Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 4240 insertions, 0 deletions

diff --git a/storage/maria/ha_maria.cc b/storage/maria/ha_maria.cc
new file mode 100644
index 00000000..5bf6754f
--- /dev/null
+++ b/storage/maria/ha_maria.cc
@@ -0,0 +1,4240 @@
+/* Copyright (C) 2004-2008 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+   Copyright (C) 2008-2009 Sun Microsystems, Inc.
+   Copyright (c) 2009, 2021, MariaDB Corporation Ab
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+
+#ifdef USE_PRAGMA_IMPLEMENTATION
+#pragma implementation                          // gcc: Class implementation
+#endif
+
+#define MYSQL_SERVER 1
+#include <my_global.h>
+#include <m_ctype.h>
+#include <my_dir.h>
+#include <myisampack.h>
+#include <my_bit.h>
+#include "ha_maria.h"
+#include "trnman_public.h"
+#include "trnman.h"
+
+C_MODE_START
+#include "maria_def.h"
+#include "ma_rt_index.h"
+#include "ma_blockrec.h"
+#include "ma_checkpoint.h"
+#include "ma_recovery.h"
+C_MODE_END
+#include "ma_trnman.h"
+
+//#include "sql_priv.h"
+#include "protocol.h"
+#include "sql_class.h"
+#include "key.h"
+#include "log.h"
+#include "sql_parse.h"
+
+/*
+  Note that in future versions, only *transactional* Maria tables can
+  rollback, so this flag should be up or down conditionally.
+*/
+#ifdef ARIA_HAS_TRANSACTIONS
+#define TRANSACTION_STATE
+#else
+#define TRANSACTION_STATE HA_NO_TRANSACTIONS
+#endif
+
+#define THD_TRN (TRN*) thd_get_ha_data(thd, maria_hton)
+
+ulong pagecache_division_limit, pagecache_age_threshold, pagecache_file_hash_size;
+ulonglong pagecache_buffer_size;
+const char *zerofill_error_msg=
+  "Table is probably from another system and must be zerofilled or repaired ('REPAIR TABLE table_name') to be usable on this system";
+
+/**
+   As the auto-repair is initiated when opened from the SQL layer
+   (open_unireg_entry(), check_and_repair()), it does not happen when Maria's
+   Recovery internally opens the table to apply log records to it, which is
+   good. It would happen only after Recovery, if the table is still
+   corrupted.
+*/
+ulonglong maria_recover_options= HA_RECOVER_NONE;
+handlerton *maria_hton;
+
+/* bits in maria_recover_options */
+const char *maria_recover_names[]=
+{
+  /*
+    Compared to MyISAM, "default" was renamed to "normal" as it collided with
+    SET var=default which sets to the var's default i.e. what happens when the
+    var is not set i.e. HA_RECOVER_NONE.
+    OFF flag is ignored.
+  */
+  "NORMAL", "BACKUP", "FORCE", "QUICK", "OFF", NullS
+};
+TYPELIB maria_recover_typelib=
+{
+  array_elements(maria_recover_names) - 1, "",
+  maria_recover_names, NULL
+};
+
+const char *maria_stats_method_names[]=
+{
+  "nulls_unequal", "nulls_equal",
+  "nulls_ignored", NullS
+};
+TYPELIB maria_stats_method_typelib=
+{
+  array_elements(maria_stats_method_names) - 1, "",
+  maria_stats_method_names, NULL
+};
+
+/* transactions log purge mode */
+const char *maria_translog_purge_type_names[]=
+{
+  "immediate", "external", "at_flush", NullS
+};
+TYPELIB maria_translog_purge_type_typelib=
+{
+  array_elements(maria_translog_purge_type_names) - 1, "",
+  maria_translog_purge_type_names, NULL
+};
+
+/* transactional log directory sync */
+const char *maria_sync_log_dir_names[]=
+{
+  "NEVER", "NEWFILE", "ALWAYS", NullS
+};
+TYPELIB maria_sync_log_dir_typelib=
+{
+  array_elements(maria_sync_log_dir_names) - 1, "",
+  maria_sync_log_dir_names, NULL
+};
+
+/* transactional log group commit */
+const char *maria_group_commit_names[]=
+{
+  "none", "hard", "soft", NullS
+};
+TYPELIB maria_group_commit_typelib=
+{
+  array_elements(maria_group_commit_names) - 1, "",
+  maria_group_commit_names, NULL
+};
+
+/** Interval between background checkpoints in seconds */
+static ulong checkpoint_interval;
+static void update_checkpoint_interval(MYSQL_THD thd,
+                                       struct st_mysql_sys_var *var,
+                                       void *var_ptr, const void *save);
+static void update_maria_group_commit(MYSQL_THD thd,
+                                      struct st_mysql_sys_var *var,
+                                      void *var_ptr, const void *save);
+static void update_maria_group_commit_interval(MYSQL_THD thd,
+                                           struct st_mysql_sys_var *var,
+                                           void *var_ptr, const void *save);
+/** After that many consecutive recovery failures, remove logs */
+static ulong force_start_after_recovery_failures;
+static void update_log_file_size(MYSQL_THD thd,
+                                 struct st_mysql_sys_var *var,
+                                 void *var_ptr, const void *save);
+
+/* The 4096 is there because of MariaDB privilege tables */
+static MYSQL_SYSVAR_ULONG(block_size, maria_block_size,
+       PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
+       "Block size to be used for Aria index pages.", 0, 0,
+       MARIA_KEY_BLOCK_LENGTH, 4096,
+       MARIA_MAX_KEY_BLOCK_LENGTH, MARIA_MIN_KEY_BLOCK_LENGTH);
+
+static MYSQL_SYSVAR_ULONG(checkpoint_interval, checkpoint_interval,
+       PLUGIN_VAR_RQCMDARG,
+       "Interval between tries to do an automatic checkpoints. In seconds; 0 means"
+       " 'no automatic checkpoints' which makes sense only for testing.",
+       NULL, update_checkpoint_interval, 30, 0, UINT_MAX, 1);
+
+static MYSQL_SYSVAR_ULONG(checkpoint_log_activity, maria_checkpoint_min_log_activity,
+       PLUGIN_VAR_RQCMDARG,
+       "Number of bytes that the transaction log has to grow between checkpoints before a new "
+       "checkpoint is written to the log.",
+       NULL, NULL, 1024*1024, 0, UINT_MAX, 1);
+
+static MYSQL_SYSVAR_ULONG(force_start_after_recovery_failures,
+       force_start_after_recovery_failures,
+       /*
+         Read-only because setting it on the fly has no useful effect,
+         should be set on command-line.
+       */
+       PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
+       "Number of consecutive log recovery failures after which logs will be"
+       " automatically deleted to cure the problem; 0 (the default) disables"
+       " the feature.", NULL, NULL, 0, 0, UINT_MAX8, 1);
+
+static MYSQL_SYSVAR_BOOL(page_checksum, maria_page_checksums, 0,
+       "Maintain page checksums (can be overridden per table "
+       "with PAGE_CHECKSUM clause in CREATE TABLE)", 0, 0, 1);
+
+/* It is only command line argument */
+static MYSQL_SYSVAR_CONST_STR(log_dir_path, maria_data_root,
+       PLUGIN_VAR_NOSYSVAR | PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
+       "Path to the directory where to store transactional log",
+       NULL, NULL, mysql_real_data_home);
+
+static MYSQL_SYSVAR_ULONG(log_file_size, log_file_size,
+       PLUGIN_VAR_RQCMDARG,
+       "Limit for transaction log size",
+       NULL, update_log_file_size, TRANSLOG_FILE_SIZE,
+       TRANSLOG_MIN_FILE_SIZE, 0xffffffffL, TRANSLOG_PAGE_SIZE);
+
+static MYSQL_SYSVAR_ENUM(group_commit, maria_group_commit,
+       PLUGIN_VAR_RQCMDARG,
+       "Specifies Aria group commit mode. "
+       "Possible values are \"none\" (no group commit), "
+       "\"hard\" (with waiting to actual commit), "
+       "\"soft\" (no wait for commit (DANGEROUS!!!))",
+       NULL, update_maria_group_commit,
+       TRANSLOG_GCOMMIT_NONE, &maria_group_commit_typelib);
+
+static MYSQL_SYSVAR_ULONG(group_commit_interval, maria_group_commit_interval,
+       PLUGIN_VAR_RQCMDARG,
+       "Interval between commits in microseconds (1/1000000 sec)."
+       " 0 stands for no waiting"
+       " for other threads to come and do a commit in \"hard\" mode and no"
+       " sync()/commit at all in \"soft\" mode.  Option has only an effect"
+       " if aria_group_commit is used",
+       NULL, update_maria_group_commit_interval, 0, 0, UINT_MAX, 1);
+
+static MYSQL_SYSVAR_ENUM(log_purge_type, log_purge_type,
+       PLUGIN_VAR_RQCMDARG,
+       "Specifies how Aria transactional log will be purged",
+       NULL, NULL, TRANSLOG_PURGE_IMMIDIATE,
+       &maria_translog_purge_type_typelib);
+
+static MYSQL_SYSVAR_ULONGLONG(max_sort_file_size,
+       maria_max_temp_length, PLUGIN_VAR_RQCMDARG,
+       "Don't use the fast sort index method to created index if the "
+       "temporary file would get bigger than this.",
+       0, 0, MAX_FILE_SIZE & ~((ulonglong) (1*MB-1)),
+       0, MAX_FILE_SIZE, 1*MB);
+
+static MYSQL_SYSVAR_ULONG(pagecache_age_threshold,
+       pagecache_age_threshold, PLUGIN_VAR_RQCMDARG,
+       "This characterizes the number of hits a hot block has to be untouched "
+       "until it is considered aged enough to be downgraded to a warm block. "
+       "This specifies the percentage ratio of that number of hits to the "
+       "total number of blocks in the page cache.", 0, 0,
+       300, 100, ~ (ulong) 0L, 100);
+
+static MYSQL_SYSVAR_ULONGLONG(pagecache_buffer_size, pagecache_buffer_size,
+       PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
+       "The size of the buffer used for index blocks for Aria tables. "
+       "Increase this to get better index handling (for all reads and "
+       "multiple writes) to as much as you can afford.", 0, 0,
+       KEY_CACHE_SIZE, 8192*16L, ~(ulonglong) 0, 1);
+
+static MYSQL_SYSVAR_ULONG(pagecache_division_limit, pagecache_division_limit,
+       PLUGIN_VAR_RQCMDARG,
+       "The minimum percentage of warm blocks in key cache", 0, 0,
+       100,  1, 100, 1);
+
+static MYSQL_SYSVAR_ULONG(pagecache_file_hash_size, pagecache_file_hash_size,
+       PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
+       "Number of hash buckets for open and changed files.  If you have a lot of Aria "
+       "files open you should increase this for faster flush of changes. A good "
+       "value is probably 1/10 of number of possible open Aria files.", 0,0,
+       512, 128, 16384, 1);
+
+static MYSQL_SYSVAR_SET(recover_options, maria_recover_options, PLUGIN_VAR_OPCMDARG,
+       "Specifies how corrupted tables should be automatically repaired",
+       NULL, NULL, HA_RECOVER_BACKUP|HA_RECOVER_QUICK, &maria_recover_typelib);
+
+static MYSQL_THDVAR_ULONG(repair_threads, PLUGIN_VAR_RQCMDARG,
+       "Number of threads to use when repairing Aria tables. The value of 1 "
+       "disables parallel repair.",
+       0, 0, 1, 1, 128, 1);
+
+static MYSQL_THDVAR_ULONGLONG(sort_buffer_size, PLUGIN_VAR_RQCMDARG,
+       "The buffer that is allocated when sorting the index when doing a "
+       "REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE.",
+       NULL, NULL,
+       SORT_BUFFER_INIT, MIN_SORT_BUFFER, SIZE_T_MAX/2, 1);
+
+static MYSQL_THDVAR_ENUM(stats_method, PLUGIN_VAR_RQCMDARG,
+       "Specifies how Aria index statistics collection code should treat "
+       "NULLs", 0, 0, 0, &maria_stats_method_typelib);
+
+static MYSQL_SYSVAR_ENUM(sync_log_dir, sync_log_dir, PLUGIN_VAR_RQCMDARG,
+       "Controls syncing directory after log file growth and new file "
+       "creation", NULL, NULL, TRANSLOG_SYNC_DIR_NEWFILE,
+       &maria_sync_log_dir_typelib);
+
+#ifdef USE_ARIA_FOR_TMP_TABLES
+#define USE_ARIA_FOR_TMP_TABLES_VAL 1
+#else
+#define USE_ARIA_FOR_TMP_TABLES_VAL 0
+#endif
+my_bool use_maria_for_temp_tables= USE_ARIA_FOR_TMP_TABLES_VAL;
+
+static MYSQL_SYSVAR_BOOL(used_for_temp_tables,
+       use_maria_for_temp_tables, PLUGIN_VAR_READONLY | PLUGIN_VAR_NOCMDOPT,
+       "Whether temporary tables should be MyISAM or Aria", 0, 0,
+       1);
+
+static MYSQL_SYSVAR_BOOL(encrypt_tables, maria_encrypt_tables, PLUGIN_VAR_OPCMDARG,
+       "Encrypt tables (only for tables with ROW_FORMAT=PAGE (default) "
+       "and not FIXED/DYNAMIC)",
+       0, 0, 0);
+
+#if defined HAVE_PSI_INTERFACE && !defined EMBEDDED_LIBRARY
+
+static PSI_mutex_info all_aria_mutexes[]=
+{
+  { &key_THR_LOCK_maria, "THR_LOCK_maria", PSI_FLAG_GLOBAL},
+  { &key_LOCK_soft_sync, "LOCK_soft_sync", PSI_FLAG_GLOBAL},
+  { &key_LOCK_trn_list, "LOCK_trn_list", PSI_FLAG_GLOBAL},
+  { &key_SHARE_BITMAP_lock, "SHARE::bitmap::bitmap_lock", 0},
+  { &key_SORT_INFO_mutex, "SORT_INFO::mutex", 0},
+  { &key_TRANSLOG_BUFFER_mutex, "TRANSLOG_BUFFER::mutex", 0},
+  { &key_TRANSLOG_DESCRIPTOR_dirty_buffer_mask_lock, "TRANSLOG_DESCRIPTOR::dirty_buffer_mask_lock", 0},
+  { &key_TRANSLOG_DESCRIPTOR_sent_to_disk_lock, "TRANSLOG_DESCRIPTOR::sent_to_disk_lock", 0},
+  { &key_TRANSLOG_DESCRIPTOR_log_flush_lock, "TRANSLOG_DESCRIPTOR::log_flush_lock", 0},
+  { &key_TRANSLOG_DESCRIPTOR_file_header_lock, "TRANSLOG_DESCRIPTOR::file_header_lock", 0},
+  { &key_TRANSLOG_DESCRIPTOR_unfinished_files_lock, "TRANSLOG_DESCRIPTOR::unfinished_files_lock", 0},
+  { &key_TRANSLOG_DESCRIPTOR_purger_lock, "TRANSLOG_DESCRIPTOR::purger_lock", 0},
+  { &key_SHARE_intern_lock, "SHARE::intern_lock", 0},
+  { &key_SHARE_key_del_lock, "SHARE::key_del_lock", 0},
+  { &key_SHARE_close_lock, "SHARE::close_lock", 0},
+  { &key_SERVICE_THREAD_CONTROL_lock, "SERVICE_THREAD_CONTROL::LOCK_control", 0},
+  { &key_TRN_state_lock, "TRN::state_lock", 0},
+  { &key_PAGECACHE_cache_lock, "PAGECACHE::cache_lock", 0}
+};
+
+static PSI_cond_info all_aria_conds[]=
+{
+  { &key_COND_soft_sync, "COND_soft_sync", PSI_FLAG_GLOBAL},
+  { &key_SHARE_key_del_cond, "SHARE::key_del_cond", 0},
+  { &key_SERVICE_THREAD_CONTROL_cond, "SERVICE_THREAD_CONTROL::COND_control", 0},
+  { &key_SORT_INFO_cond, "SORT_INFO::cond", 0},
+  { &key_SHARE_BITMAP_cond, "BITMAP::bitmap_cond", 0},
+  { &key_TRANSLOG_BUFFER_waiting_filling_buffer, "TRANSLOG_BUFFER::waiting_filling_buffer", 0},
+  { &key_TRANSLOG_BUFFER_prev_sent_to_disk_cond, "TRANSLOG_BUFFER::prev_sent_to_disk_cond", 0},
+  { &key_TRANSLOG_DESCRIPTOR_log_flush_cond, "TRANSLOG_DESCRIPTOR::log_flush_cond", 0},
+  { &key_TRANSLOG_DESCRIPTOR_new_goal_cond, "TRANSLOG_DESCRIPTOR::new_goal_cond", 0}
+};
+
+static PSI_rwlock_info all_aria_rwlocks[]=
+{
+  { &key_KEYINFO_root_lock, "KEYINFO::root_lock", 0},
+  { &key_SHARE_mmap_lock, "SHARE::mmap_lock", 0},
+  { &key_TRANSLOG_DESCRIPTOR_open_files_lock, "TRANSLOG_DESCRIPTOR::open_files_lock", 0}
+};
+
+static PSI_thread_info all_aria_threads[]=
+{
+  { &key_thread_checkpoint, "checkpoint_background", PSI_FLAG_GLOBAL},
+  { &key_thread_soft_sync, "soft_sync_background", PSI_FLAG_GLOBAL},
+  { &key_thread_find_all_keys, "thr_find_all_keys", 0}
+};
+
+static PSI_file_info all_aria_files[]=
+{
+  { &key_file_translog, "translog", 0},
+  { &key_file_kfile, "MAI", 0},
+  { &key_file_dfile, "MAD", 0},
+  { &key_file_control, "control", PSI_FLAG_GLOBAL}
+};
+
+# ifdef HAVE_PSI_STAGE_INTERFACE
+static PSI_stage_info *all_aria_stages[]=
+{
+  & stage_waiting_for_a_resource
+};
+# endif /* HAVE_PSI_STAGE_INTERFACE */
+
+static void init_aria_psi_keys(void)
+{
+  const char* category= "aria";
+  int count;
+
+  count= array_elements(all_aria_mutexes);
+  mysql_mutex_register(category, all_aria_mutexes, count);
+
+  count= array_elements(all_aria_rwlocks);
+  mysql_rwlock_register(category, all_aria_rwlocks, count);
+
+  count= array_elements(all_aria_conds);
+  mysql_cond_register(category, all_aria_conds, count);
+
+  count= array_elements(all_aria_threads);
+  mysql_thread_register(category, all_aria_threads, count);
+
+  count= array_elements(all_aria_files);
+  mysql_file_register(category, all_aria_files, count);
+# ifdef HAVE_PSI_STAGE_INTERFACE
+  count= array_elements(all_aria_stages);
+  mysql_stage_register(category, all_aria_stages, count);
+# endif /* HAVE_PSI_STAGE_INTERFACE */
+}
+#else
+#define init_aria_psi_keys() /* no-op */
+#endif /* HAVE_PSI_INTERFACE */
+
+const char *MA_CHECK_INFO= "info";
+const char *MA_CHECK_WARNING= "warning";
+const char *MA_CHECK_ERROR= "error";
+
+/*****************************************************************************
+** MARIA tables
+*****************************************************************************/
+
+static handler *maria_create_handler(handlerton *hton,
+                                     TABLE_SHARE * table,
+                                     MEM_ROOT *mem_root)
+{
+  return new (mem_root) ha_maria(hton, table);
+}
+
+
+static void _ma_check_print(HA_CHECK *param, const char* msg_type,
+                            const char *msgbuf)
+{
+  if (msg_type == MA_CHECK_INFO)
+    sql_print_information("%s.%s: %s", param->db_name, param->table_name,
+                          msgbuf);
+  else if (msg_type == MA_CHECK_WARNING)
+    sql_print_warning("%s.%s: %s", param->db_name, param->table_name,
+                      msgbuf);
+  else
+    sql_print_error("%s.%s: %s", param->db_name, param->table_name, msgbuf);
+}
+
+
+// collect errors printed by maria_check routines
+
+static void _ma_check_print_msg(HA_CHECK *param, const char *msg_type,
+                                const char *fmt, va_list args)
+{
+  THD *thd= (THD *) param->thd;
+  Protocol *protocol= thd->protocol;
+  size_t length, msg_length;
+  char msgbuf[MYSQL_ERRMSG_SIZE];
+  char name[NAME_LEN * 2 + 2];
+
+  if (param->testflag & T_SUPPRESS_ERR_HANDLING)
+    return;
+
+  msg_length= my_vsnprintf(msgbuf, sizeof(msgbuf), fmt, args);
+  msgbuf[sizeof(msgbuf) - 1]= 0;                // healthy paranoia
+
+  DBUG_PRINT(msg_type, ("message: %s", msgbuf));
+
+  if (!thd->vio_ok())
+  {
+    _ma_check_print(param, msg_type, msgbuf);
+    return;
+  }
+
+  if (param->testflag &
+      (T_CREATE_MISSING_KEYS | T_SAFE_REPAIR | T_AUTO_REPAIR))
+  {
+    myf flag= 0;
+    if (msg_type == MA_CHECK_INFO)
+      flag= ME_NOTE;
+    else if (msg_type == MA_CHECK_WARNING)
+      flag= ME_WARNING;
+    my_message(ER_NOT_KEYFILE, msgbuf, MYF(flag));
+    if (thd->variables.log_warnings > 2)
+      _ma_check_print(param, msg_type, msgbuf);
+    return;
+  }
+  length= (uint) (strxmov(name, param->db_name, ".", param->table_name,
+                          NullS) - name);
+  /*
+    TODO: switch from protocol to push_warning here. The main reason we didn't
+    it yet is parallel repair, which threads have no THD object accessible via
+    current_thd.
+
+    Also we likely need to lock mutex here (in both cases with protocol and
+    push_warning).
+  */
+  protocol->prepare_for_resend();
+  protocol->store(name, (uint)length, system_charset_info);
+  protocol->store(param->op_name, system_charset_info);
+  protocol->store(msg_type, system_charset_info);
+  protocol->store(msgbuf, (uint)msg_length, system_charset_info);
+  if (protocol->write())
+    sql_print_error("Failed on my_net_write, writing to stderr instead: %s.%s: %s\n",
+                    param->db_name, param->table_name, msgbuf);
+  else if (thd->variables.log_warnings > 2)
+    _ma_check_print(param, msg_type, msgbuf);
+
+  return;
+}
+
+
+/*
+  Convert TABLE object to Maria key and column definition
+
+  SYNOPSIS
+    table2maria()
+      table_arg   in     TABLE object.
+      keydef_out  out    Maria key definition.
+      recinfo_out out    Maria column definition.
+      records_out out    Number of fields.
+
+  DESCRIPTION
+    This function will allocate and initialize Maria key and column
+    definition for further use in ma_create or for a check for underlying
+    table conformance in merge engine.
+
+    The caller needs to free *recinfo_out after use. Since *recinfo_out
+    and *keydef_out are allocated with a my_multi_malloc, *keydef_out
+    is freed automatically when *recinfo_out is freed.
+
+  RETURN VALUE
+    0  OK
+    # error code
+*/
+
+static int table2maria(TABLE *table_arg, data_file_type row_type,
+                       MARIA_KEYDEF **keydef_out,
+                       MARIA_COLUMNDEF **recinfo_out, uint *records_out,
+                       MARIA_CREATE_INFO *create_info)
+{
+  uint i, j, recpos, minpos, fieldpos, temp_length, length;
+  enum ha_base_keytype type= HA_KEYTYPE_BINARY;
+  uchar *record;
+  KEY *pos;
+  MARIA_KEYDEF *keydef;
+  MARIA_COLUMNDEF *recinfo, *recinfo_pos;
+  HA_KEYSEG *keyseg;
+  TABLE_SHARE *share= table_arg->s;
+  uint options= share->db_options_in_use;
+  DBUG_ENTER("table2maria");
+
+  if (row_type == BLOCK_RECORD)
+    options|= HA_OPTION_PACK_RECORD;
+
+  if (!(my_multi_malloc(PSI_INSTRUMENT_ME, MYF(MY_WME),
+          recinfo_out, (share->fields * 2 + 2) * sizeof(MARIA_COLUMNDEF),
+          keydef_out, share->keys * sizeof(MARIA_KEYDEF),
+          &keyseg,
+          (share->key_parts + share->keys) * sizeof(HA_KEYSEG),
+          NullS)))
+    DBUG_RETURN(HA_ERR_OUT_OF_MEM); /* purecov: inspected */
+  keydef= *keydef_out;
+  recinfo= *recinfo_out;
+  pos= table_arg->key_info;
+  for (i= 0; i < share->keys; i++, pos++)
+  {
+    keydef[i].flag= (uint16) (pos->flags & (HA_NOSAME | HA_FULLTEXT |
+                                            HA_SPATIAL));
+    keydef[i].key_alg= pos->algorithm == HA_KEY_ALG_UNDEF ?
+      (pos->flags & HA_SPATIAL ? HA_KEY_ALG_RTREE : HA_KEY_ALG_BTREE) :
+      pos->algorithm;
+    keydef[i].block_length= pos->block_size;
+    keydef[i].seg= keyseg;
+    keydef[i].keysegs= pos->user_defined_key_parts;
+    for (j= 0; j < pos->user_defined_key_parts; j++)
+    {
+      Field *field= pos->key_part[j].field;
+
+      if (!table_arg->field[field->field_index]->stored_in_db())
+      {
+        my_free(*recinfo_out);
+        if (table_arg->s->long_unique_table)
+        {
+          my_error(ER_TOO_LONG_KEY, MYF(0), table_arg->file->max_key_length());
+          DBUG_RETURN(HA_ERR_INDEX_COL_TOO_LONG);
+        }
+        my_error(ER_KEY_BASED_ON_GENERATED_VIRTUAL_COLUMN, MYF(0));
+        DBUG_RETURN(HA_ERR_UNSUPPORTED);
+      }
+
+      type= field->key_type();
+      keydef[i].seg[j].flag= pos->key_part[j].key_part_flag;
+
+      if (options & HA_OPTION_PACK_KEYS ||
+          (pos->flags & (HA_PACK_KEY | HA_BINARY_PACK_KEY |
+                         HA_SPACE_PACK_USED)))
+      {
+        if (pos->key_part[j].length > 8 &&
+            (type == HA_KEYTYPE_TEXT ||
+             type == HA_KEYTYPE_NUM ||
+             (type == HA_KEYTYPE_BINARY && !field->zero_pack())))
+        {
+          /* No blobs here */
+          if (j == 0)
+            keydef[i].flag|= HA_PACK_KEY;
+          if (!(field->flags & ZEROFILL_FLAG) &&
+              (field->type() == MYSQL_TYPE_STRING ||
+               field->type() == MYSQL_TYPE_VAR_STRING ||
+               ((int) (pos->key_part[j].length - field->decimals())) >= 4))
+            keydef[i].seg[j].flag|= HA_SPACE_PACK;
+        }
+        else if (j == 0 && (!(pos->flags & HA_NOSAME) || pos->key_length > 16))
+          keydef[i].flag|= HA_BINARY_PACK_KEY;
+      }
+      keydef[i].seg[j].type= (int) type;
+      keydef[i].seg[j].start= pos->key_part[j].offset;
+      keydef[i].seg[j].length= pos->key_part[j].length;
+      keydef[i].seg[j].bit_start= keydef[i].seg[j].bit_length= 0;
+      keydef[i].seg[j].bit_pos= 0;
+      keydef[i].seg[j].language= field->charset()->number;
+
+      if (field->null_ptr)
+      {
+        keydef[i].seg[j].null_bit= field->null_bit;
+        keydef[i].seg[j].null_pos= (uint) (field->null_ptr-
+                                           (uchar*) table_arg->record[0]);
+      }
+      else
+      {
+        keydef[i].seg[j].null_bit= 0;
+        keydef[i].seg[j].null_pos= 0;
+      }
+      if (field->type() == MYSQL_TYPE_BLOB ||
+          field->type() == MYSQL_TYPE_GEOMETRY)
+      {
+        keydef[i].seg[j].flag|= HA_BLOB_PART;
+        /* save number of bytes used to pack length */
+        keydef[i].seg[j].bit_start= (uint) (field->pack_length() -
+                                            portable_sizeof_char_ptr);
+      }
+      else if (field->type() == MYSQL_TYPE_BIT)
+      {
+        keydef[i].seg[j].bit_length= ((Field_bit *) field)->bit_len;
+        keydef[i].seg[j].bit_start= ((Field_bit *) field)->bit_ofs;
+        keydef[i].seg[j].bit_pos= (uint) (((Field_bit *) field)->bit_ptr -
+                                          (uchar*) table_arg->record[0]);
+      }
+    }
+    keyseg+= pos->user_defined_key_parts;
+  }
+  if (table_arg->found_next_number_field)
+    keydef[share->next_number_index].flag|= HA_AUTO_KEY;
+  record= table_arg->record[0];
+  recpos= 0;
+  recinfo_pos= recinfo;
+  create_info->null_bytes= table_arg->s->null_bytes;
+
+  while (recpos < (uint) share->stored_rec_length)
+  {
+    Field **field, *found= 0;
+    minpos= share->reclength;
+    length= 0;
+
+    for (field= table_arg->field; *field; field++)
+    {
+      if ((fieldpos= (*field)->offset(record)) >= recpos &&
+          fieldpos <= minpos)
+      {
+        /* skip null fields */
+        if (!(temp_length= (*field)->pack_length_in_rec()))
+          continue; /* Skip null-fields */
+        if (! found || fieldpos < minpos ||
+            (fieldpos == minpos && temp_length < length))
+        {
+          minpos= fieldpos;
+          found= *field;
+          length= temp_length;
+        }
+      }
+    }
+    DBUG_PRINT("loop", ("found: %p  recpos: %d  minpos: %d  length: %d",
+                        found, recpos, minpos, length));
+    if (!found)
+      break;
+
+    if (found->flags & BLOB_FLAG)
+      recinfo_pos->type= FIELD_BLOB;
+    else if (found->type() == MYSQL_TYPE_TIMESTAMP)
+      recinfo_pos->type= FIELD_NORMAL;
+    else if (found->type() == MYSQL_TYPE_VARCHAR)
+      recinfo_pos->type= FIELD_VARCHAR;
+    else if (!(options & HA_OPTION_PACK_RECORD) ||
+             (found->zero_pack() && (found->flags & PRI_KEY_FLAG)))
+      recinfo_pos->type= FIELD_NORMAL;
+    else if (found->zero_pack())
+      recinfo_pos->type= FIELD_SKIP_ZERO;
+    else
+      recinfo_pos->type= ((length <= 3 ||
+                           (found->flags & ZEROFILL_FLAG)) ?
+                          FIELD_NORMAL :
+                          found->type() == MYSQL_TYPE_STRING ||
+                          found->type() == MYSQL_TYPE_VAR_STRING ?
+                          FIELD_SKIP_ENDSPACE :
+                          FIELD_SKIP_PRESPACE);
+    if (found->null_ptr)
+    {
+      recinfo_pos->null_bit= found->null_bit;
+      recinfo_pos->null_pos= (uint) (found->null_ptr -
+                                     (uchar*) table_arg->record[0]);
+    }
+    else
+    {
+      recinfo_pos->null_bit= 0;
+      recinfo_pos->null_pos= 0;
+    }
+    (recinfo_pos++)->length= (uint16) length;
+    recpos= minpos + length;
+    DBUG_PRINT("loop", ("length: %d  type: %d",
+                        recinfo_pos[-1].length,recinfo_pos[-1].type));
+  }
+  *records_out= (uint) (recinfo_pos - recinfo);
+  DBUG_RETURN(0);
+}
+
+
+/*
+  Check for underlying table conformance
+
+  SYNOPSIS
+    maria_check_definition()
+      t1_keyinfo       in    First table key definition
+      t1_recinfo       in    First table record definition
+      t1_keys          in    Number of keys in first table
+      t1_recs          in    Number of records in first table
+      t2_keyinfo       in    Second table key definition
+      t2_recinfo       in    Second table record definition
+      t2_keys          in    Number of keys in second table
+      t2_recs          in    Number of records in second table
+      strict           in    Strict check switch
+
+  DESCRIPTION
+    This function compares two Maria definitions. By intention it was done
+    to compare merge table definition against underlying table definition.
+    It may also be used to compare dot-frm and MAI definitions of Maria
+    table as well to compare different Maria table definitions.
+
+    For merge table it is not required that number of keys in merge table
+    must exactly match number of keys in underlying table. When calling this
+    function for underlying table conformance check, 'strict' flag must be
+    set to false, and converted merge definition must be passed as t1_*.
+
+    Otherwise 'strict' flag must be set to 1 and it is not required to pass
+    converted dot-frm definition as t1_*.
+
+  RETURN VALUE
+    0 - Equal definitions.
+    1 - Different definitions.
+
+  TODO
+    - compare FULLTEXT keys;
+    - compare SPATIAL keys;
+    - compare FIELD_SKIP_ZERO which is converted to FIELD_NORMAL correctly
+      (should be correctly detected in table2maria).
+*/
+
+int maria_check_definition(MARIA_KEYDEF *t1_keyinfo,
+                           MARIA_COLUMNDEF *t1_recinfo,
+                           uint t1_keys, uint t1_recs,
+                           MARIA_KEYDEF *t2_keyinfo,
+                           MARIA_COLUMNDEF *t2_recinfo,
+                           uint t2_keys, uint t2_recs, bool strict)
+{
+  uint i, j;
+  DBUG_ENTER("maria_check_definition");
+  if ((strict ? t1_keys != t2_keys : t1_keys > t2_keys))
+  {
+    DBUG_PRINT("error", ("Number of keys differs: t1_keys=%u, t2_keys=%u",
+                         t1_keys, t2_keys));
+    DBUG_RETURN(1);
+  }
+  if (t1_recs != t2_recs)
+  {
+    DBUG_PRINT("error", ("Number of recs differs: t1_recs=%u, t2_recs=%u",
+                         t1_recs, t2_recs));
+    DBUG_RETURN(1);
+  }
+  for (i= 0; i < t1_keys; i++)
+  {
+    HA_KEYSEG *t1_keysegs= t1_keyinfo[i].seg;
+    HA_KEYSEG *t2_keysegs= t2_keyinfo[i].seg;
+    if (t1_keyinfo[i].flag & HA_FULLTEXT && t2_keyinfo[i].flag & HA_FULLTEXT)
+      continue;
+    else if (t1_keyinfo[i].flag & HA_FULLTEXT ||
+             t2_keyinfo[i].flag & HA_FULLTEXT)
+    {
+       DBUG_PRINT("error", ("Key %d has different definition", i));
+       DBUG_PRINT("error", ("t1_fulltext= %d, t2_fulltext=%d",
+                            MY_TEST(t1_keyinfo[i].flag & HA_FULLTEXT),
+                            MY_TEST(t2_keyinfo[i].flag & HA_FULLTEXT)));
+       DBUG_RETURN(1);
+    }
+    if (t1_keyinfo[i].flag & HA_SPATIAL && t2_keyinfo[i].flag & HA_SPATIAL)
+      continue;
+    else if (t1_keyinfo[i].flag & HA_SPATIAL ||
+             t2_keyinfo[i].flag & HA_SPATIAL)
+    {
+       DBUG_PRINT("error", ("Key %d has different definition", i));
+       DBUG_PRINT("error", ("t1_spatial= %d, t2_spatial=%d",
+                            MY_TEST(t1_keyinfo[i].flag & HA_SPATIAL),
+                            MY_TEST(t2_keyinfo[i].flag & HA_SPATIAL)));
+       DBUG_RETURN(1);
+    }
+    if (t1_keyinfo[i].keysegs != t2_keyinfo[i].keysegs ||
+        t1_keyinfo[i].key_alg != t2_keyinfo[i].key_alg)
+    {
+      DBUG_PRINT("error", ("Key %d has different definition", i));
+      DBUG_PRINT("error", ("t1_keysegs=%d, t1_key_alg=%d",
+                           t1_keyinfo[i].keysegs, t1_keyinfo[i].key_alg));
+      DBUG_PRINT("error", ("t2_keysegs=%d, t2_key_alg=%d",
+                           t2_keyinfo[i].keysegs, t2_keyinfo[i].key_alg));
+      DBUG_RETURN(1);
+    }
+    for (j=  t1_keyinfo[i].keysegs; j--;)
+    {
+      uint8 t1_keysegs_j__type= t1_keysegs[j].type;
+      /*
+        Table migration from 4.1 to 5.1. In 5.1 a *TEXT key part is
+        always HA_KEYTYPE_VARTEXT2. In 4.1 we had only the equivalent of
+        HA_KEYTYPE_VARTEXT1. Since we treat both the same on MyISAM
+        level, we can ignore a mismatch between these types.
+      */
+      if ((t1_keysegs[j].flag & HA_BLOB_PART) &&
+          (t2_keysegs[j].flag & HA_BLOB_PART))
+      {
+        if ((t1_keysegs_j__type == HA_KEYTYPE_VARTEXT2) &&
+            (t2_keysegs[j].type == HA_KEYTYPE_VARTEXT1))
+          t1_keysegs_j__type= HA_KEYTYPE_VARTEXT1; /* purecov: tested */
+        else if ((t1_keysegs_j__type == HA_KEYTYPE_VARBINARY2) &&
+                 (t2_keysegs[j].type == HA_KEYTYPE_VARBINARY1))
+          t1_keysegs_j__type= HA_KEYTYPE_VARBINARY1; /* purecov: inspected */
+      }
+
+      if (t1_keysegs_j__type != t2_keysegs[j].type ||
+          t1_keysegs[j].language != t2_keysegs[j].language ||
+          t1_keysegs[j].null_bit != t2_keysegs[j].null_bit ||
+          t1_keysegs[j].length != t2_keysegs[j].length)
+      {
+        DBUG_PRINT("error", ("Key segment %d (key %d) has different "
+                             "definition", j, i));
+        DBUG_PRINT("error", ("t1_type=%d, t1_language=%d, t1_null_bit=%d, "
+                             "t1_length=%d",
+                             t1_keysegs[j].type, t1_keysegs[j].language,
+                             t1_keysegs[j].null_bit, t1_keysegs[j].length));
+        DBUG_PRINT("error", ("t2_type=%d, t2_language=%d, t2_null_bit=%d, "
+                             "t2_length=%d",
+                             t2_keysegs[j].type, t2_keysegs[j].language,
+                             t2_keysegs[j].null_bit, t2_keysegs[j].length));
+
+        DBUG_RETURN(1);
+      }
+    }
+  }
+
+  for (i= 0; i < t1_recs; i++)
+  {
+    MARIA_COLUMNDEF *t1_rec= &t1_recinfo[i];
+    MARIA_COLUMNDEF *t2_rec= &t2_recinfo[i];
+    /*
+      FIELD_SKIP_ZERO can be changed to FIELD_NORMAL in maria_create,
+      see NOTE1 in ma_create.c
+    */
+    if ((t1_rec->type != t2_rec->type &&
+         !(t1_rec->type == (int) FIELD_SKIP_ZERO &&
+           t1_rec->length == 1 &&
+           t2_rec->type == (int) FIELD_NORMAL)) ||
+        t1_rec->length != t2_rec->length ||
+        t1_rec->null_bit != t2_rec->null_bit)
+    {
+      DBUG_PRINT("error", ("Field %d has different definition", i));
+      DBUG_PRINT("error", ("t1_type=%d, t1_length=%d, t1_null_bit=%d",
+                           t1_rec->type, t1_rec->length, t1_rec->null_bit));
+      DBUG_PRINT("error", ("t2_type=%d, t2_length=%d, t2_null_bit=%d",
+                           t2_rec->type, t2_rec->length, t2_rec->null_bit));
+      DBUG_RETURN(1);
+    }
+  }
+  DBUG_RETURN(0);
+}
+
+
+extern "C" {
+
+int _ma_killed_ptr(HA_CHECK *param)
+{
+  if (likely(thd_killed((THD*)param->thd)) == 0)
+    return 0;
+  my_errno= HA_ERR_ABORTED_BY_USER;
+  return 1;
+}
+
+
+/*
+  Report progress to mysqld
+
+  This is a bit more complex than what a normal progress report
+  function normally is.
+
+  The reason is that this is called by enable_index/repair which
+  is one stage in ALTER TABLE and we can't use the external
+  stage/max_stage for this.
+
+  thd_progress_init/thd_progress_next_stage is to be called by
+  high level commands like CHECK TABLE or REPAIR TABLE, not
+  by sub commands like enable_index().
+
+  In ma_check.c it's easier to work with stages than with a total
+  progress, so we use internal stage/max_stage here to keep the
+  code simple.
+*/
+
+void _ma_report_progress(HA_CHECK *param, ulonglong progress,
+                         ulonglong max_progress)
+{
+  thd_progress_report((THD*)param->thd,
+                      progress + max_progress * param->stage,
+                      max_progress * param->max_stage);
+}
+
+
+void _ma_check_print_error(HA_CHECK *param, const char *fmt, ...)
+{
+  va_list args;
+  DBUG_ENTER("_ma_check_print_error");
+  param->error_printed++;
+  param->out_flag |= O_DATA_LOST;
+  if (param->testflag & T_SUPPRESS_ERR_HANDLING)
+    DBUG_VOID_RETURN;
+  va_start(args, fmt);
+  _ma_check_print_msg(param, MA_CHECK_ERROR, fmt, args);
+  va_end(args);
+  DBUG_VOID_RETURN;
+}
+
+
+void _ma_check_print_info(HA_CHECK *param, const char *fmt, ...)
+{
+  va_list args;
+  DBUG_ENTER("_ma_check_print_info");
+  va_start(args, fmt);
+  _ma_check_print_msg(param, MA_CHECK_INFO, fmt, args);
+  va_end(args);
+  DBUG_VOID_RETURN;
+}
+
+
+void _ma_check_print_warning(HA_CHECK *param, const char *fmt, ...)
+{
+  va_list args;
+  DBUG_ENTER("_ma_check_print_warning");
+  param->warning_printed++;
+  param->out_flag |= O_DATA_LOST;
+  va_start(args, fmt);
+  _ma_check_print_msg(param, MA_CHECK_WARNING, fmt, args);
+  va_end(args);
+  DBUG_VOID_RETURN;
+}
+
+/*
+  Create a transaction object
+
+  SYNOPSIS
+    info	Maria handler
+
+  RETURN
+    0 		ok
+    #		Error number (HA_ERR_OUT_OF_MEM)
+*/
+
+static int maria_create_trn_for_mysql(MARIA_HA *info)
+{
+  THD *thd= ((TABLE*) info->external_ref)->in_use;
+  TRN *trn= THD_TRN;
+  DBUG_ENTER("maria_create_trn_for_mysql");
+
+  if (!trn)  /* no transaction yet - open it now */
+  {
+    trn= trnman_new_trn(& thd->transaction->wt);
+    if (unlikely(!trn))
+      DBUG_RETURN(HA_ERR_OUT_OF_MEM);
+    thd_set_ha_data(thd, maria_hton, trn);
+    if (thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN))
+      trans_register_ha(thd, TRUE, maria_hton, trn->trid);
+  }
+  _ma_set_trn_for_table(info, trn);
+  if (!trnman_increment_locked_tables(trn))
+  {
+    trans_register_ha(thd, FALSE, maria_hton, trn->trid);
+    trnman_new_statement(trn);
+  }
+#ifdef EXTRA_DEBUG
+  if (info->lock_type == F_WRLCK &&
+      ! (trnman_get_flags(trn) & TRN_STATE_INFO_LOGGED))
+  {
+    trnman_set_flags(trn, trnman_get_flags(trn) | TRN_STATE_INFO_LOGGED |
+                     TRN_STATE_TABLES_CAN_CHANGE);
+    (void) translog_log_debug_info(trn, LOGREC_DEBUG_INFO_QUERY,
+                                   (uchar*) thd->query(),
+                                   thd->query_length());
+  }
+  else
+  {
+    DBUG_PRINT("info", ("lock_type: %d  trnman_flags: %u",
+                        info->lock_type, trnman_get_flags(trn)));
+  }
+
+#endif
+  DBUG_RETURN(0);
+}
+
+my_bool ma_killed_in_mariadb(MARIA_HA *info)
+{
+  return (((TABLE*) (info->external_ref))->in_use->killed != 0);
+}
+
+} /* extern "C" */
+
+/**
+  Transactional table doing bulk insert with one single UNDO
+  (UNDO_BULK_INSERT) and with repair.
+*/
+#define BULK_INSERT_SINGLE_UNDO_AND_REPAIR    1
+/**
+  Transactional table doing bulk insert with one single UNDO
+  (UNDO_BULK_INSERT) and without repair.
+*/
+#define BULK_INSERT_SINGLE_UNDO_AND_NO_REPAIR 2
+/**
+  None of BULK_INSERT_SINGLE_UNDO_AND_REPAIR and
+  BULK_INSERT_SINGLE_UNDO_AND_NO_REPAIR.
+*/
+#define BULK_INSERT_NONE      0
+
+ha_maria::ha_maria(handlerton *hton, TABLE_SHARE *table_arg):
+handler(hton, table_arg), file(0),
+int_table_flags(HA_NULL_IN_KEY | HA_CAN_FULLTEXT | HA_CAN_SQL_HANDLER |
+                HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE |
+                HA_DUPLICATE_POS | HA_CAN_INDEX_BLOBS | HA_AUTO_PART_KEY |
+                HA_FILE_BASED | HA_CAN_GEOMETRY | TRANSACTION_STATE |
+                HA_CAN_BIT_FIELD | HA_CAN_RTREEKEYS | HA_CAN_REPAIR |
+                HA_CAN_VIRTUAL_COLUMNS | HA_CAN_EXPORT |
+                HA_HAS_RECORDS | HA_STATS_RECORDS_IS_EXACT |
+                HA_CAN_TABLES_WITHOUT_ROLLBACK),
+can_enable_indexes(0), bulk_insert_single_undo(BULK_INSERT_NONE)
+{}
+
+
+handler *ha_maria::clone(const char *name __attribute__((unused)),
+                         MEM_ROOT *mem_root)
+{
+  ha_maria *new_handler=
+    static_cast <ha_maria *>(handler::clone(file->s->open_file_name.str,
+                                            mem_root));
+  if (new_handler)
+  {
+    new_handler->file->state= file->state;
+    /* maria_create_trn_for_mysql() is never called for clone() tables */
+    new_handler->file->trn= file->trn;
+    DBUG_ASSERT(new_handler->file->trn_prev == 0 &&
+                new_handler->file->trn_next == 0);
+  }
+  return new_handler;
+}
+
+
+static const char *ha_maria_exts[]=
+{
+  MARIA_NAME_IEXT,
+  MARIA_NAME_DEXT,
+  NullS
+};
+
+
+const char *ha_maria::index_type(uint key_number)
+{
+  return ((table->key_info[key_number].flags & HA_FULLTEXT) ?
+          "FULLTEXT" :
+          (table->key_info[key_number].flags & HA_SPATIAL) ?
+          "SPATIAL" :
+          (table->key_info[key_number].algorithm == HA_KEY_ALG_RTREE) ?
+          "RTREE" : "BTREE");
+}
+
+
+ulong ha_maria::index_flags(uint inx, uint part, bool all_parts) const
+{
+  ulong flags;
+  if (table_share->key_info[inx].algorithm == HA_KEY_ALG_FULLTEXT)
+    flags= 0;
+  else
+  if ((table_share->key_info[inx].flags & HA_SPATIAL ||
+      table_share->key_info[inx].algorithm == HA_KEY_ALG_RTREE))
+  {
+    /* All GIS scans are non-ROR scans. We also disable IndexConditionPushdown */
+    flags= HA_READ_NEXT | HA_READ_PREV | HA_READ_RANGE |
+           HA_READ_ORDER | HA_KEYREAD_ONLY | HA_KEY_SCAN_NOT_ROR;
+  }
+  else
+  {
+    flags= HA_READ_NEXT | HA_READ_PREV | HA_READ_RANGE |
+          HA_READ_ORDER | HA_KEYREAD_ONLY | HA_DO_INDEX_COND_PUSHDOWN;
+  }
+  return flags;
+}
+
+
+double ha_maria::scan_time()
+{
+  if (file->s->data_file_type == BLOCK_RECORD)
+    return (ulonglong2double(stats.data_file_length - file->s->block_size) /
+            file->s->block_size) + 2;
+  return handler::scan_time();
+}
+
+/*
+  We need to be able to store at least 2 keys on an index page as the
+  splitting algorithms depends on this. (With only one key on a page
+  we also can't use any compression, which may make the index file much
+  larger)
+  We use MARIA_MAX_KEY_LENGTH to limit the key size as we don't want to use
+  too much stack when searching in the b_tree.
+
+  We also need to reserve place for a record pointer (8) and 3 bytes
+  per key segment to store the length of the segment + possible null bytes.
+  These extra bytes are required here so that maria_create() will surely
+  accept any keys created which the returned key data storage length.
+*/
+
+uint ha_maria::max_supported_key_length() const
+{
+  return maria_max_key_length();
+}
+
+/* Name is here without an extension */
+
+int ha_maria::open(const char *name, int mode, uint test_if_locked)
+{
+  uint i;
+
+#ifdef NOT_USED
+  /*
+    If the user wants to have memory mapped data files, add an
+    open_flag. Do not memory map temporary tables because they are
+    expected to be inserted and thus extended a lot. Memory mapping is
+    efficient for files that keep their size, but very inefficient for
+    growing files. Using an open_flag instead of calling ma_extra(...
+    HA_EXTRA_MMAP ...) after maxs_open() has the advantage that the
+    mapping is not repeated for every open, but just done on the initial
+    open, when the MyISAM share is created. Every time the server
+    requires to open a new instance of a table it calls this method. We
+    will always supply HA_OPEN_MMAP for a permanent table. However, the
+    Maria storage engine will ignore this flag if this is a secondary
+    open of a table that is in use by other threads already (if the
+    Maria share exists already).
+  */
+  if (!(test_if_locked & HA_OPEN_TMP_TABLE) && opt_maria_use_mmap)
+    test_if_locked|= HA_OPEN_MMAP;
+#endif
+
+  if (maria_recover_options & HA_RECOVER_ANY)
+  {
+    /* user asked to trigger a repair if table was not properly closed */
+    test_if_locked|= HA_OPEN_ABORT_IF_CRASHED;
+  }
+
+  if (aria_readonly)
+    test_if_locked|= HA_OPEN_IGNORE_MOVED_STATE;
+
+  if (!(file= maria_open(name, mode, test_if_locked | HA_OPEN_FROM_SQL_LAYER,
+                         s3_open_args())))
+  {
+    if (my_errno == HA_ERR_OLD_FILE)
+    {
+      push_warning(current_thd, Sql_condition::WARN_LEVEL_NOTE,
+                   ER_CRASHED_ON_USAGE,
+                   zerofill_error_msg);
+    }
+    return (my_errno ? my_errno : -1);
+  }
+  if (aria_readonly)
+    file->s->options|= HA_OPTION_READ_ONLY_DATA;
+
+  file->s->chst_invalidator= query_cache_invalidate_by_MyISAM_filename_ref;
+  /* Set external_ref, mainly for temporary tables */
+  file->external_ref= (void*) table;            // For ma_killed()
+
+  if (test_if_locked & (HA_OPEN_IGNORE_IF_LOCKED | HA_OPEN_TMP_TABLE))
+    maria_extra(file, HA_EXTRA_NO_WAIT_LOCK, 0);
+
+  info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST);
+  if (!(test_if_locked & HA_OPEN_WAIT_IF_LOCKED))
+    maria_extra(file, HA_EXTRA_WAIT_LOCK, 0);
+  if ((data_file_type= file->s->data_file_type) != STATIC_RECORD)
+    int_table_flags |= HA_REC_NOT_IN_SEQ;
+  if (!file->s->base.born_transactional)
+  {
+    /*
+      INSERT DELAYED cannot work with transactional tables (because it cannot
+      stand up to "when client gets ok the data is safe on disk": the record
+      may not even be inserted). In the future, we could enable it back (as a
+      client doing INSERT DELAYED knows the specificities; but we then should
+      make sure to regularly commit in the delayed_insert thread).
+    */
+    int_table_flags|= HA_CAN_INSERT_DELAYED | HA_NO_TRANSACTIONS;
+  }
+  else
+    int_table_flags|= HA_CRASH_SAFE;
+
+  if (file->s->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD))
+    int_table_flags |= HA_HAS_NEW_CHECKSUM;
+
+  /*
+    We can only do online backup on transactional tables with checksum.
+    Checksums are needed to avoid half writes.
+  */
+  if (file->s->options & HA_OPTION_PAGE_CHECKSUM &&
+      file->s->base.born_transactional)
+    int_table_flags |= HA_CAN_ONLINE_BACKUPS;
+
+  /*
+    For static size rows, tell MariaDB that we will access all bytes
+    in the record when writing it.  This signals MariaDB to initialize
+    the full row to ensure we don't get any errors from valgrind and
+    that all bytes in the row is properly reset.
+  */
+  if (file->s->data_file_type == STATIC_RECORD &&
+      (file->s->has_varchar_fields || file->s->has_null_fields))
+    int_table_flags|= HA_RECORD_MUST_BE_CLEAN_ON_WRITE;
+
+  for (i= 0; i < table->s->keys; i++)
+  {
+    plugin_ref parser= table->key_info[i].parser;
+    if (table->key_info[i].flags & HA_USES_PARSER)
+      file->s->keyinfo[i].parser=
+        (struct st_mysql_ftparser *)plugin_decl(parser)->info;
+    table->key_info[i].block_size= file->s->keyinfo[i].block_length;
+  }
+  my_errno= 0;
+
+  /* Count statistics of usage for newly open normal files */
+  if (file->s->reopen == 1 && ! (test_if_locked & HA_OPEN_TMP_TABLE))
+  {
+    if (file->s->delay_key_write)
+      feature_files_opened_with_delayed_keys++;
+  }
+
+  return my_errno;
+}
+
+
+int ha_maria::close(void)
+{
+  MARIA_HA *tmp= file;
+  if (!tmp)
+    return 0;
+  DBUG_ASSERT(file->trn == 0 || file->trn == &dummy_transaction_object);
+  DBUG_ASSERT(file->trn_next == 0 && file->trn_prev == 0);
+  file= 0;
+  return maria_close(tmp);
+}
+
+
+int ha_maria::write_row(const uchar * buf)
+{
+  /*
+     If we have an auto_increment column and we are writing a changed row
+     or a new row, then update the auto_increment value in the record.
+  */
+  if (table->next_number_field && buf == table->record[0])
+  {
+    int error;
+    if ((error= update_auto_increment()))
+      return error;
+  }
+  return maria_write(file, buf);
+}
+
+
+int ha_maria::check(THD * thd, HA_CHECK_OPT * check_opt)
+{
+  int error, fatal_error;
+  HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+  MARIA_SHARE *share= file->s;
+  const char *old_proc_info;
+  TRN *old_trn= file->trn;
+
+  if (!file || !param) return HA_ADMIN_INTERNAL_ERROR;
+
+  unmap_file(file);
+  maria_chk_init(param);
+  param->thd= thd;
+  param->op_name= "check";
+  param->db_name= table->s->db.str;
+  param->table_name= table->alias.c_ptr();
+  param->testflag= check_opt->flags | T_CHECK | T_SILENT;
+  param->stats_method= (enum_handler_stats_method)THDVAR(thd,stats_method);
+
+  if (!(table->db_stat & HA_READ_ONLY))
+    param->testflag |= T_STATISTICS;
+  param->using_global_keycache= 1;
+
+  if (!maria_is_crashed(file) &&
+      (((param->testflag & T_CHECK_ONLY_CHANGED) &&
+        !(share->state.changed & (STATE_CHANGED | STATE_CRASHED_FLAGS |
+                                  STATE_IN_REPAIR)) &&
+        share->state.open_count == 0) ||
+       ((param->testflag & T_FAST) && (share->state.open_count ==
+                                      (uint) (share->global_changed ? 1 :
+                                              0)))))
+    return HA_ADMIN_ALREADY_DONE;
+
+  maria_chk_init_for_check(param, file);
+  param->max_allowed_lsn= translog_get_horizon();
+
+  if ((file->s->state.changed & (STATE_CRASHED_FLAGS | STATE_MOVED)) ==
+      STATE_MOVED)
+  {
+    _ma_check_print_error(param, "%s", zerofill_error_msg);
+    return HA_ADMIN_CORRUPT;
+  }
+
+  old_proc_info= thd_proc_info(thd, "Checking status");
+  thd_progress_init(thd, 3);
+  error= maria_chk_status(param, file);                // Not fatal
+  /* maria_chk_size() will flush the page cache for this file */
+  if (maria_chk_size(param, file))
+    error= 1;
+  if (!error)
+    error|= maria_chk_del(param, file, param->testflag);
+  thd_proc_info(thd, "Checking keys");
+  thd_progress_next_stage(thd);
+  if (!error)
+    error= maria_chk_key(param, file);
+  thd_proc_info(thd, "Checking data");
+  thd_progress_next_stage(thd);
+  if (!error)
+  {
+    if ((!(param->testflag & T_QUICK) &&
+         ((share->options &
+           (HA_OPTION_PACK_RECORD | HA_OPTION_COMPRESS_RECORD)) ||
+          (param->testflag & (T_EXTEND | T_MEDIUM)))) || maria_is_crashed(file))
+    {
+      ulonglong old_testflag= param->testflag;
+      param->testflag |= T_MEDIUM;
+      if (!(error= init_io_cache(&param->read_cache, file->dfile.file,
+                                 my_default_record_cache_size, READ_CACHE,
+                                 share->pack.header_length, 1, MYF(MY_WME))))
+      {
+        error= maria_chk_data_link(param, file,
+                                   MY_TEST(param->testflag & T_EXTEND));
+        end_io_cache(&param->read_cache);
+      }
+      param->testflag= old_testflag;
+    }
+  }
+  fatal_error= error;
+  if (param->error_printed &&
+      param->error_printed == (param->skip_lsn_error_count +
+                               param->not_visible_rows_found) &&
+      !(share->state.changed & (STATE_CRASHED_FLAGS | STATE_IN_REPAIR)))
+  {
+    _ma_check_print_error(param, "%s", zerofill_error_msg);
+    /* This ensures that a future REPAIR TABLE will only do a zerofill */
+    file->update|= STATE_MOVED;
+    share->state.changed|= STATE_MOVED;
+    fatal_error= 0;
+  }
+  if (!fatal_error)
+  {
+    if ((share->state.changed & (STATE_CHANGED | STATE_MOVED |
+                                 STATE_CRASHED_FLAGS |
+                                 STATE_IN_REPAIR | STATE_NOT_ANALYZED)) ||
+        (param->testflag & T_STATISTICS) || maria_is_crashed(file))
+    {
+      file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
+      mysql_mutex_lock(&share->intern_lock);
+      DBUG_PRINT("info", ("Resetting crashed state"));
+      share->state.changed&= ~(STATE_CHANGED | STATE_CRASHED_FLAGS |
+                               STATE_IN_REPAIR);
+      if (!(table->db_stat & HA_READ_ONLY))
+      {
+        int tmp;
+        if ((tmp= maria_update_state_info(param, file,
+                                          UPDATE_TIME | UPDATE_OPEN_COUNT |
+                                          UPDATE_STAT)))
+          error= tmp;
+      }
+      mysql_mutex_unlock(&share->intern_lock);
+      info(HA_STATUS_NO_LOCK | HA_STATUS_TIME | HA_STATUS_VARIABLE |
+           HA_STATUS_CONST);
+
+      /*
+        Write a 'table is ok' message to error log if table is ok and
+        we have written to error log that table was getting checked
+      */
+      if (!error && !(table->db_stat & HA_READ_ONLY) &&
+          !maria_is_crashed(file) && thd->error_printed_to_log &&
+          (param->warning_printed || param->error_printed ||
+           param->note_printed))
+        _ma_check_print_info(param, "Table is fixed");
+    }
+  }
+  else if (!maria_is_crashed(file) && !thd->killed)
+  {
+    maria_mark_crashed(file);
+    file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
+  }
+
+  /* Reset trn, that may have been set by repair */
+  if (old_trn && old_trn != file->trn)
+  {
+    DBUG_ASSERT(old_trn->used_instances == 0);
+    _ma_set_trn_for_table(file, old_trn);
+  }
+  thd_proc_info(thd, old_proc_info);
+  thd_progress_end(thd);
+  return error ? HA_ADMIN_CORRUPT : HA_ADMIN_OK;
+}
+
+
+/*
+  Analyze the key distribution in the table
+  As the table may be only locked for read, we have to take into account that
+  two threads may do an analyze at the same time!
+*/
+
+int ha_maria::analyze(THD *thd, HA_CHECK_OPT * check_opt)
+{
+  int error= 0;
+  HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+  MARIA_SHARE *share= file->s;
+  const char *old_proc_info;
+
+  if (!param)
+    return HA_ADMIN_INTERNAL_ERROR;
+
+  maria_chk_init(param);
+  param->thd= thd;
+  param->op_name= "analyze";
+  param->db_name= table->s->db.str;
+  param->table_name= table->alias.c_ptr();
+  param->testflag= (T_FAST | T_CHECK | T_SILENT | T_STATISTICS |
+                   T_DONT_CHECK_CHECKSUM);
+  param->using_global_keycache= 1;
+  param->stats_method= (enum_handler_stats_method)THDVAR(thd,stats_method);
+
+  if (!(share->state.changed & STATE_NOT_ANALYZED))
+    return HA_ADMIN_ALREADY_DONE;
+
+  old_proc_info= thd_proc_info(thd, "Scanning");
+  thd_progress_init(thd, 1);
+  error= maria_chk_key(param, file);
+  if (!error)
+  {
+    mysql_mutex_lock(&share->intern_lock);
+    error= maria_update_state_info(param, file, UPDATE_STAT);
+    mysql_mutex_unlock(&share->intern_lock);
+  }
+  else if (!maria_is_crashed(file) && !thd->killed)
+    maria_mark_crashed(file);
+  thd_proc_info(thd, old_proc_info);
+  thd_progress_end(thd);
+  return error ? HA_ADMIN_CORRUPT : HA_ADMIN_OK;
+}
+
+int ha_maria::repair(THD * thd, HA_CHECK_OPT *check_opt)
+{
+  int error;
+  HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+  ha_rows start_records;
+  const char *old_proc_info;
+
+  if (!file || !param)
+    return HA_ADMIN_INTERNAL_ERROR;
+
+  maria_chk_init(param);
+  param->thd= thd;
+  param->op_name= "repair";
+
+  /*
+    The following can only be true if the table was marked as STATE_MOVED
+    during a CHECK TABLE and the table has not been used since then
+  */
+  if ((file->s->state.changed & STATE_MOVED) &&
+      !(file->s->state.changed & STATE_CRASHED_FLAGS))
+  {
+    param->db_name= table->s->db.str;
+    param->table_name= table->alias.c_ptr();
+    _ma_check_print_info(param, "Running zerofill on moved table");
+    return zerofill(thd, check_opt);
+  }
+
+  param->testflag= ((check_opt->flags & ~(T_EXTEND)) |
+                   T_SILENT | T_FORCE_CREATE | T_CALC_CHECKSUM |
+                   (check_opt->flags & T_EXTEND ? T_REP : T_REP_BY_SORT));
+  param->sort_buffer_length= THDVAR(thd, sort_buffer_size);
+  param->backup_time= check_opt->start_time;
+  start_records= file->state->records;
+  old_proc_info= thd_proc_info(thd, "Checking table");
+  thd_progress_init(thd, 1);
+  while ((error= repair(thd, param, 0)) && param->retry_repair)
+  {
+    param->retry_repair= 0;
+    file->state->records= start_records;
+    if (test_all_bits(param->testflag,
+                      (uint) (T_RETRY_WITHOUT_QUICK | T_QUICK)))
+    {
+      param->testflag&= ~(T_RETRY_WITHOUT_QUICK | T_QUICK);
+      /* Ensure we don't loose any rows when retrying without quick */
+      param->testflag|= T_SAFE_REPAIR;
+      if (thd->vio_ok())
+        _ma_check_print_info(param, "Retrying repair without quick");
+      else
+        sql_print_information("Retrying repair of: '%s' without quick",
+                              table->s->path.str);
+      continue;
+    }
+    param->testflag &= ~T_QUICK;
+    if (param->testflag & T_REP_BY_SORT)
+    {
+      param->testflag= (param->testflag & ~T_REP_BY_SORT) | T_REP;
+      if (thd->vio_ok())
+        _ma_check_print_info(param, "Retrying repair with keycache");
+      sql_print_information("Retrying repair of: '%s' with keycache",
+                            table->s->path.str);
+      continue;
+    }
+    break;
+  }
+  /*
+    Commit is needed in the case of tables are locked to ensure that repair
+    is registered in the recovery log
+  */
+  if (implicit_commit(thd, TRUE))
+    error= HA_ADMIN_COMMIT_ERROR;
+
+  if (!error && start_records != file->state->records &&
+      !(check_opt->flags & T_VERY_SILENT))
+  {
+    char llbuff[22], llbuff2[22];
+    sql_print_information("Found %s of %s rows when repairing '%s'",
+                          llstr(file->state->records, llbuff),
+                          llstr(start_records, llbuff2),
+                          table->s->path.str);
+  }
+  thd_proc_info(thd, old_proc_info);
+  thd_progress_end(thd);
+  return error;
+}
+
+int ha_maria::zerofill(THD * thd, HA_CHECK_OPT *check_opt)
+{
+  int error;
+  HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+  TRN *old_trn;
+  MARIA_SHARE *share= file->s;
+
+  if (!file || !param)
+    return HA_ADMIN_INTERNAL_ERROR;
+
+  unmap_file(file);
+  old_trn= file->trn;
+  maria_chk_init(param);
+  param->thd= thd;
+  param->op_name= "zerofill";
+  param->testflag= check_opt->flags | T_SILENT | T_ZEROFILL;
+  param->sort_buffer_length= THDVAR(thd, sort_buffer_size);
+  param->db_name= table->s->db.str;
+  param->table_name= table->alias.c_ptr();
+
+  error=maria_zerofill(param, file, share->open_file_name.str);
+
+  /* Reset trn, that may have been set by repair */
+  if (old_trn && old_trn != file->trn)
+    _ma_set_trn_for_table(file, old_trn);
+
+  if (!error)
+  {
+    TrID create_trid= trnman_get_min_safe_trid();
+    mysql_mutex_lock(&share->intern_lock);
+    share->state.changed|= STATE_NOT_MOVABLE;
+    maria_update_state_info(param, file, UPDATE_TIME | UPDATE_OPEN_COUNT);
+    _ma_update_state_lsns_sub(share, LSN_IMPOSSIBLE, create_trid,
+                              TRUE, TRUE);
+    mysql_mutex_unlock(&share->intern_lock);
+  }
+  return error;
+}
+
+int ha_maria::optimize(THD * thd, HA_CHECK_OPT *check_opt)
+{
+  int error;
+  HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+
+  if (!file || !param)
+    return HA_ADMIN_INTERNAL_ERROR;
+
+  maria_chk_init(param);
+  param->thd= thd;
+  param->op_name= "optimize";
+  param->testflag= (check_opt->flags | T_SILENT | T_FORCE_CREATE |
+                   T_REP_BY_SORT | T_STATISTICS | T_SORT_INDEX);
+  param->sort_buffer_length= THDVAR(thd, sort_buffer_size);
+  thd_progress_init(thd, 1);
+  if ((error= repair(thd, param, 1)) && param->retry_repair)
+  {
+    sql_print_warning("Warning: Optimize table got errno %d on %s.%s, retrying",
+                      my_errno, param->db_name, param->table_name);
+    param->testflag &= ~T_REP_BY_SORT;
+    error= repair(thd, param, 0);
+  }
+  thd_progress_end(thd);
+  return error;
+}
+
+
+int ha_maria::repair(THD *thd, HA_CHECK *param, bool do_optimize)
+{
+  int error= 0;
+  ulonglong local_testflag= param->testflag;
+  bool optimize_done= !do_optimize, statistics_done= 0, full_repair_done= 0;
+  const char *old_proc_info= thd->proc_info;
+  char fixed_name[FN_REFLEN];
+  MARIA_SHARE *share= file->s;
+  ha_rows rows= file->state->records;
+  TRN *old_trn= file->trn;
+  my_bool locking= 0;
+  DBUG_ENTER("ha_maria::repair");
+
+  /*
+    Normally this method is entered with a properly opened table. If the
+    repair fails, it can be repeated with more elaborate options. Under
+    special circumstances it can happen that a repair fails so that it
+    closed the data file and cannot re-open it. In this case file->dfile
+    is set to -1. We must not try another repair without an open data
+    file. (Bug #25289)
+  */
+  if (file->dfile.file == -1)
+  {
+    sql_print_information("Retrying repair of: '%s' failed. "
+                          "Please try REPAIR EXTENDED or aria_chk",
+                          table->s->path.str);
+    DBUG_RETURN(HA_ADMIN_FAILED);
+  }
+
+  /*
+    If transactions was not enabled for a transactional table then
+    file->s->status is not up to date. This is needed for repair_by_sort
+    to work
+  */
+  if (share->base.born_transactional && !share->now_transactional)
+    _ma_copy_nontrans_state_information(file);
+
+  param->db_name= table->s->db.str;
+  param->table_name= table->alias.c_ptr();
+  param->tmpfile_createflag= O_RDWR | O_TRUNC;
+  param->using_global_keycache= 1;
+  param->thd= thd;
+  param->tmpdir= &mysql_tmpdir_list;
+  param->out_flag= 0;
+  share->state.dupp_key= MI_MAX_KEY;
+  strmov(fixed_name, share->open_file_name.str);
+  unmap_file(file);
+
+  /*
+    Don't lock tables if we have used LOCK TABLE or if we come from
+    enable_index()
+  */
+  if (!thd->locked_tables_mode && ! (param->testflag & T_NO_LOCKS))
+  {
+    locking= 1;
+    if (maria_lock_database(file, table->s->tmp_table ? F_EXTRA_LCK : F_WRLCK))
+    {
+      _ma_check_print_error(param, ER_THD(thd, ER_CANT_LOCK), my_errno);
+      DBUG_RETURN(HA_ADMIN_FAILED);
+    }
+  }
+
+  if (!do_optimize ||
+      (((share->data_file_type == BLOCK_RECORD) ?
+        (share->state.changed & STATE_NOT_OPTIMIZED_ROWS) :
+        (file->state->del ||
+         share->state.split != file->state->records)) &&
+       (!(param->testflag & T_QUICK) ||
+        (share->state.changed & (STATE_NOT_OPTIMIZED_KEYS |
+                                 STATE_NOT_OPTIMIZED_ROWS)))))
+  {
+    ulonglong key_map= ((local_testflag & T_CREATE_MISSING_KEYS) ?
+                        maria_get_mask_all_keys_active(share->base.keys) :
+                        share->state.key_map);
+    ulonglong save_testflag= param->testflag;
+    if (maria_test_if_sort_rep(file, file->state->records, key_map, 0) &&
+        (local_testflag & T_REP_BY_SORT))
+    {
+      local_testflag |= T_STATISTICS;
+      param->testflag |= T_STATISTICS;           // We get this for free
+      statistics_done= 1;
+      /* TODO: Remove BLOCK_RECORD test when parallel works with blocks */
+      if (THDVAR(thd,repair_threads) > 1 &&
+          share->data_file_type != BLOCK_RECORD)
+      {
+        char buf[40];
+        /* TODO: respect maria_repair_threads variable */
+        my_snprintf(buf, 40, "Repair with %d threads", my_count_bits(key_map));
+        thd_proc_info(thd, buf);
+        param->testflag|= T_REP_PARALLEL;
+        error= maria_repair_parallel(param, file, fixed_name,
+                                     MY_TEST(param->testflag & T_QUICK));
+        /* to reset proc_info, as it was pointing to local buffer */
+        thd_proc_info(thd, "Repair done");
+      }
+      else
+      {
+        thd_proc_info(thd, "Repair by sorting");
+        param->testflag|= T_REP_BY_SORT;
+        error= maria_repair_by_sort(param, file, fixed_name,
+                                    MY_TEST(param->testflag & T_QUICK));
+      }
+      if (error && file->create_unique_index_by_sort &&
+          share->state.dupp_key != MAX_KEY)
+      {
+        my_errno= HA_ERR_FOUND_DUPP_KEY;
+        print_keydup_error(table, &table->key_info[share->state.dupp_key],
+                           MYF(0));
+      }
+    }
+    else
+    {
+      thd_proc_info(thd, "Repair with keycache");
+      param->testflag &= ~(T_REP_BY_SORT | T_REP_PARALLEL);
+      error= maria_repair(param, file, fixed_name,
+                          MY_TEST(param->testflag & T_QUICK));
+    }
+    param->testflag= save_testflag | (param->testflag & T_RETRY_WITHOUT_QUICK);
+    optimize_done= 1;
+    /*
+      set full_repair_done if we re-wrote all rows and all keys
+      (and thus removed all transid's from the table
+    */
+    full_repair_done= !MY_TEST(param->testflag & T_QUICK);
+  }
+  if (!error)
+  {
+    if ((local_testflag & T_SORT_INDEX) &&
+        (share->state.changed & STATE_NOT_SORTED_PAGES))
+    {
+      optimize_done= 1;
+      thd_proc_info(thd, "Sorting index");
+      error= maria_sort_index(param, file, fixed_name);
+    }
+    if (!error && !statistics_done && (local_testflag & T_STATISTICS))
+    {
+      if (share->state.changed & STATE_NOT_ANALYZED)
+      {
+        optimize_done= 1;
+        thd_proc_info(thd, "Analyzing");
+        error= maria_chk_key(param, file);
+      }
+      else
+        local_testflag &= ~T_STATISTICS;        // Don't update statistics
+    }
+  }
+  thd_proc_info(thd, "Saving state");
+  if (full_repair_done && !error &&
+      !(param->testflag & T_NO_CREATE_RENAME_LSN))
+  {
+    /* Set trid (needed if the table was moved from another system) */
+    share->state.create_trid= trnman_get_min_safe_trid();
+  }
+  mysql_mutex_lock(&share->intern_lock);
+  if (!error)
+  {
+    if ((share->state.changed & STATE_CHANGED) || maria_is_crashed(file))
+    {
+      DBUG_PRINT("info", ("Resetting crashed state"));
+      share->state.changed&= ~(STATE_CHANGED | STATE_CRASHED_FLAGS |
+                               STATE_IN_REPAIR | STATE_MOVED);
+      file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
+    }
+    /*
+      repair updates share->state.state. Ensure that file->state is up to date
+    */
+    if (file->state != &share->state.state)
+      *file->state= share->state.state;
+
+    if (share->base.auto_key)
+      _ma_update_auto_increment_key(param, file, 1);
+    if (optimize_done)
+      error= maria_update_state_info(param, file,
+                                     UPDATE_TIME | UPDATE_OPEN_COUNT |
+                                     (local_testflag &
+                                      T_STATISTICS ? UPDATE_STAT : 0));
+    /* File is repaired; Mark the file as moved to this system */
+    (void) _ma_set_uuid(share, 0);
+
+    info(HA_STATUS_NO_LOCK | HA_STATUS_TIME | HA_STATUS_VARIABLE |
+         HA_STATUS_CONST);
+    if (rows != file->state->records && !(param->testflag & T_VERY_SILENT))
+    {
+      char llbuff[22], llbuff2[22];
+      _ma_check_print_warning(param, "Number of rows changed from %s to %s",
+                              llstr(rows, llbuff),
+                              llstr(file->state->records, llbuff2));
+    }
+  }
+  else
+  {
+    maria_mark_crashed_on_repair(file);
+    file->update |= HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
+    maria_update_state_info(param, file, 0);
+  }
+  mysql_mutex_unlock(&share->intern_lock);
+  thd_proc_info(thd, old_proc_info);
+  thd_progress_end(thd);                        // Mark done
+  if (locking)
+    maria_lock_database(file, F_UNLCK);
+
+  /* Reset trn, that may have been set by repair */
+  if (old_trn && old_trn != file->trn)
+    _ma_set_trn_for_table(file, old_trn);
+  error= error ? HA_ADMIN_FAILED :
+    (optimize_done ?
+     (write_log_record_for_repair(param, file) ? HA_ADMIN_FAILED :
+      HA_ADMIN_OK) : HA_ADMIN_ALREADY_DONE);
+  DBUG_RETURN(error);
+}
+
+
+/*
+  Assign table indexes to a specific key cache.
+*/
+
+int ha_maria::assign_to_keycache(THD * thd, HA_CHECK_OPT *check_opt)
+{
+#if 0 && NOT_IMPLEMENTED
+  PAGECACHE *new_pagecache= check_opt->pagecache;
+  const char *errmsg= 0;
+  int error= HA_ADMIN_OK;
+  ulonglong map;
+  TABLE_LIST *table_list= table->pos_in_table_list;
+  DBUG_ENTER("ha_maria::assign_to_keycache");
+
+  table->keys_in_use_for_query.clear_all();
+
+  if (table_list->process_index_hints(table))
+    DBUG_RETURN(HA_ADMIN_FAILED);
+  map= ~(ulonglong) 0;
+  if (!table->keys_in_use_for_query.is_clear_all())
+    /* use all keys if there's no list specified by the user through hints */
+    map= table->keys_in_use_for_query.to_ulonglong();
+
+  if ((error= maria_assign_to_pagecache(file, map, new_pagecache)))
+  {
+    char buf[STRING_BUFFER_USUAL_SIZE];
+    my_snprintf(buf, sizeof(buf),
+                "Failed to flush to index file (errno: %d)", error);
+    errmsg= buf;
+    error= HA_ADMIN_CORRUPT;
+  }
+
+  if (error != HA_ADMIN_OK)
+  {
+    /* Send error to user */
+    HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+    if (!param)
+      return HA_ADMIN_INTERNAL_ERROR;
+
+    maria_chk_init(param);
+    param->thd= thd;
+    param->op_name= "assign_to_keycache";
+    param->db_name= table->s->db.str;
+    param->table_name= table->s->table_name.str;
+    param->testflag= 0;
+    _ma_check_print_error(param, errmsg);
+  }
+  DBUG_RETURN(error);
+#else
+  return  HA_ADMIN_NOT_IMPLEMENTED;
+#endif
+}
+
+
+/*
+  Preload pages of the index file for a table into the key cache.
+*/
+
+int ha_maria::preload_keys(THD * thd, HA_CHECK_OPT *check_opt)
+{
+  ulonglong map;
+  TABLE_LIST *table_list= table->pos_in_table_list;
+
+  DBUG_ENTER("ha_maria::preload_keys");
+
+  table->keys_in_use_for_query.clear_all();
+
+  if (table_list->process_index_hints(table))
+    DBUG_RETURN(HA_ADMIN_FAILED);
+
+  map= ~(ulonglong) 0;
+  /* Check validity of the index references */
+  if (!table->keys_in_use_for_query.is_clear_all())
+    /* use all keys if there's no list specified by the user through hints */
+    map= table->keys_in_use_for_query.to_ulonglong();
+
+  maria_extra(file, HA_EXTRA_PRELOAD_BUFFER_SIZE,
+              (void*) &thd->variables.preload_buff_size);
+
+  int error;
+
+  if ((error= maria_preload(file, map, table_list->ignore_leaves)))
+  {
+    char buf[MYSQL_ERRMSG_SIZE+20];
+    const char *errmsg;
+
+    switch (error) {
+    case HA_ERR_NON_UNIQUE_BLOCK_SIZE:
+      errmsg= "Indexes use different block sizes";
+      break;
+    case HA_ERR_OUT_OF_MEM:
+      errmsg= "Failed to allocate buffer";
+      break;
+    default:
+      my_snprintf(buf, sizeof(buf),
+                  "Failed to read from index file (errno: %d)", my_errno);
+      errmsg= buf;
+    }
+
+    HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+    if (!param)
+      return HA_ADMIN_INTERNAL_ERROR;
+
+    maria_chk_init(param);
+    param->thd= thd;
+    param->op_name= "preload_keys";
+    param->db_name= table->s->db.str;
+    param->table_name= table->s->table_name.str;
+    param->testflag= 0;
+    _ma_check_print_error(param, "%s", errmsg);
+    DBUG_RETURN(HA_ADMIN_FAILED);
+  }
+  DBUG_RETURN(HA_ADMIN_OK);
+}
+
+
+/*
+  Disable indexes, making it persistent if requested.
+
+  SYNOPSIS
+    disable_indexes()
+    mode        mode of operation:
+                HA_KEY_SWITCH_NONUNIQ      disable all non-unique keys
+                HA_KEY_SWITCH_ALL          disable all keys
+                HA_KEY_SWITCH_NONUNIQ_SAVE dis. non-uni. and make persistent
+                HA_KEY_SWITCH_ALL_SAVE     dis. all keys and make persistent
+
+  IMPLEMENTATION
+    HA_KEY_SWITCH_NONUNIQ       is not implemented.
+    HA_KEY_SWITCH_ALL_SAVE      is not implemented.
+
+  RETURN
+    0  ok
+    HA_ERR_WRONG_COMMAND  mode not implemented.
+*/
+
+int ha_maria::disable_indexes(uint mode)
+{
+  int error;
+
+  if (mode == HA_KEY_SWITCH_ALL)
+  {
+    /* call a storage engine function to switch the key map */
+    error= maria_disable_indexes(file);
+  }
+  else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
+  {
+    maria_extra(file, HA_EXTRA_NO_KEYS, 0);
+    info(HA_STATUS_CONST);                      // Read new key info
+    error= 0;
+  }
+  else
+  {
+    /* mode not implemented */
+    error= HA_ERR_WRONG_COMMAND;
+  }
+  return error;
+}
+
+
+/*
+  Enable indexes, making it persistent if requested.
+
+  SYNOPSIS
+    enable_indexes()
+    mode        mode of operation:
+                HA_KEY_SWITCH_NONUNIQ      enable all non-unique keys
+                HA_KEY_SWITCH_ALL          enable all keys
+                HA_KEY_SWITCH_NONUNIQ_SAVE en. non-uni. and make persistent
+                HA_KEY_SWITCH_ALL_SAVE     en. all keys and make persistent
+
+  DESCRIPTION
+    Enable indexes, which might have been disabled by disable_index() before.
+    The modes without _SAVE work only if both data and indexes are empty,
+    since the MARIA repair would enable them persistently.
+    To be sure in these cases, call handler::delete_all_rows() before.
+
+  IMPLEMENTATION
+    HA_KEY_SWITCH_NONUNIQ       is not implemented.
+    HA_KEY_SWITCH_ALL_SAVE      is not implemented.
+
+  RETURN
+    0  ok
+    !=0  Error, among others:
+    HA_ERR_CRASHED  data or index is non-empty. Delete all rows and retry.
+    HA_ERR_WRONG_COMMAND  mode not implemented.
+*/
+
+int ha_maria::enable_indexes(uint mode)
+{
+  int error;
+  ha_rows start_rows= file->state->records;
+  DBUG_PRINT("info", ("ha_maria::enable_indexes mode: %d", mode));
+  if (maria_is_all_keys_active(file->s->state.key_map, file->s->base.keys))
+  {
+    /* All indexes are enabled already. */
+    return 0;
+  }
+
+  if (mode == HA_KEY_SWITCH_ALL)
+  {
+    error= maria_enable_indexes(file);
+    /*
+       Do not try to repair on error,
+       as this could make the enabled state persistent,
+       but mode==HA_KEY_SWITCH_ALL forbids it.
+    */
+  }
+  else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
+  {
+    THD *thd= table->in_use;
+    HA_CHECK *param= (HA_CHECK*) thd->alloc(sizeof *param);
+    if (!param)
+      return HA_ADMIN_INTERNAL_ERROR;
+
+    const char *save_proc_info= thd_proc_info(thd, "Creating index");
+
+    maria_chk_init(param);
+    param->op_name= "recreating_index";
+    param->testflag= (T_SILENT | T_REP_BY_SORT | T_QUICK |
+                     T_CREATE_MISSING_KEYS | T_SAFE_REPAIR);
+    /*
+      Don't lock and unlock table if it's locked.
+      Normally table should be locked.  This test is mostly for safety.
+    */
+    if (likely(file->lock_type != F_UNLCK))
+      param->testflag|= T_NO_LOCKS;
+
+    if (file->create_unique_index_by_sort)
+      param->testflag|= T_CREATE_UNIQUE_BY_SORT;
+
+    if (bulk_insert_single_undo == BULK_INSERT_SINGLE_UNDO_AND_NO_REPAIR)
+    {
+      bulk_insert_single_undo= BULK_INSERT_SINGLE_UNDO_AND_REPAIR;
+      /*
+        Don't bump create_rename_lsn, because UNDO_BULK_INSERT
+        should not be skipped in case of crash during repair.
+      */
+      param->testflag|= T_NO_CREATE_RENAME_LSN;
+    }
+
+    param->myf_rw &= ~MY_WAIT_IF_FULL;
+    param->sort_buffer_length= THDVAR(thd,sort_buffer_size);
+    param->stats_method= (enum_handler_stats_method)THDVAR(thd,stats_method);
+    param->tmpdir= &mysql_tmpdir_list;
+    if ((error= (repair(thd, param, 0) != HA_ADMIN_OK)) && param->retry_repair)
+    {
+      sql_print_warning("Warning: Enabling keys got errno %d on %s.%s, "
+                        "retrying",
+                        my_errno, param->db_name, param->table_name);
+      /* This should never fail normally */
+      DBUG_ASSERT(thd->killed != 0);
+      /* Repairing by sort failed. Now try standard repair method. */
+      param->testflag &= ~T_REP_BY_SORT;
+      file->state->records= start_rows;
+      error= (repair(thd, param, 0) != HA_ADMIN_OK);
+      /*
+        If the standard repair succeeded, clear all error messages which
+        might have been set by the first repair. They can still be seen
+        with SHOW WARNINGS then.
+      */
+      if (!error)
+        thd->clear_error();
+    }
+    info(HA_STATUS_CONST);
+    thd_proc_info(thd, save_proc_info);
+  }
+  else
+  {
+    /* mode not implemented */
+    error= HA_ERR_WRONG_COMMAND;
+  }
+  DBUG_EXECUTE_IF("maria_flush_whole_log",
+                  {
+                    DBUG_PRINT("maria_flush_whole_log", ("now"));
+                    translog_flush(translog_get_horizon());
+                  });
+  DBUG_EXECUTE_IF("maria_crash_enable_index",
+                  {
+                    DBUG_PRINT("maria_crash_enable_index", ("now"));
+                    DBUG_SUICIDE();
+                  });
+  return error;
+}
+
+
+/*
+  Test if indexes are disabled.
+
+
+  SYNOPSIS
+    indexes_are_disabled()
+      no parameters
+
+
+  RETURN
+    0  indexes are not disabled
+    1  all indexes are disabled
+   [2  non-unique indexes are disabled - NOT YET IMPLEMENTED]
+*/
+
+int ha_maria::indexes_are_disabled(void)
+{
+  return maria_indexes_are_disabled(file);
+}
+
+
+/*
+  prepare for a many-rows insert operation
+  e.g. - disable indexes (if they can be recreated fast) or
+  activate special bulk-insert optimizations
+
+  SYNOPSIS
+   start_bulk_insert(rows, flags)
+   rows        Rows to be inserted
+                0 if we don't know
+   flags       Flags to control index creation
+
+  NOTICE
+    Do not forget to call end_bulk_insert() later!
+*/
+
+void ha_maria::start_bulk_insert(ha_rows rows, uint flags)
+{
+  DBUG_ENTER("ha_maria::start_bulk_insert");
+  THD *thd= table->in_use;
+  MARIA_SHARE *share= file->s;
+  bool index_disabled= 0;
+  DBUG_PRINT("info", ("start_bulk_insert: rows %lu", (ulong) rows));
+
+  /* don't enable row cache if too few rows */
+  if ((!rows || rows > MARIA_MIN_ROWS_TO_USE_WRITE_CACHE) && !has_long_unique())
+  {
+    ulonglong size= thd->variables.read_buff_size, tmp;
+    if (rows)
+    {
+      if (file->state->records)
+      {
+        MARIA_INFO maria_info;
+        maria_status(file, &maria_info, HA_STATUS_NO_LOCK |HA_STATUS_VARIABLE);
+        set_if_smaller(size, maria_info.mean_reclength * rows);
+      }
+      else if (table->s->avg_row_length)
+        set_if_smaller(size, (size_t) (table->s->avg_row_length * rows));
+    }
+    tmp= (ulong) size;                          // Safe becasue of limits
+    maria_extra(file, HA_EXTRA_WRITE_CACHE, (void*) &tmp);
+  }
+
+  can_enable_indexes= (maria_is_all_keys_active(share->state.key_map,
+                                                share->base.keys));
+  bulk_insert_single_undo= BULK_INSERT_NONE;
+
+  if (!(specialflag & SPECIAL_SAFE_MODE))
+  {
+    /*
+       Only disable old index if the table was empty and we are inserting
+       a lot of rows.
+       We should not do this for only a few rows as this is slower and
+       we don't want to update the key statistics based of only a few rows.
+       Index file rebuild requires an exclusive lock, so if versioning is on
+       don't do it (see how ha_maria::store_lock() tries to predict repair).
+       We can repair index only if we have an exclusive (TL_WRITE) lock or
+       if this is inside an ALTER TABLE, in which case lock_type == TL_UNLOCK.
+
+       To see if table is empty, we shouldn't rely on the old record
+       count from our transaction's start (if that old count is 0 but
+       now there are records in the table, we would wrongly destroy
+       them).  So we need to look at share->state.state.records.  As a
+       safety net for now, we don't remove the test of
+       file->state->records, because there is uncertainty on what will
+       happen during repair if the two states disagree.
+
+       We also have to check in case of transactional tables that the
+       user has not used LOCK TABLE on the table twice.
+    */
+    if ((file->state->records == 0) &&
+        (share->state.state.records == 0) && can_enable_indexes &&
+        (!rows || rows >= MARIA_MIN_ROWS_TO_DISABLE_INDEXES) &&
+        (file->lock.type == TL_WRITE || file->lock.type == TL_UNLOCK) &&
+        (!share->have_versioning || !share->now_transactional ||
+         file->used_tables->use_count == 1))
+    {
+      /**
+         @todo for a single-row INSERT SELECT, we will go into repair, which
+         is more costly (flushes, syncs) than a row write.
+      */
+      if (file->open_flags & HA_OPEN_INTERNAL_TABLE)
+      {
+        /* Internal table; If we get a duplicate something is very wrong */
+        file->update|= HA_STATE_CHANGED;
+        index_disabled= share->base.keys > 0;
+        maria_clear_all_keys_active(file->s->state.key_map);
+      }
+      else
+      {
+        my_bool all_keys= MY_TEST(flags & HA_CREATE_UNIQUE_INDEX_BY_SORT);
+        /*
+          Deactivate all indexes that can be recreated fast.
+          These include packed keys on which sorting will use more temporary
+          space than the max allowed file length or for which the unpacked keys
+          will take much more space than packed keys.
+          Note that 'rows' may be zero for the case when we don't know how many
+          rows we will put into the file.
+        */
+        MARIA_SHARE *share= file->s;
+        MARIA_KEYDEF    *key=share->keyinfo;
+        uint          i;
+
+        DBUG_ASSERT(share->state.state.records == 0 &&
+                    (!rows || rows >= MARIA_MIN_ROWS_TO_DISABLE_INDEXES));
+        for (i=0 ; i < share->base.keys ; i++,key++)
+        {
+          if (!(key->flag & (HA_SPATIAL | HA_AUTO_KEY | HA_RTREE_INDEX)) &&
+              ! maria_too_big_key_for_sort(key,rows) && share->base.auto_key != i+1 &&
+              (all_keys || !(key->flag & HA_NOSAME)) &&
+              table->key_info[i].algorithm != HA_KEY_ALG_LONG_HASH)
+          {
+            maria_clear_key_active(share->state.key_map, i);
+            index_disabled= 1;
+            file->update|= HA_STATE_CHANGED;
+            file->create_unique_index_by_sort= all_keys;
+          }
+        }
+      }
+      if (share->now_transactional)
+      {
+        bulk_insert_single_undo= BULK_INSERT_SINGLE_UNDO_AND_NO_REPAIR;
+        write_log_record_for_bulk_insert(file);
+        _ma_tmp_disable_logging_for_table(file, TRUE);
+        /*
+          Pages currently in the page cache have type PAGECACHE_LSN_PAGE, we
+          are not allowed to overwrite them with PAGECACHE_PLAIN_PAGE, so
+          throw them away. It is not losing data, because we just wrote and
+          forced an UNDO which will for sure empty the table if we crash. The
+          upcoming unique-key insertions however need a proper index, so we
+          cannot leave the corrupted on-disk index file, thus we truncate it.
+        */
+        maria_delete_all_rows(file);
+      }
+    }
+    else if (!file->bulk_insert &&
+             (!rows || rows >= MARIA_MIN_ROWS_TO_USE_BULK_INSERT))
+    {
+      maria_init_bulk_insert(file,
+                             (size_t) thd->variables.bulk_insert_buff_size,
+                             rows);
+    }
+  }
+  can_enable_indexes= index_disabled;
+  DBUG_VOID_RETURN;
+}
+
+
+/*
+  end special bulk-insert optimizations,
+  which have been activated by start_bulk_insert().
+
+  SYNOPSIS
+    end_bulk_insert()
+    no arguments
+
+  RETURN
+    0     OK
+    != 0  Error
+*/
+
+int ha_maria::end_bulk_insert()
+{
+  int first_error, error;
+  my_bool abort= file->s->deleting;
+  DBUG_ENTER("ha_maria::end_bulk_insert");
+
+  if ((first_error= maria_end_bulk_insert(file, abort)))
+    abort= 1;
+
+  if ((error= maria_extra(file, HA_EXTRA_NO_CACHE, 0)))
+  {
+    first_error= first_error ? first_error : error;
+    abort= 1;
+  }
+
+  if (!abort && can_enable_indexes)
+    if ((error= enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE)))
+      first_error= first_error ? first_error : error;
+
+  if (bulk_insert_single_undo != BULK_INSERT_NONE)
+  {
+    /*
+      Table was transactional just before start_bulk_insert().
+      No need to flush pages if we did a repair (which already flushed).
+    */
+    if ((error= _ma_reenable_logging_for_table(file,
+                                               bulk_insert_single_undo ==
+                                               BULK_INSERT_SINGLE_UNDO_AND_NO_REPAIR)))
+      first_error= first_error ? first_error : error;
+    bulk_insert_single_undo= BULK_INSERT_NONE;  // Safety
+  }
+  can_enable_indexes= 0;
+  DBUG_RETURN(first_error);
+}
+
+
+bool ha_maria::check_and_repair(THD *thd)
+{
+  int error, crashed;
+  HA_CHECK_OPT check_opt;
+  const CSET_STRING query_backup= thd->query_string;
+  DBUG_ENTER("ha_maria::check_and_repair");
+
+  check_opt.init();
+  check_opt.flags= T_MEDIUM | T_AUTO_REPAIR;
+
+  error= 1;
+  if (!aria_readonly &&
+      (file->s->state.changed & (STATE_CRASHED_FLAGS | STATE_MOVED)) ==
+      STATE_MOVED)
+  {
+    /* Remove error about crashed table */
+    thd->get_stmt_da()->clear_warning_info(thd->query_id);
+    push_warning_printf(thd, Sql_condition::WARN_LEVEL_NOTE,
+                        ER_CRASHED_ON_USAGE,
+                        "Zerofilling moved table %s", table->s->path.str);
+    sql_print_information("Zerofilling moved table:  '%s'",
+                          table->s->path.str);
+    if (!(error= zerofill(thd, &check_opt)))
+      DBUG_RETURN(0);
+  }
+
+  /*
+    if we got this far - the table is crashed.
+    but don't auto-repair if maria_recover_options is not set
+  */
+  if (!maria_recover_options)
+    DBUG_RETURN(error);
+
+  error= 0;
+  // Don't use quick if deleted rows
+  if (!file->state->del && (maria_recover_options & HA_RECOVER_QUICK))
+    check_opt.flags |= T_QUICK;
+
+  thd->set_query((char*) table->s->table_name.str,
+                 (uint) table->s->table_name.length, system_charset_info);
+
+  if (!(crashed= maria_is_crashed(file)))
+  {
+    sql_print_warning("Checking table:   '%s'", table->s->path.str);
+    crashed= check(thd, &check_opt);
+  }
+
+  if (crashed)
+  {
+    bool save_log_all_errors;
+    sql_print_warning("Recovering table: '%s'", table->s->path.str);
+    save_log_all_errors= thd->log_all_errors;
+    thd->log_all_errors|= (thd->variables.log_warnings > 2);
+    check_opt.flags=
+      ((maria_recover_options & HA_RECOVER_BACKUP ? T_BACKUP_DATA : 0) |
+       (maria_recover_options & HA_RECOVER_FORCE ? 0 : T_SAFE_REPAIR) |
+       T_AUTO_REPAIR);
+    if (repair(thd, &check_opt))
+      error= 1;
+    thd->log_all_errors= save_log_all_errors;
+  }
+  thd->set_query(query_backup);
+  DBUG_RETURN(error);
+}
+
+
+bool ha_maria::is_crashed() const
+{
+  return (file->s->state.changed & (STATE_CRASHED_FLAGS | STATE_MOVED) ||
+          (my_disable_locking && file->s->state.open_count));
+}
+
+#define CHECK_UNTIL_WE_FULLY_IMPLEMENTED_VERSIONING(msg) \
+  do { \
+    if (file->lock.type == TL_WRITE_CONCURRENT_INSERT && !table->s->sequence) \
+    { \
+      my_error(ER_CHECK_NOT_IMPLEMENTED, MYF(0), msg); \
+      return 1; \
+    } \
+  } while(0)
+
+int ha_maria::update_row(const uchar * old_data, const uchar * new_data)
+{
+  CHECK_UNTIL_WE_FULLY_IMPLEMENTED_VERSIONING("UPDATE in WRITE CONCURRENT");
+  return maria_update(file, old_data, new_data);
+}
+
+
+int ha_maria::delete_row(const uchar * buf)
+{
+  CHECK_UNTIL_WE_FULLY_IMPLEMENTED_VERSIONING("DELETE in WRITE CONCURRENT");
+  return maria_delete(file, buf);
+}
+
+int ha_maria::index_read_map(uchar * buf, const uchar * key,
+			     key_part_map keypart_map,
+			     enum ha_rkey_function find_flag)
+{
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  int error= maria_rkey(file, buf, active_index, key, keypart_map, find_flag);
+  return error;
+}
+
+
+int ha_maria::index_read_idx_map(uchar * buf, uint index, const uchar * key,
+				 key_part_map keypart_map,
+				 enum ha_rkey_function find_flag)
+{
+  int error;
+  register_handler(file);
+
+  /* Use the pushed index condition if it matches the index we're scanning */
+  end_range= NULL;
+  if (index == pushed_idx_cond_keyno)
+    ma_set_index_cond_func(file, handler_index_cond_check, this);
+
+  error= maria_rkey(file, buf, index, key, keypart_map, find_flag);
+
+  ma_set_index_cond_func(file, NULL, 0);
+  return error;
+}
+
+
+int ha_maria::index_read_last_map(uchar * buf, const uchar * key,
+				  key_part_map keypart_map)
+{
+  DBUG_ENTER("ha_maria::index_read_last_map");
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  int error= maria_rkey(file, buf, active_index, key, keypart_map,
+                        HA_READ_PREFIX_LAST);
+  DBUG_RETURN(error);
+}
+
+
+int ha_maria::index_next(uchar * buf)
+{
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  int error= maria_rnext(file, buf, active_index);
+  return error;
+}
+
+
+int ha_maria::index_prev(uchar * buf)
+{
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  int error= maria_rprev(file, buf, active_index);
+  return error;
+}
+
+
+int ha_maria::index_first(uchar * buf)
+{
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  int error= maria_rfirst(file, buf, active_index);
+  return error;
+}
+
+
+int ha_maria::index_last(uchar * buf)
+{
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  int error= maria_rlast(file, buf, active_index);
+  return error;
+}
+
+
+int ha_maria::index_next_same(uchar * buf,
+                              const uchar *key __attribute__ ((unused)),
+                              uint length __attribute__ ((unused)))
+{
+  int error;
+  DBUG_ASSERT(inited == INDEX);
+  register_handler(file);
+  /*
+    TODO: Delete this loop in Maria 1.5 as versioning will ensure this never
+    happens
+  */
+  do
+  {
+    error= maria_rnext_same(file,buf);
+  } while (error == HA_ERR_RECORD_DELETED);
+  return error;
+}
+
+
+int ha_maria::index_init(uint idx, bool sorted)
+{
+  active_index=idx;
+  if (pushed_idx_cond_keyno == idx)
+    ma_set_index_cond_func(file, handler_index_cond_check, this);
+  return 0;
+}
+
+
+int ha_maria::index_end()
+{
+  active_index=MAX_KEY;
+  ma_set_index_cond_func(file, NULL, 0);
+  in_range_check_pushed_down= FALSE;
+  ds_mrr.dsmrr_close();
+  return 0;
+}
+
+
+int ha_maria::rnd_init(bool scan)
+{
+  if (scan)
+    return maria_scan_init(file);
+  return maria_reset(file);                        // Free buffers
+}
+
+
+int ha_maria::rnd_end()
+{
+  ds_mrr.dsmrr_close();
+  /* Safe to call even if we don't have started a scan */
+  maria_scan_end(file);
+  return 0;
+}
+
+
+int ha_maria::rnd_next(uchar *buf)
+{
+  register_handler(file);
+  return maria_scan(file, buf);
+}
+
+
+int ha_maria::remember_rnd_pos()
+{
+  register_handler(file);
+  return (*file->s->scan_remember_pos)(file, &remember_pos);
+}
+
+
+int ha_maria::restart_rnd_next(uchar *buf)
+{
+  int error;
+  register_handler(file);
+  if ((error= (*file->s->scan_restore_pos)(file, remember_pos)))
+    return error;
+  return rnd_next(buf);
+}
+
+
+int ha_maria::rnd_pos(uchar *buf, uchar *pos)
+{
+  register_handler(file);
+  int error= maria_rrnd(file, buf, my_get_ptr(pos, ref_length));
+  return error;
+}
+
+
+void ha_maria::position(const uchar *record)
+{
+  my_off_t row_position= maria_position(file);
+  my_store_ptr(ref, ref_length, row_position);
+}
+
+
+int ha_maria::info(uint flag)
+{
+  MARIA_INFO maria_info;
+  char name_buff[FN_REFLEN];
+
+  (void) maria_status(file, &maria_info, flag);
+  if (flag & HA_STATUS_VARIABLE)
+  {
+    stats.records=           maria_info.records;
+    stats.deleted=           maria_info.deleted;
+    stats.data_file_length=  maria_info.data_file_length;
+    stats.index_file_length= maria_info.index_file_length;
+    stats.delete_length=     maria_info.delete_length;
+    stats.check_time=        maria_info.check_time;
+    stats.mean_rec_length=   maria_info.mean_reclength;
+    stats.checksum=          file->state->checksum;
+  }
+  if (flag & HA_STATUS_CONST)
+  {
+    TABLE_SHARE *share= table->s;
+    stats.max_data_file_length=  maria_info.max_data_file_length;
+    stats.max_index_file_length= maria_info.max_index_file_length;
+    stats.create_time= maria_info.create_time;
+    ref_length= maria_info.reflength;
+    share->db_options_in_use= maria_info.options;
+    stats.block_size= maria_block_size;
+    stats.mrr_length_per_rec= maria_info.reflength + 8; // 8 = MY_MAX(sizeof(void *))
+
+    /* Update share */
+    share->keys_in_use.set_prefix(share->keys);
+    share->keys_in_use.intersect_extended(maria_info.key_map);
+    share->keys_for_keyread.intersect(share->keys_in_use);
+    share->db_record_offset= maria_info.record_offset;
+    if (share->key_parts)
+    {
+      ulong *to= table->key_info[0].rec_per_key, *end;
+      double *from= maria_info.rec_per_key;
+      for (end= to+ share->key_parts ; to < end ; to++, from++)
+        *to= (ulong) (*from + 0.5);
+    }
+
+    /*
+       Set data_file_name and index_file_name to point at the symlink value
+       if table is symlinked (Ie;  Real name is not same as generated name)
+    */
+    data_file_name= index_file_name= 0;
+    fn_format(name_buff, file->s->open_file_name.str, "", MARIA_NAME_DEXT,
+              MY_APPEND_EXT | MY_UNPACK_FILENAME);
+    if (strcmp(name_buff, maria_info.data_file_name) &&
+        maria_info.data_file_name[0])
+      data_file_name= maria_info.data_file_name;
+    fn_format(name_buff, file->s->open_file_name.str, "", MARIA_NAME_IEXT,
+              MY_APPEND_EXT | MY_UNPACK_FILENAME);
+    if (strcmp(name_buff, maria_info.index_file_name) &&
+        maria_info.index_file_name[0])
+      index_file_name=maria_info.index_file_name;
+  }
+  if (flag & HA_STATUS_ERRKEY)
+  {
+    errkey= maria_info.errkey;
+    my_store_ptr(dup_ref, ref_length, maria_info.dup_key_pos);
+  }
+  if (flag & HA_STATUS_TIME)
+    stats.update_time= maria_info.update_time;
+  if (flag & HA_STATUS_AUTO)
+    stats.auto_increment_value= maria_info.auto_increment;
+
+  return 0;
+}
+
+
+int ha_maria::extra(enum ha_extra_function operation)
+{
+  int tmp;
+  TRN *old_trn= file->trn;
+  if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_KEYREAD)
+    return 0;
+#ifdef NOT_USED
+  if (operation == HA_EXTRA_MMAP && !opt_maria_use_mmap)
+    return 0;
+#endif
+  if (operation == HA_EXTRA_WRITE_CACHE && has_long_unique())
+    return 0;
+
+  /*
+    We have to set file->trn here because in some cases we call
+    extern_lock(F_UNLOCK) (which resets file->trn) followed by maria_close()
+    without calling commit/rollback in between.  If file->trn is not set
+    we can't remove file->share from the transaction list in the extra() call.
+
+    In current code we don't have to do this for HA_EXTRA_PREPARE_FOR_RENAME
+    as this is only used the intermediate table used by ALTER TABLE which
+    is not part of the transaction (it's not in the TRN list). Better to
+    keep this for now, to not break anything in a stable release.
+    When HA_EXTRA_PREPARE_FOR_RENAME is not handled below, we can change
+    the warnings in _ma_remove_table_from_trnman() to asserts.
+
+    table->in_use is not set in the case this is a done as part of closefrm()
+    as part of drop table.
+  */
+
+  if (file->s->now_transactional && table->in_use &&
+      (operation == HA_EXTRA_PREPARE_FOR_DROP ||
+       operation == HA_EXTRA_PREPARE_FOR_RENAME ||
+       operation == HA_EXTRA_PREPARE_FOR_FORCED_CLOSE))
+  {
+    THD *thd= table->in_use;
+    file->trn= THD_TRN;
+  }
+  DBUG_ASSERT(file->s->base.born_transactional || file->trn == 0 ||
+              file->trn == &dummy_transaction_object);
+
+  tmp= maria_extra(file, operation, 0);
+  /*
+    Restore trn if it was changed above.
+    Note that table could be removed from trn->used_tables and
+    trn->used_instances if trn was set and some of the above operations
+    was used. This is ok as the table should not be part of any transaction
+    after this and thus doesn't need to be part of any of the above lists.
+  */
+  file->trn= old_trn;
+  return tmp;
+}
+
+int ha_maria::reset(void)
+{
+  ma_set_index_cond_func(file, NULL, 0);
+  ds_mrr.dsmrr_close();
+  if (file->trn)
+  {
+    /* Next statement is a new statement. Ensure it's logged */
+    trnman_set_flags(file->trn,
+                     trnman_get_flags(file->trn) & ~TRN_STATE_INFO_LOGGED);
+  }
+  return maria_reset(file);
+}
+
+/* To be used with WRITE_CACHE and EXTRA_CACHE */
+
+int ha_maria::extra_opt(enum ha_extra_function operation, ulong cache_size)
+{
+  if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_WRITE_CACHE)
+    return 0;
+  return maria_extra(file, operation, (void*) &cache_size);
+}
+
+
+bool ha_maria::auto_repair(int error) const
+{
+  /* Always auto-repair moved tables (error == HA_ERR_OLD_FILE) */
+  return ((MY_TEST(maria_recover_options & HA_RECOVER_ANY) &&
+           error == HA_ERR_CRASHED_ON_USAGE) ||
+          error == HA_ERR_OLD_FILE);
+
+}
+
+
+int ha_maria::delete_all_rows()
+{
+  THD *thd= table->in_use;
+  TRN *trn= file->trn;
+  CHECK_UNTIL_WE_FULLY_IMPLEMENTED_VERSIONING("TRUNCATE in WRITE CONCURRENT");
+#ifdef EXTRA_DEBUG
+  if (trn && ! (trnman_get_flags(trn) & TRN_STATE_INFO_LOGGED))
+  {
+    trnman_set_flags(trn, trnman_get_flags(trn) | TRN_STATE_INFO_LOGGED |
+                     TRN_STATE_TABLES_CAN_CHANGE);
+    (void) translog_log_debug_info(trn, LOGREC_DEBUG_INFO_QUERY,
+                                   (uchar*) thd->query(), thd->query_length());
+  }
+#endif
+  /*
+    If we are under LOCK TABLES, we have to do a commit as
+    delete_all_rows() can't be rolled back
+  */
+  if (table->in_use->locked_tables_mode && trn &&
+      trnman_has_locked_tables(trn))
+  {
+    int error;
+    if ((error= implicit_commit(thd, 1)))
+      return error;
+  }
+
+  /* Note that this can't be rolled back */
+  return maria_delete_all_rows(file);
+}
+
+
+int ha_maria::delete_table(const char *name)
+{
+  THD *thd= current_thd;
+  (void) translog_log_debug_info(0, LOGREC_DEBUG_INFO_QUERY,
+                                 (uchar*) thd->query(), thd->query_length());
+  return maria_delete_table(name);
+}
+
+
+/* This is mainly for temporary tables, so no logging necessary */
+
+void ha_maria::drop_table(const char *name)
+{
+  DBUG_ASSERT(file->s->temporary);
+  (void) ha_close();
+  (void) maria_delete_table_files(name, 1, MY_WME);
+}
+
+
+void ha_maria::change_table_ptr(TABLE *table_arg, TABLE_SHARE *share)
+{
+  handler::change_table_ptr(table_arg, share);
+  if (file)
+    file->external_ref= table_arg;
+}
+
+
+int ha_maria::external_lock(THD *thd, int lock_type)
+{
+  int result= 0, result2;
+  DBUG_ENTER("ha_maria::external_lock");
+  file->external_ref= (void*) table;            // For ma_killed()
+  /*
+    We don't test now_transactional because it may vary between lock/unlock
+    and thus confuse our reference counting.
+    It is critical to skip non-transactional tables: user-visible temporary
+    tables get an external_lock() when read/written for the first time, but no
+    corresponding unlock (they just stay locked and are later dropped while
+    locked); if a tmp table was transactional, "SELECT FROM non_tmp, tmp"
+    would never commit as its "locked_tables" count would stay 1.
+    When Maria has has_transactions()==TRUE, open_temporary_table()
+    (sql_base.cc) will use TRANSACTIONAL_TMP_TABLE and thus the
+    external_lock(F_UNLCK) will happen and we can then allow the user to
+    create transactional temporary tables.
+  */
+  if (file->s->base.born_transactional)
+  {
+    /* Transactional table */
+    if (lock_type != F_UNLCK)
+    {
+      if (file->trn)
+      {
+        /* This can only happen with tables created with clone() */
+        DBUG_PRINT("info",("file->trn: %p", file->trn));
+        trnman_increment_locked_tables(file->trn);
+      }
+
+      if (!thd->transaction->on)
+      {
+        /*
+          No need to log REDOs/UNDOs. If this is an internal temporary table
+          which will be renamed to a permanent table (like in ALTER TABLE),
+          the rename happens after unlocking so will be durable (and the table
+          will get its create_rename_lsn).
+          Note: if we wanted to enable users to have an old backup and apply
+          tons of archived logs to roll-forward, we could then not disable
+          REDOs/UNDOs in this case.
+        */
+        DBUG_PRINT("info", ("Disabling logging for table"));
+        _ma_tmp_disable_logging_for_table(file, TRUE);
+        file->autocommit= 0;
+      }
+      else
+        file->autocommit= !(thd->variables.option_bits &
+                            (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN));
+#ifndef ARIA_HAS_TRANSACTIONS
+      /*
+        Until Aria has full transactions support, including MVCC support for
+        delete and update and purging of old states, we have to commit for
+        every statement.
+      */
+      file->autocommit=1;
+#endif
+    }
+    else
+    {
+      /* We have to test for THD_TRN to protect against implicit commits */
+      TRN *trn= (file->trn != &dummy_transaction_object && THD_TRN ? file->trn : 0);
+      /* End of transaction */
+
+      /*
+        We always re-enable, don't rely on thd->transaction.on as it is
+        sometimes reset to true after unlocking (see mysql_truncate() for a
+        partitioned table based on Maria).
+        Note that we can come here without having an exclusive lock on the
+        table, for example in this case:
+        external_lock(F_(WR|RD)LCK); thr_lock() which fails due to lock
+        abortion; external_lock(F_UNLCK). Fortunately, the re-enabling happens
+        only if we were the thread which disabled logging.
+      */
+      if (_ma_reenable_logging_for_table(file, TRUE))
+        DBUG_RETURN(1);
+      _ma_reset_trn_for_table(file);
+      /*
+        Ensure that file->state points to the current number of rows. This
+        is needed if someone calls maria_info() without first doing an
+        external lock of the table
+      */
+      file->state= &file->s->state.state;
+      if (trn)
+      {
+        DBUG_PRINT("info",
+                   ("locked_tables: %u", trnman_has_locked_tables(trn)));
+        DBUG_ASSERT(trnman_has_locked_tables(trn) > 0);
+        if (trnman_has_locked_tables(trn) &&
+            !trnman_decrement_locked_tables(trn))
+        {
+          /*
+            OK should not have been sent to client yet (ACID).
+            This is a bit excessive, ACID requires this only if there are some
+            changes to commit (rollback shouldn't be tested).
+          */
+          DBUG_ASSERT(!thd->get_stmt_da()->is_sent() ||
+                      thd->killed);
+          /*
+            If autocommit, commit transaction. This can happen when open and
+            lock tables as part of creating triggers, in which case commit
+            is not called.
+            Until ARIA_HAS_TRANSACTIONS is not defined, always commit.
+          */
+          if (file->autocommit)
+          {
+            if (ma_commit(trn))
+              result= HA_ERR_INTERNAL_ERROR;
+            thd_set_ha_data(thd, maria_hton, 0);
+          }
+        }
+        trnman_set_flags(trn, trnman_get_flags(trn) & ~ TRN_STATE_INFO_LOGGED);
+      }
+    }
+  } /* if transactional table */
+  if ((result2= maria_lock_database(file, !table->s->tmp_table ?
+                                    lock_type : ((lock_type == F_UNLCK) ?
+                                                 F_UNLCK : F_EXTRA_LCK))))
+    result= result2;
+  if (!file->s->base.born_transactional)
+    file->state= &file->s->state.state;         // Restore state if clone
+
+  /* Remember stack end for this thread */
+  file->stack_end_ptr= &ha_thd()->mysys_var->stack_ends_here;
+  DBUG_RETURN(result);
+}
+
+int ha_maria::start_stmt(THD *thd, thr_lock_type lock_type)
+{
+  TRN *trn;
+  if (file->s->base.born_transactional)
+  {
+    trn= THD_TRN;
+    DBUG_ASSERT(trn); // this may be called only after external_lock()
+    DBUG_ASSERT(trnman_has_locked_tables(trn));
+    DBUG_ASSERT(lock_type != TL_UNLOCK);
+    DBUG_ASSERT(file->trn == trn);
+
+    /*
+      As external_lock() was already called, don't increment locked_tables.
+      Note that we call the function below possibly several times when
+      statement starts (once per table). This is ok as long as that function
+      does cheap operations. Otherwise, we will need to do it only on first
+      call to start_stmt().
+    */
+    trnman_new_statement(trn);
+
+#ifdef EXTRA_DEBUG
+    if (!(trnman_get_flags(trn) & TRN_STATE_INFO_LOGGED) &&
+        trnman_get_flags(trn) & TRN_STATE_TABLES_CAN_CHANGE)
+    {
+      trnman_set_flags(trn, trnman_get_flags(trn) | TRN_STATE_INFO_LOGGED);
+      (void) translog_log_debug_info(trn, LOGREC_DEBUG_INFO_QUERY,
+                                     (uchar*) thd->query(),
+                                     thd->query_length());
+    }
+#endif
+  }
+  return 0;
+}
+
+
+/*
+  Reset THD_TRN and all file->trn related to the transaction
+  This is needed as some calls, like extra() or external_lock() may access
+  it before next transaction is started
+*/
+
+static void reset_thd_trn(THD *thd, MARIA_HA *first_table)
+{
+  DBUG_ENTER("reset_thd_trn");
+  thd_set_ha_data(thd, maria_hton, 0);
+  MARIA_HA *next;
+  for (MARIA_HA *table= first_table; table ; table= next)
+  {
+    next= table->trn_next;
+    _ma_reset_trn_for_table(table);
+
+    /*
+      If table has changed by this statement, invalidate it from the query
+      cache
+    */
+    if (table->row_changes != table->start_row_changes)
+    {
+      table->start_row_changes= table->row_changes;
+      DBUG_ASSERT(table->s->chst_invalidator != NULL);
+      (*table->s->chst_invalidator)(table->s->data_file_name.str);
+    }
+  }
+  DBUG_VOID_RETURN;
+}
+
+bool ha_maria::has_active_transaction(THD *thd)
+{
+  return (maria_hton && THD_TRN);
+}
+
+/**
+  Performs an implicit commit of the Maria transaction and creates a new
+  one.
+
+  This can be considered a hack. When Maria loses HA_NO_TRANSACTIONS it will
+  be participant in the connection's transaction and so the implicit commits
+  (ha_commit()) (like in end_active_trans()) will do the implicit commit
+  without need to call this function which can then be removed.
+
+  @param  thd              THD object
+  @param  new_trn          if a new transaction should be created; a new
+                           transaction is not needed when we know that the
+                           tables will be unlocked very soon.
+*/
+
+int ha_maria::implicit_commit(THD *thd, bool new_trn)
+{
+#ifndef MARIA_CANNOT_ROLLBACK
+#error this method should be removed
+#endif
+  TRN *trn;
+  int error;
+  uint locked_tables;
+  extern my_bool plugins_are_initialized;
+  MARIA_HA *used_tables, *trn_next;
+  DBUG_ENTER("ha_maria::implicit_commit");
+
+  if (!maria_hton || !plugins_are_initialized || !(trn= THD_TRN))
+    DBUG_RETURN(0);
+  if (!new_trn && (thd->locked_tables_mode == LTM_LOCK_TABLES ||
+                   thd->locked_tables_mode == LTM_PRELOCKED_UNDER_LOCK_TABLES))
+  {
+    /*
+      No commit inside LOCK TABLES.
+
+      Note that we come here only at the end of the top statement
+      (dispatch_command()), we are never committing inside a sub-statement./
+    */
+    DBUG_PRINT("info", ("locked_tables, skipping"));
+    DBUG_RETURN(0);
+  }
+
+  /* Prepare to move used_instances and locked tables to new TRN object */
+  locked_tables= trnman_has_locked_tables(trn);
+  trnman_reset_locked_tables(trn, 0);
+  relink_trn_used_instances(&used_tables, trn);
+
+  error= 0;
+  if (unlikely(ma_commit(trn)))
+    error= 1;
+  if (!new_trn)
+  {
+    reset_thd_trn(thd, used_tables);
+    goto end;
+  }
+
+  /*
+    We need to create a new transaction and put it in THD_TRN. Indeed,
+    tables may be under LOCK TABLES, and so they will start the next
+    statement assuming they have a trn (see ha_maria::start_stmt()).
+  */
+  trn= trnman_new_trn(& thd->transaction->wt);
+  thd_set_ha_data(thd, maria_hton, trn);
+  if (unlikely(trn == NULL))
+  {
+    reset_thd_trn(thd, used_tables);
+    error= HA_ERR_OUT_OF_MEM;
+    goto end;
+  }
+  /*
+    Move all locked tables to the new transaction
+    We must do it here as otherwise file->thd and file->state may be
+    stale pointers. We can't do this in start_stmt() as we don't know
+    when we should call _ma_setup_live_state() and in some cases, like
+    in check table, we use the table without calling start_stmt().
+  */
+
+  for (MARIA_HA *handler= used_tables; handler ;
+       handler= trn_next)
+  {
+    trn_next= handler->trn_next;
+    DBUG_ASSERT(handler->s->base.born_transactional);
+
+    /* If handler uses versioning */
+    if (handler->s->lock_key_trees)
+    {
+      /* _ma_set_trn_for_table() will be called indirectly */
+      if (_ma_setup_live_state(handler))
+        error= HA_ERR_OUT_OF_MEM;
+    }
+    else
+      _ma_set_trn_for_table(handler, trn);
+  }
+  /* This is just a commit, tables stay locked if they were: */
+  trnman_reset_locked_tables(trn, locked_tables);
+
+end:
+  DBUG_RETURN(error);
+}
+
+
+THR_LOCK_DATA **ha_maria::store_lock(THD *thd,
+                                     THR_LOCK_DATA **to,
+                                     enum thr_lock_type lock_type)
+{
+  /* Test if we can fix test below */
+  DBUG_ASSERT(lock_type != TL_UNLOCK &&
+              (lock_type == TL_IGNORE || file->lock.type == TL_UNLOCK));
+  if (lock_type != TL_IGNORE && file->lock.type == TL_UNLOCK)
+  {
+    const enum enum_sql_command sql_command= thd->lex->sql_command;
+    /*
+      We have to disable concurrent inserts for INSERT ... SELECT or
+      INSERT/UPDATE/DELETE with sub queries if we are using statement based
+      logging.  We take the safe route here and disable this for all commands
+      that only does reading that are not SELECT.
+    */
+    if (lock_type <= TL_READ_HIGH_PRIORITY &&
+        !thd->is_current_stmt_binlog_format_row() &&
+        (sql_command != SQLCOM_SELECT &&
+         sql_command != SQLCOM_LOCK_TABLES) &&
+        (thd->variables.option_bits & OPTION_BIN_LOG) &&
+        mysql_bin_log.is_open())
+      lock_type= TL_READ_NO_INSERT;
+    else if (lock_type == TL_WRITE_CONCURRENT_INSERT)
+    {
+      const enum enum_duplicates duplicates= thd->lex->duplicates;
+      /*
+        Explanation for the 3 conditions below, in order:
+
+        - Bulk insert may use repair, which will cause problems if other
+        threads try to read/insert to the table: disable versioning.
+        Note that our read of file->state->records is incorrect, as such
+        variable may have changed when we come to start_bulk_insert() (worse
+        case: we see != 0 so allow versioning, start_bulk_insert() sees 0 and
+        uses repair). This is prevented because start_bulk_insert() will not
+        try repair if we enabled versioning.
+        - INSERT SELECT ON DUPLICATE KEY UPDATE comes here with
+        TL_WRITE_CONCURRENT_INSERT but shouldn't because it can do
+        update/delete of a row and versioning doesn't support that
+        - same for LOAD DATA CONCURRENT REPLACE.
+      */
+      if ((file->state->records == 0) ||
+          (sql_command == SQLCOM_INSERT_SELECT && duplicates == DUP_UPDATE) ||
+          (sql_command == SQLCOM_LOAD && duplicates == DUP_REPLACE))
+        lock_type= TL_WRITE;
+    }
+    file->lock.type= lock_type;
+  }
+  *to++= &file->lock;
+  return to;
+}
+
+
+void ha_maria::update_create_info(HA_CREATE_INFO *create_info)
+{
+  ha_maria::info(HA_STATUS_AUTO | HA_STATUS_CONST);
+  if (!(create_info->used_fields & HA_CREATE_USED_AUTO))
+  {
+    create_info->auto_increment_value= stats.auto_increment_value;
+  }
+  create_info->data_file_name= data_file_name;
+  create_info->index_file_name= index_file_name;
+  /*
+    Keep user-specified row_type for ALTER,
+    but show the actually used one in SHOW
+  */
+  if (create_info->row_type != ROW_TYPE_DEFAULT &&
+      !(thd_sql_command(ha_thd()) == SQLCOM_ALTER_TABLE))
+    create_info->row_type= get_row_type();
+  /*
+    Show always page checksums, as this can be forced with
+    maria_page_checksums variable
+  */
+  if (create_info->page_checksum == HA_CHOICE_UNDEF)
+    create_info->page_checksum=
+      (file->s->options & HA_OPTION_PAGE_CHECKSUM) ? HA_CHOICE_YES :
+      HA_CHOICE_NO;
+}
+
+
+enum row_type ha_maria::get_row_type() const
+{
+  switch (file->s->data_file_type) {
+  case STATIC_RECORD:     return ROW_TYPE_FIXED;
+  case DYNAMIC_RECORD:    return ROW_TYPE_DYNAMIC;
+  case BLOCK_RECORD:      return ROW_TYPE_PAGE;
+  case COMPRESSED_RECORD: return ROW_TYPE_COMPRESSED;
+  default:                return ROW_TYPE_NOT_USED;
+  }
+}
+
+
+static enum data_file_type maria_row_type(HA_CREATE_INFO *info)
+{
+  if (info->transactional == HA_CHOICE_YES)
+    return BLOCK_RECORD;
+  switch (info->row_type) {
+  case ROW_TYPE_FIXED:   return STATIC_RECORD;
+  case ROW_TYPE_DYNAMIC: return DYNAMIC_RECORD;
+  default:               return BLOCK_RECORD;
+  }
+}
+
+
+int ha_maria::create(const char *name, TABLE *table_arg,
+                     HA_CREATE_INFO *ha_create_info)
+{
+  int error;
+  uint create_flags= 0, record_count= 0, i;
+  char buff[FN_REFLEN];
+  MARIA_KEYDEF *keydef;
+  MARIA_COLUMNDEF *recinfo;
+  MARIA_CREATE_INFO create_info;
+  TABLE_SHARE *share= table_arg->s;
+  uint options= share->db_options_in_use;
+  ha_table_option_struct *table_options= table_arg->s->option_struct;
+  enum data_file_type row_type;
+  THD *thd= current_thd;
+  DBUG_ENTER("ha_maria::create");
+
+  for (i= 0; i < share->keys; i++)
+  {
+    if (table_arg->key_info[i].flags & HA_USES_PARSER)
+    {
+      create_flags|= HA_CREATE_RELIES_ON_SQL_LAYER;
+      break;
+    }
+  }
+  /* Note: BLOCK_RECORD is used if table is transactional */
+  row_type= maria_row_type(ha_create_info);
+  if (ha_create_info->transactional == HA_CHOICE_YES &&
+      ha_create_info->row_type != ROW_TYPE_PAGE &&
+      ha_create_info->row_type != ROW_TYPE_NOT_USED &&
+      ha_create_info->row_type != ROW_TYPE_DEFAULT)
+    push_warning(thd, Sql_condition::WARN_LEVEL_NOTE,
+                 ER_ILLEGAL_HA_CREATE_OPTION,
+                 "Row format set to PAGE because of TRANSACTIONAL=1 option");
+
+  if (share->table_type == TABLE_TYPE_SEQUENCE)
+  {
+    /* For sequences, the simples record type is appropriate */
+    row_type= STATIC_RECORD;
+    ha_create_info->transactional= HA_CHOICE_NO;
+  }
+
+  bzero((char*) &create_info, sizeof(create_info));
+  if ((error= table2maria(table_arg, row_type, &keydef, &recinfo,
+                          &record_count, &create_info)))
+    DBUG_RETURN(error); /* purecov: inspected */
+  create_info.max_rows= share->max_rows;
+  create_info.reloc_rows= share->min_rows;
+  create_info.with_auto_increment= share->next_number_key_offset == 0;
+  create_info.auto_increment= (ha_create_info->auto_increment_value ?
+                               ha_create_info->auto_increment_value -1 :
+                               (ulonglong) 0);
+  create_info.data_file_length= ((ulonglong) share->max_rows *
+                                 share->avg_row_length);
+  create_info.data_file_name= ha_create_info->data_file_name;
+  create_info.index_file_name= ha_create_info->index_file_name;
+  create_info.language= share->table_charset->number;
+  if (ht != maria_hton)
+  {
+    /* S3 engine */
+    create_info.s3_block_size= (ulong) table_options->s3_block_size;
+    create_info.compression_algorithm= table_options->compression_algorithm;
+  }
+
+  /*
+    Table is transactional:
+    - If the user specify that table is transactional (in this case
+      row type is forced to BLOCK_RECORD)
+    - If they specify BLOCK_RECORD without specifying transactional behaviour
+
+    Shouldn't this test be pushed down to maria_create()? Because currently,
+    ma_test1 -T crashes: it creates a table with DYNAMIC_RECORD but has
+    born_transactional==1, which confuses some recovery-related code.
+  */
+  create_info.transactional= (row_type == BLOCK_RECORD &&
+                              ha_create_info->transactional != HA_CHOICE_NO);
+
+  if (ha_create_info->tmp_table())
+  {
+    create_flags|= HA_CREATE_TMP_TABLE | HA_CREATE_DELAY_KEY_WRITE;
+    create_info.transactional= 0;
+  }
+  if (ha_create_info->options & HA_CREATE_KEEP_FILES)
+    create_flags|= HA_CREATE_KEEP_FILES;
+  if (options & HA_OPTION_PACK_RECORD)
+    create_flags|= HA_PACK_RECORD;
+  if (options & HA_OPTION_CHECKSUM)
+    create_flags|= HA_CREATE_CHECKSUM;
+  if (options & HA_OPTION_DELAY_KEY_WRITE)
+    create_flags|= HA_CREATE_DELAY_KEY_WRITE;
+  if ((ha_create_info->page_checksum == HA_CHOICE_UNDEF &&
+       maria_page_checksums) ||
+       ha_create_info->page_checksum ==  HA_CHOICE_YES)
+    create_flags|= HA_CREATE_PAGE_CHECKSUM;
+
+  (void) translog_log_debug_info(0, LOGREC_DEBUG_INFO_QUERY,
+                                 (uchar*) thd->query(), thd->query_length());
+
+  create_info.encrypted= maria_encrypt_tables && ht == maria_hton;
+  /* TODO: Check that the following fn_format is really needed */
+  error=
+    maria_create(fn_format(buff, name, "", "",
+                           MY_UNPACK_FILENAME | MY_APPEND_EXT),
+                 row_type, share->keys, keydef,
+                 record_count,  recinfo,
+                 0, (MARIA_UNIQUEDEF *) 0,
+                 &create_info, create_flags);
+
+  my_free(recinfo);
+  DBUG_RETURN(error);
+}
+
+
+int ha_maria::rename_table(const char *from, const char *to)
+{
+  THD *thd= current_thd;
+  (void) translog_log_debug_info(0, LOGREC_DEBUG_INFO_QUERY,
+                                 (uchar*) thd->query(), thd->query_length());
+  return maria_rename(from, to);
+}
+
+
+void ha_maria::get_auto_increment(ulonglong offset, ulonglong increment,
+                                  ulonglong nb_desired_values,
+                                  ulonglong *first_value,
+                                  ulonglong *nb_reserved_values)
+{
+  ulonglong nr;
+  int error;
+  uchar key[MARIA_MAX_KEY_BUFF];
+
+  if (!table->s->next_number_key_offset)
+  {                                             // Autoincrement at key-start
+    ha_maria::info(HA_STATUS_AUTO);
+    *first_value= stats.auto_increment_value;
+    /* Maria has only table-level lock for now, so reserves to +inf */
+    *nb_reserved_values= ULONGLONG_MAX;
+    return;
+  }
+
+  /* it's safe to call the following if bulk_insert isn't on */
+  maria_flush_bulk_insert(file, table->s->next_number_index);
+
+  (void) extra(HA_EXTRA_KEYREAD);
+  key_copy(key, table->record[0],
+           table->key_info + table->s->next_number_index,
+           table->s->next_number_key_offset);
+  error= maria_rkey(file, table->record[1], (int) table->s->next_number_index,
+                    key, make_prev_keypart_map(table->s->next_number_keypart),
+                    HA_READ_PREFIX_LAST);
+  if (error)
+    nr= 1;
+  else
+  {
+    /* Get data from record[1] */
+    nr= ((ulonglong) table->next_number_field->
+         val_int_offset(table->s->rec_buff_length) + 1);
+  }
+  extra(HA_EXTRA_NO_KEYREAD);
+  *first_value= nr;
+  /*
+    MySQL needs to call us for next row: assume we are inserting ("a",null)
+    here, we return 3, and next this statement will want to insert ("b",null):
+    there is no reason why ("b",3+1) would be the good row to insert: maybe it
+    already exists, maybe 3+1 is too large...
+  */
+  *nb_reserved_values= 1;
+}
+
+
+/*
+  Find out how many rows there is in the given range
+
+  SYNOPSIS
+    records_in_range()
+    inx                 Index to use
+    min_key             Start of range.  Null pointer if from first key
+    max_key             End of range. Null pointer if to last key
+    pages               Store first and last page for the range in case of
+                        b-trees. In other cases it's not touched.
+
+  NOTES
+    min_key.flag can have one of the following values:
+      HA_READ_KEY_EXACT         Include the key in the range
+      HA_READ_AFTER_KEY         Don't include key in range
+
+    max_key.flag can have one of the following values:
+      HA_READ_BEFORE_KEY        Don't include key in range
+      HA_READ_AFTER_KEY         Include all 'end_key' values in the range
+
+  RETURN
+   HA_POS_ERROR         Something is wrong with the index tree.
+   0                    There is no matching keys in the given range
+   number > 0           There is approximately 'number' matching rows in
+                        the range.
+*/
+
+ha_rows ha_maria::records_in_range(uint inx, const key_range *min_key,
+                                   const key_range *max_key, page_range *pages)
+{
+  register_handler(file);
+  return (ha_rows) maria_records_in_range(file, (int) inx, min_key, max_key,
+                                          pages);
+}
+
+
+FT_INFO *ha_maria::ft_init_ext(uint flags, uint inx, String * key)
+{
+  return maria_ft_init_search(flags, file, inx,
+                              (uchar *) key->ptr(), key->length(),
+                              key->charset(), table->record[0]);
+}
+
+
+int ha_maria::ft_read(uchar * buf)
+{
+  int error;
+
+  if (!ft_handler)
+    return -1;
+
+  register_handler(file);
+
+  thread_safe_increment(table->in_use->status_var.ha_read_next_count,
+                        &LOCK_status);  // why ?
+
+  error= ft_handler->please->read_next(ft_handler, (char*) buf);
+
+  return error;
+}
+
+
+bool ha_maria::check_if_incompatible_data(HA_CREATE_INFO *create_info,
+                                          uint table_changes)
+{
+  DBUG_ENTER("check_if_incompatible_data");
+  uint options= table->s->db_options_in_use;
+  enum ha_choice page_checksum= table->s->page_checksum;
+
+  if (page_checksum == HA_CHOICE_UNDEF)
+    page_checksum= file->s->options & HA_OPTION_PAGE_CHECKSUM ? HA_CHOICE_YES
+                                                              : HA_CHOICE_NO;
+
+  if (create_info->auto_increment_value != stats.auto_increment_value ||
+      create_info->data_file_name != data_file_name ||
+      create_info->index_file_name != index_file_name ||
+      create_info->page_checksum != page_checksum ||
+      create_info->transactional != table->s->transactional ||
+      (maria_row_type(create_info) != data_file_type &&
+       create_info->row_type != ROW_TYPE_DEFAULT) ||
+      table_changes == IS_EQUAL_NO ||
+      (table_changes & IS_EQUAL_PACK_LENGTH)) // Not implemented yet
+    DBUG_RETURN(COMPATIBLE_DATA_NO);
+
+  if ((options & (HA_OPTION_CHECKSUM |
+                  HA_OPTION_DELAY_KEY_WRITE)) !=
+      (create_info->table_options & (HA_OPTION_CHECKSUM |
+                              HA_OPTION_DELAY_KEY_WRITE)))
+    DBUG_RETURN(COMPATIBLE_DATA_NO);
+  DBUG_RETURN(COMPATIBLE_DATA_YES);
+}
+
+
+static int maria_hton_panic(handlerton *hton, ha_panic_function flag)
+{
+  /* If no background checkpoints, we need to do one now */
+  int ret=0;
+
+  if (!checkpoint_interval && !aria_readonly)
+    ret= ma_checkpoint_execute(CHECKPOINT_FULL, FALSE);
+
+  ret|= maria_panic(flag);
+
+  maria_hton= 0;
+  return ret;
+}
+
+
+static int maria_commit(handlerton *hton __attribute__ ((unused)),
+                        THD *thd, bool all)
+{
+  TRN *trn= THD_TRN;
+  int res;
+  MARIA_HA *used_instances;
+  DBUG_ENTER("maria_commit");
+
+  /* No commit inside lock_tables() */
+  if ((!trn ||
+       thd->locked_tables_mode == LTM_LOCK_TABLES ||
+       thd->locked_tables_mode == LTM_PRELOCKED_UNDER_LOCK_TABLES))
+    DBUG_RETURN(0);
+
+  /* statement or transaction ? */
+  if ((thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) &&
+      !all)
+    DBUG_RETURN(0); // end of statement
+
+  used_instances= (MARIA_HA*) trn->used_instances;
+  trnman_reset_locked_tables(trn, 0);
+  trnman_set_flags(trn, trnman_get_flags(trn) & ~TRN_STATE_INFO_LOGGED);
+  trn->used_instances= 0;
+  res= ma_commit(trn);
+  reset_thd_trn(thd, used_instances);
+  thd_set_ha_data(thd, maria_hton, 0);
+  DBUG_RETURN(res);
+}
+
+#ifdef MARIA_CANNOT_ROLLBACK
+static int maria_rollback(handlerton *hton, THD *thd, bool all)
+{
+  TRN *trn= THD_TRN;
+  DBUG_ENTER("maria_rollback");
+  if (!trn)
+    DBUG_RETURN(0);
+  if (trn->undo_lsn)
+    push_warning_printf(thd, Sql_condition::WARN_LEVEL_NOTE,
+                        ER_DATA_WAS_COMMITED_UNDER_ROLLBACK,
+                        ER_THD(thd, ER_DATA_WAS_COMMITED_UNDER_ROLLBACK),
+                        "Aria");
+  if (all)
+    DBUG_RETURN(maria_commit(hton, thd, all));
+  /* Statement rollbacks are ignored. Commit will happen in external_lock */
+  DBUG_RETURN(0);
+}
+
+#else
+
+static int maria_rollback(handlerton *hton __attribute__ ((unused)),
+                          THD *thd, bool all)
+{
+  TRN *trn= THD_TRN;
+  DBUG_ENTER("maria_rollback");
+
+  DBUG_ASSERT(trnman_has_locked_tables(trn) == 0);
+  trnman_reset_locked_tables(trn, 0);
+  /* statement or transaction ? */
+  if ((thd->variables.option_bits & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)) &&
+      !all)
+  {
+    trnman_rollback_statement(trn);
+    DBUG_RETURN(0); // end of statement
+  }
+  reset_thd_trn(thd, (MARIA_HA*) trn->used_instances);
+  DBUG_RETURN(trnman_rollback_trn(trn) ?
+              HA_ERR_OUT_OF_MEM : 0); // end of transaction
+}
+#endif /* MARIA_CANNOT_ROLLBACK */
+
+
+/**
+  @brief flush log handler
+
+  @param hton            maria handlerton (unused)
+
+  @retval FALSE OK
+  @retval TRUE  Error
+*/
+
+bool maria_flush_logs(handlerton *hton)
+{
+  return MY_TEST(translog_purge_at_flush());
+}
+
+
+int maria_checkpoint_state(handlerton *hton, bool disabled)
+{
+  maria_checkpoint_disabled= (my_bool) disabled;
+  return 0;
+}
+
+
+/*
+  Handle backup calls
+*/
+
+void maria_prepare_for_backup()
+{
+  translog_disable_purge();
+}
+
+void maria_end_backup()
+{
+  translog_enable_purge();
+}
+
+
+
+#define SHOW_MSG_LEN (FN_REFLEN + 20)
+/**
+  @brief show status handler
+
+  @param hton            maria handlerton
+  @param thd             thread handler
+  @param print           print function
+  @param stat            type of status
+*/
+
+bool maria_show_status(handlerton *hton,
+                       THD *thd,
+                       stat_print_fn *print,
+                       enum ha_stat_type stat)
+{
+  const LEX_CSTRING *engine_name= hton_name(hton);
+  switch (stat) {
+  case HA_ENGINE_LOGS:
+  {
+    TRANSLOG_ADDRESS horizon= translog_get_horizon();
+    uint32 last_file= LSN_FILE_NO(horizon);
+    uint32 first_needed= translog_get_first_needed_file();
+    uint32 first_file= translog_get_first_file(horizon);
+    uint32 i;
+    const char unknown[]= "unknown";
+    const char needed[]= "in use";
+    const char unneeded[]= "free";
+    char path[FN_REFLEN];
+
+    if (first_file == 0)
+    {
+      const char error[]= "error";
+      print(thd, engine_name->str, engine_name->length,
+            STRING_WITH_LEN(""), error, sizeof(error) - 1);
+      break;
+    }
+
+    for (i= first_file; i <= last_file; i++)
+    {
+      char *file;
+      const char *status;
+      size_t length, status_len;
+      MY_STAT stat_buff, *stat;
+      const char error[]= "can't stat";
+      char object[SHOW_MSG_LEN];
+      file= translog_filename_by_fileno(i, path);
+      if (!(stat= mysql_file_stat(key_file_translog, file, &stat_buff, MYF(0))))
+      {
+        status= error;
+        status_len= sizeof(error) - 1;
+        length= my_snprintf(object, SHOW_MSG_LEN, "Size unknown ; %s", file);
+      }
+      else
+      {
+        if (first_needed == 0)
+        {
+          status= unknown;
+          status_len= sizeof(unknown) - 1;
+        }
+        else if (i < first_needed)
+        {
+          status= unneeded;
+          status_len= sizeof(unneeded) - 1;
+        }
+        else
+        {
+          status= needed;
+          status_len= sizeof(needed) - 1;
+        }
+        length= my_snprintf(object, SHOW_MSG_LEN, "Size %12llu ; %s",
+                            (ulonglong) stat->st_size, file);
+      }
+
+      print(thd, engine_name->str, engine_name->length,
+            object, length, status, status_len);
+    }
+    break;
+  }
+  case HA_ENGINE_STATUS:
+  case HA_ENGINE_MUTEX:
+  default:
+    break;
+  }
+  return 0;
+}
+
+
+/**
+  Callback to delete all logs in directory. This is lower-level than other
+  functions in ma_loghandler.c which delete logs, as it does not rely on
+  translog_init() having been called first.
+
+  @param  directory        directory where file is
+  @param  filename         base name of the file to delete
+*/
+
+static my_bool translog_callback_delete_all(const char *directory,
+                                            const char *filename)
+{
+  char complete_name[FN_REFLEN];
+  fn_format(complete_name, filename, directory, "", MYF(MY_UNPACK_FILENAME));
+  return mysql_file_delete(key_file_translog, complete_name, MYF(MY_WME));
+}
+
+
+/**
+  Helper function for option aria-force-start-after-recovery-failures.
+  Deletes logs if too many failures. Otherwise, increments the counter of
+  failures in the control file.
+  Notice how this has to be called _before_ translog_init() (if log is
+  corrupted, translog_init() might crash the server, so we need to remove logs
+  before).
+
+  @param  log_dir          directory where logs to be deleted are
+*/
+
+static int mark_recovery_start(const char* log_dir)
+{
+  int res;
+  DBUG_ENTER("mark_recovery_start");
+  if (!(maria_recover_options & HA_RECOVER_ANY))
+    ma_message_no_user(ME_WARNING, "Please consider using option"
+                       " --aria-recover-options[=...] to automatically check and"
+                       " repair tables when logs are removed by option"
+                       " --aria-force-start-after-recovery-failures=#");
+  if (recovery_failures >= force_start_after_recovery_failures)
+  {
+    /*
+      Remove logs which cause the problem; keep control file which has
+      critical info like uuid, max_trid (removing control file may make
+      correct tables look corrupted!).
+    */
+    char msg[100];
+    res= translog_walk_filenames(log_dir, &translog_callback_delete_all);
+    my_snprintf(msg, sizeof(msg),
+                "%s logs after %u consecutive failures of"
+                " recovery from logs",
+                (res ? "failed to remove some" : "removed all"),
+                recovery_failures);
+    ma_message_no_user((res ? 0 : ME_WARNING), msg);
+  }
+  else
+    res= ma_control_file_write_and_force(last_checkpoint_lsn, last_logno,
+                                         max_trid_in_control_file,
+                                         recovery_failures + 1);
+  DBUG_RETURN(res);
+}
+
+
+/**
+  Helper function for option aria-force-start-after-recovery-failures.
+  Records in the control file that recovery was a success, so that it's not
+  counted for aria-force-start-after-recovery-failures.
+*/
+
+static int mark_recovery_success(void)
+{
+  /* success of recovery, reset recovery_failures: */
+  int res;
+  DBUG_ENTER("mark_recovery_success");
+  res= ma_control_file_write_and_force(last_checkpoint_lsn, last_logno,
+                                       max_trid_in_control_file, 0);
+  DBUG_RETURN(res);
+}
+
+
+/*
+  Return 1 if table has changed during the current transaction
+*/
+
+bool ha_maria::is_changed() const
+{
+  return file->state->changed;
+}
+
+
+static int ha_maria_init(void *p)
+{
+  int res= 0, tmp;
+  const char *log_dir= maria_data_root;
+
+  /*
+    If aria_readonly is set, then we don't run recovery and we don't allow
+    opening of tables that are crashed. Used by mysqld --help
+   */
+  if ((aria_readonly= opt_help != 0))
+  {
+    maria_recover_options= 0;
+    checkpoint_interval= 0;
+  }
+
+#ifdef HAVE_PSI_INTERFACE
+  init_aria_psi_keys();
+#endif
+
+  maria_hton= (handlerton *)p;
+  maria_hton->db_type= DB_TYPE_ARIA;
+  maria_hton->create= maria_create_handler;
+  maria_hton->panic= maria_hton_panic;
+  maria_hton->tablefile_extensions= ha_maria_exts;
+  maria_hton->commit= maria_commit;
+  maria_hton->rollback= maria_rollback;
+  maria_hton->checkpoint_state= maria_checkpoint_state;
+  maria_hton->flush_logs= maria_flush_logs;
+  maria_hton->show_status= maria_show_status;
+  maria_hton->prepare_for_backup= maria_prepare_for_backup;
+  maria_hton->end_backup= maria_end_backup;
+
+  /* TODO: decide if we support Maria being used for log tables */
+  maria_hton->flags= (HTON_CAN_RECREATE | HTON_SUPPORT_LOG_TABLES |
+                      HTON_NO_ROLLBACK |
+                      HTON_TRANSACTIONAL_AND_NON_TRANSACTIONAL);
+  bzero(maria_log_pagecache, sizeof(*maria_log_pagecache));
+  maria_tmpdir= &mysql_tmpdir_list;             /* For REDO */
+
+  if (!aria_readonly)
+    res= maria_upgrade();
+  res= res || maria_init();
+  tmp= ma_control_file_open(!aria_readonly, !aria_readonly, !aria_readonly);
+  res= res || aria_readonly ? tmp == CONTROL_FILE_LOCKED : tmp != 0;
+  res= res ||
+    ((force_start_after_recovery_failures != 0 && !aria_readonly) &&
+     mark_recovery_start(log_dir)) ||
+    !init_pagecache(maria_pagecache,
+                    (size_t) pagecache_buffer_size, pagecache_division_limit,
+                    pagecache_age_threshold, maria_block_size, pagecache_file_hash_size,
+                    0) ||
+    !init_pagecache(maria_log_pagecache,
+                    TRANSLOG_PAGECACHE_SIZE, 0, 0,
+                    TRANSLOG_PAGE_SIZE, 0, 0) ||
+    (!aria_readonly &&
+     translog_init(maria_data_root, log_file_size,
+                   MYSQL_VERSION_ID, server_id, maria_log_pagecache,
+                   TRANSLOG_DEFAULT_FLAGS, 0)) ||
+    (!aria_readonly &&
+     (maria_recovery_from_log() ||
+      ((force_start_after_recovery_failures != 0 ||
+        maria_recovery_changed_data || recovery_failures) &&
+       mark_recovery_success()))) ||
+    (aria_readonly && trnman_init(MAX_INTERNAL_TRID-16)) ||
+    ma_checkpoint_init(checkpoint_interval);
+  maria_multi_threaded= maria_in_ha_maria= TRUE;
+  maria_create_trn_hook= maria_create_trn_for_mysql;
+  maria_pagecache->extra_debug= 1;
+  maria_assert_if_crashed_table= debug_assert_if_crashed_table;
+
+  if (res)
+  {
+    maria_hton= 0;
+    maria_panic(HA_PANIC_CLOSE);
+  }
+
+  ma_killed= ma_killed_in_mariadb;
+  if (res)
+    maria_panic(HA_PANIC_CLOSE);
+
+  return res ? HA_ERR_INITIALIZATION : 0;
+}
+
+
+#ifdef HAVE_QUERY_CACHE
+/**
+  @brief Register a named table with a call back function to the query cache.
+
+  @param thd The thread handle
+  @param table_key A pointer to the table name in the table cache
+  @param key_length The length of the table name
+  @param[out] engine_callback The pointer to the storage engine call back
+    function, currently 0
+  @param[out] engine_data Engine data will be set to 0.
+
+  @note Despite the name of this function, it is used to check each statement
+    before it is cached and not to register a table or callback function.
+
+  @see handler::register_query_cache_table
+
+  @return The error code. The engine_data and engine_callback will be set to 0.
+    @retval TRUE Success
+    @retval FALSE An error occurred
+*/
+
+my_bool ha_maria::register_query_cache_table(THD *thd, const char *table_name,
+					     uint table_name_len,
+					     qc_engine_callback
+					     *engine_callback,
+					     ulonglong *engine_data)
+{
+  ulonglong actual_data_file_length;
+  ulonglong current_data_file_length;
+  DBUG_ENTER("ha_maria::register_query_cache_table");
+
+  /*
+    No call back function is needed to determine if a cached statement
+    is valid or not.
+  */
+  *engine_callback= 0;
+
+  /*
+    No engine data is needed.
+  */
+  *engine_data= 0;
+
+  if (file->s->now_transactional && file->s->have_versioning)
+    DBUG_RETURN(file->trn->trid >= file->s->state.last_change_trn);
+
+  /*
+    If a concurrent INSERT has happened just before the currently processed
+    SELECT statement, the total size of the table is unknown.
+
+    To determine if the table size is known, the current thread's snap shot of
+    the table size with the actual table size are compared.
+
+    If the table size is unknown the SELECT statement can't be cached.
+  */
+
+  /*
+    POSIX visibility rules specify that "2. Whatever memory values a
+    thread can see when it unlocks a mutex <...> can also be seen by any
+    thread that later locks the same mutex". In this particular case,
+    concurrent insert thread had modified the data_file_length in
+    MYISAM_SHARE before it has unlocked (or even locked)
+    structure_guard_mutex. So, here we're guaranteed to see at least that
+    value after we've locked the same mutex. We can see a later value
+    (modified by some other thread) though, but it's ok, as we only want
+    to know if the variable was changed, the actual new value doesn't matter
+  */
+  actual_data_file_length= file->s->state.state.data_file_length;
+  current_data_file_length= file->state->data_file_length;
+
+  /* Return whether is ok to try to cache current statement. */
+  DBUG_RETURN(!(file->s->non_transactional_concurrent_insert &&
+                current_data_file_length != actual_data_file_length));
+}
+#endif
+
+static struct st_mysql_sys_var *system_variables[]= {
+  MYSQL_SYSVAR(block_size),
+  MYSQL_SYSVAR(checkpoint_interval),
+  MYSQL_SYSVAR(checkpoint_log_activity),
+  MYSQL_SYSVAR(force_start_after_recovery_failures),
+  MYSQL_SYSVAR(group_commit),
+  MYSQL_SYSVAR(group_commit_interval),
+  MYSQL_SYSVAR(log_dir_path),
+  MYSQL_SYSVAR(log_file_size),
+  MYSQL_SYSVAR(log_purge_type),
+  MYSQL_SYSVAR(max_sort_file_size),
+  MYSQL_SYSVAR(page_checksum),
+  MYSQL_SYSVAR(pagecache_age_threshold),
+  MYSQL_SYSVAR(pagecache_buffer_size),
+  MYSQL_SYSVAR(pagecache_division_limit),
+  MYSQL_SYSVAR(pagecache_file_hash_size),
+  MYSQL_SYSVAR(recover_options),
+  MYSQL_SYSVAR(repair_threads),
+  MYSQL_SYSVAR(sort_buffer_size),
+  MYSQL_SYSVAR(stats_method),
+  MYSQL_SYSVAR(sync_log_dir),
+  MYSQL_SYSVAR(used_for_temp_tables),
+  MYSQL_SYSVAR(encrypt_tables),
+  NULL
+};
+
+
+/**
+   @brief Updates the checkpoint interval and restarts the background thread.
+*/
+
+static void update_checkpoint_interval(MYSQL_THD thd,
+                                        struct st_mysql_sys_var *var,
+                                        void *var_ptr, const void *save)
+{
+  ma_checkpoint_end();
+  ma_checkpoint_init(*(ulong *)var_ptr= (ulong)(*(long *)save));
+}
+
+
+/**
+   @brief Updates group commit mode
+*/
+
+static void update_maria_group_commit(MYSQL_THD thd,
+                                      struct st_mysql_sys_var *var,
+                                      void *var_ptr, const void *save)
+{
+  ulong value= (ulong)*((long *)var_ptr);
+  DBUG_ENTER("update_maria_group_commit");
+  DBUG_PRINT("enter", ("old value: %lu  new value %lu  rate %lu",
+                       value, (ulong)(*(long *)save),
+                       maria_group_commit_interval));
+  /* old value */
+  switch (value) {
+  case TRANSLOG_GCOMMIT_NONE:
+    break;
+  case TRANSLOG_GCOMMIT_HARD:
+    translog_hard_group_commit(FALSE);
+    break;
+  case TRANSLOG_GCOMMIT_SOFT:
+    translog_soft_sync(FALSE);
+    if (maria_group_commit_interval)
+      translog_soft_sync_end();
+    break;
+  default:
+    DBUG_ASSERT(0); /* impossible */
+  }
+  value= *(ulong *)var_ptr= (ulong)(*(long *)save);
+  translog_sync();
+  /* new value */
+  switch (value) {
+  case TRANSLOG_GCOMMIT_NONE:
+    break;
+  case TRANSLOG_GCOMMIT_HARD:
+    translog_hard_group_commit(TRUE);
+    break;
+  case TRANSLOG_GCOMMIT_SOFT:
+    translog_soft_sync(TRUE);
+    /* variable change made under global lock so we can just read it */
+    if (maria_group_commit_interval)
+      translog_soft_sync_start();
+    break;
+  default:
+    DBUG_ASSERT(0); /* impossible */
+  }
+  DBUG_VOID_RETURN;
+}
+
+/**
+   @brief Updates group commit interval
+*/
+
+static void update_maria_group_commit_interval(MYSQL_THD thd,
+                                               struct st_mysql_sys_var *var,
+                                               void *var_ptr, const void *save)
+{
+  ulong new_value= (ulong)*((long *)save);
+  ulong *value_ptr= (ulong*) var_ptr;
+  DBUG_ENTER("update_maria_group_commit_interval");
+  DBUG_PRINT("enter", ("old value: %lu  new value %lu  group commit %lu",
+                        *value_ptr, new_value, maria_group_commit));
+
+  /* variable change made under global lock so we can just read it */
+  switch (maria_group_commit) {
+    case TRANSLOG_GCOMMIT_NONE:
+      *value_ptr= new_value;
+      translog_set_group_commit_interval(new_value);
+      break;
+    case TRANSLOG_GCOMMIT_HARD:
+      *value_ptr= new_value;
+      translog_set_group_commit_interval(new_value);
+      break;
+    case TRANSLOG_GCOMMIT_SOFT:
+      if (*value_ptr)
+        translog_soft_sync_end();
+      translog_set_group_commit_interval(new_value);
+      if ((*value_ptr= new_value))
+        translog_soft_sync_start();
+      break;
+    default:
+      DBUG_ASSERT(0); /* impossible */
+  }
+  DBUG_VOID_RETURN;
+}
+
+/**
+   @brief Updates the transaction log file limit.
+*/
+
+static void update_log_file_size(MYSQL_THD thd,
+                                 struct st_mysql_sys_var *var,
+                                 void *var_ptr, const void *save)
+{
+  uint32 size= (uint32)((ulong)(*(long *)save));
+  translog_set_file_size(size);
+  *(ulong *)var_ptr= size;
+}
+
+
+static SHOW_VAR status_variables[]= {
+  {"pagecache_blocks_not_flushed", (char*) &maria_pagecache_var.global_blocks_changed, SHOW_LONG},
+  {"pagecache_blocks_unused",      (char*) &maria_pagecache_var.blocks_unused, SHOW_LONG},
+  {"pagecache_blocks_used",        (char*) &maria_pagecache_var.blocks_used, SHOW_LONG},
+  {"pagecache_read_requests",      (char*) &maria_pagecache_var.global_cache_r_requests, SHOW_LONGLONG},
+  {"pagecache_reads",              (char*) &maria_pagecache_var.global_cache_read, SHOW_LONGLONG},
+  {"pagecache_write_requests",     (char*) &maria_pagecache_var.global_cache_w_requests, SHOW_LONGLONG},
+  {"pagecache_writes",             (char*) &maria_pagecache_var.global_cache_write, SHOW_LONGLONG},
+  {"transaction_log_syncs",        (char*) &translog_syncs, SHOW_LONGLONG},
+  {NullS, NullS, SHOW_LONG}
+};
+
+/****************************************************************************
+ * Maria MRR implementation: use DS-MRR
+ ***************************************************************************/
+
+int ha_maria::multi_range_read_init(RANGE_SEQ_IF *seq, void *seq_init_param,
+                                    uint n_ranges, uint mode,
+                                    HANDLER_BUFFER *buf)
+{
+  return ds_mrr.dsmrr_init(this, seq, seq_init_param, n_ranges, mode, buf);
+}
+
+int ha_maria::multi_range_read_next(range_id_t *range_info)
+{
+  return ds_mrr.dsmrr_next(range_info);
+}
+
+ha_rows ha_maria::multi_range_read_info_const(uint keyno, RANGE_SEQ_IF *seq,
+                                               void *seq_init_param,
+                                               uint n_ranges, uint *bufsz,
+                                               uint *flags, Cost_estimate *cost)
+{
+  /*
+    This call is here because there is no location where this->table would
+    already be known.
+    TODO: consider moving it into some per-query initialization call.
+  */
+  ds_mrr.init(this, table);
+  return ds_mrr.dsmrr_info_const(keyno, seq, seq_init_param, n_ranges, bufsz,
+                                 flags, cost);
+}
+
+ha_rows ha_maria::multi_range_read_info(uint keyno, uint n_ranges, uint keys,
+                                       uint key_parts, uint *bufsz,
+                                       uint *flags, Cost_estimate *cost)
+{
+  ds_mrr.init(this, table);
+  return ds_mrr.dsmrr_info(keyno, n_ranges, keys, key_parts, bufsz, flags, cost);
+}
+
+int ha_maria::multi_range_read_explain_info(uint mrr_mode, char *str,
+                                            size_t size)
+{
+  return ds_mrr.dsmrr_explain_info(mrr_mode, str, size);
+}
+/* MyISAM MRR implementation ends */
+
+
+/* Index condition pushdown implementation*/
+
+
+Item *ha_maria::idx_cond_push(uint keyno_arg, Item* idx_cond_arg)
+{
+  /*
+    Check if the key contains a blob field. If it does then MyISAM
+    should not accept the pushed index condition since MyISAM will not
+    read the blob field from the index entry during evaluation of the
+    pushed index condition and the BLOB field might be part of the
+    range evaluation done by the ICP code.
+  */
+  const KEY *key= &table_share->key_info[keyno_arg];
+
+  for (uint k= 0; k < key->user_defined_key_parts; ++k)
+  {
+    const KEY_PART_INFO *key_part= &key->key_part[k];
+    if (key_part->key_part_flag & HA_BLOB_PART)
+    {
+      /* Let the server handle the index condition */
+      return idx_cond_arg;
+    }
+  }
+
+  pushed_idx_cond_keyno= keyno_arg;
+  pushed_idx_cond= idx_cond_arg;
+  in_range_check_pushed_down= TRUE;
+  if (active_index == pushed_idx_cond_keyno)
+    ma_set_index_cond_func(file, handler_index_cond_check, this);
+  return NULL;
+}
+
+/**
+  Find record by unique constrain (used in temporary tables)
+
+  @param record          (IN|OUT) the record to find
+  @param constrain_no    (IN) number of constrain (for this engine)
+
+  @note It is like hp_search but uses function for raw where hp_search
+        uses functions for index.
+
+  @retval  0 OK
+  @retval  1 Not found
+  @retval -1 Error
+*/
+
+int ha_maria::find_unique_row(uchar *record, uint constrain_no)
+{
+  int rc;
+  register_handler(file);
+  if (file->s->state.header.uniques)
+  {
+    DBUG_ASSERT(file->s->state.header.uniques > constrain_no);
+    MARIA_UNIQUEDEF *def= file->s->uniqueinfo + constrain_no;
+    ha_checksum unique_hash= _ma_unique_hash(def, record);
+    rc= _ma_check_unique(file, def, record, unique_hash, HA_OFFSET_ERROR);
+    if (rc)
+    {
+      file->cur_row.lastpos= file->dup_key_pos;
+      if ((*file->read_record)(file, record, file->cur_row.lastpos))
+        return -1;
+      file->update|= HA_STATE_AKTIV;                     /* Record is read */
+    }
+    // invert logic
+    rc= !MY_TEST(rc);
+  }
+  else
+  {
+    /*
+     It is case when just unique index used instead unicue constrain
+     (conversion from heap table).
+     */
+    DBUG_ASSERT(file->s->state.header.keys > constrain_no);
+    MARIA_KEY key;
+    file->once_flags|= USE_PACKED_KEYS;
+    (*file->s->keyinfo[constrain_no].make_key)
+      (file, &key, constrain_no, file->lastkey_buff2, record, 0, 0);
+    rc= maria_rkey(file, record, constrain_no, key.data, key.data_length,
+                   HA_READ_KEY_EXACT);
+    rc= MY_TEST(rc);
+  }
+  return rc;
+}
+
+
+/**
+   Check if a table needs to be repaired
+*/
+
+int ha_maria::check_for_upgrade(HA_CHECK_OPT *check)
+{
+  if (table->s->mysql_version && table->s->mysql_version <= 100509 &&
+      (file->s->base.extra_options & MA_EXTRA_OPTIONS_ENCRYPTED))
+  {
+    /*
+      Encrypted tables before 10.5.9 had a bug where LSN was not
+      stored on the pages. These must be repaired!
+    */
+    return HA_ADMIN_NEEDS_ALTER;
+  }
+  return HA_ADMIN_OK;
+}
+
+
+struct st_mysql_storage_engine maria_storage_engine=
+{ MYSQL_HANDLERTON_INTERFACE_VERSION };
+
+maria_declare_plugin(aria)
+{
+  MYSQL_STORAGE_ENGINE_PLUGIN,
+  &maria_storage_engine,
+  "Aria",
+  "MariaDB Corporation Ab",
+  "Crash-safe tables with MyISAM heritage. Used for internal temporary tables and privilege tables",
+  PLUGIN_LICENSE_GPL,
+  ha_maria_init,                /* Plugin Init      */
+  NULL,                         /* Plugin Deinit    */
+  0x0105,                       /* 1.5              */
+  status_variables,             /* status variables */
+  system_variables,             /* system variables */
+  "1.5",                        /* string version   */
+  MariaDB_PLUGIN_MATURITY_STABLE /* maturity         */
+}
+maria_declare_plugin_end;