1 files changed, 249 insertions, 0 deletions
diff --git a/storage/tokudb/PerconaFT/src/tests/stat64-root-changes.cc b/storage/tokudb/PerconaFT/src/tests/stat64-root-changes.cc
new file mode 100644
index 00000000..48843a0b
--- /dev/null
+++ b/storage/tokudb/PerconaFT/src/tests/stat64-root-changes.cc
@@ -0,0 +1,249 @@
+/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
+#ident "$Id$"
+/*======
+This file is part of PerconaFT.
+
+
+Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
+
+    PerconaFT is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License, version 2,
+    as published by the Free Software Foundation.
+
+    PerconaFT 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 PerconaFT.  If not, see <http://www.gnu.org/licenses/>.
+
+----------------------------------------
+
+    PerconaFT is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License, version 3,
+    as published by the Free Software Foundation.
+
+    PerconaFT 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with PerconaFT.  If not, see <http://www.gnu.org/licenses/>.
+======= */
+
+#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
+
+#include "test.h"
+
+// verify stats after a new row inserted into the root
+// verify stats after a row overwrite in the root
+// verify stats after a row deletion in the root
+// verify stats after an update callback inserts row
+// verify stats after an update callback overwrites row
+// verify ststs after an update callback deletes row
+
+#include <db.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+static int 
+my_update_callback(DB *db UU(), const DBT *key UU(), const DBT *old_val, const DBT *extra, void (*set_val)(const DBT *new_val, void *set_extra), void *set_extra) {
+    if (old_val != NULL && old_val->size == 42) // special code for delete
+        set_val(NULL, set_extra);
+    else
+        set_val(extra, set_extra);
+    return 0;
+}
+
+static void 
+run_test (void) {
+    int r;
+
+    toku_os_recursive_delete(TOKU_TEST_FILENAME);
+    r = toku_os_mkdir(TOKU_TEST_FILENAME, S_IRWXU+S_IRWXG+S_IRWXO);       CKERR(r);
+
+    DB_ENV *env = NULL;
+    r = db_env_create(&env, 0); CKERR(r);
+    env->set_errfile(env, stderr);
+    r = env->set_redzone(env, 0); CKERR(r);
+    env->set_update(env, my_update_callback);
+    r = env->open(env, TOKU_TEST_FILENAME, DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_MPOOL|DB_INIT_TXN|DB_CREATE|DB_PRIVATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+
+    DB *db = NULL;
+    r = db_create(&db, env, 0); CKERR(r);
+    DB_TXN *txn = NULL;
+    r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+    r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+    r = txn->commit(txn, 0);    CKERR(r);
+
+    // verify that stats include a new row inserted into the root
+    {
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        int key = 1; char val = 1;
+        DBT k,v;
+        r = db->put(db, txn, dbt_init(&k, &key, sizeof key), dbt_init(&v, &val, sizeof val), 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        DB_BTREE_STAT64 s;
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1 && s.bt_dsize == sizeof key + sizeof val);
+
+        r = db->close(db, 0);     CKERR(r);
+
+        r = db_create(&db, env, 0); CKERR(r);
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1 && s.bt_dsize == sizeof key + sizeof val);
+    }
+
+    // verify that stats are updated by row overwrite in the root
+    {
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        int key = 1; int val = 2;
+        DBT k,v;
+        r = db->put(db, txn, dbt_init(&k, &key, sizeof key), dbt_init(&v, &val, sizeof val), 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        DB_BTREE_STAT64 s;
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1 && s.bt_dsize == sizeof key + sizeof val);
+
+        r = db->close(db, 0);     CKERR(r);
+
+        r = db_create(&db, env, 0); CKERR(r);
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1 && s.bt_dsize == sizeof key + sizeof val);
+    }
+
+    // verify that stats are updated by row deletion in the root
+    {
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        int key = 1;
+        DBT k;
+        r = db->del(db, txn, dbt_init(&k, &key, sizeof key), 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        DB_BTREE_STAT64 s;
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys <= 1 && s.bt_dsize == 0); // since garbage collection may not occur, the key count may not be updated
+
+        r = db->close(db, 0);     CKERR(r);
+
+        r = db_create(&db, env, 0); CKERR(r);
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        // garbage collection has happened in db->close, so 
+        // the number of keys should be 0
+        assert(s.bt_nkeys == 0 && s.bt_dsize == 0);
+    }
+
+    // verify update of non-existing key inserts a row
+    //
+    //
+    // NOTE: #5744 was caught by this test below.
+    //
+    //
+    {
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        int key = 1; char val = 1;
+        DBT k = { .data = &key, .size = sizeof key };
+        DBT e = { .data = &val, .size = sizeof val };
+        r = db->update(db, txn, &k, &e, 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        DB_BTREE_STAT64 s;
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1);
+
+        r = db->close(db, 0);     CKERR(r);
+
+        r = db_create(&db, env, 0); CKERR(r);
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1);
+    }
+
+    // verify update callback overwrites the row
+    {
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        int key = 1; int val = 2;
+        DBT k = { .data = &key, .size = sizeof key };
+        DBT e = { .data = &val, .size = sizeof val };
+        r = db->update(db, txn, &k, &e, 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        DB_BTREE_STAT64 s;
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1 && s.bt_dsize == sizeof key + sizeof val);
+
+        r = db->close(db, 0);     CKERR(r);
+
+        r = db_create(&db, env, 0); CKERR(r);
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys == 1 && s.bt_dsize == sizeof key + sizeof val);
+    }
+
+    // verify update callback deletes the row
+    {
+        // insert a new row
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        int key = 1; char val[42]; memset(val, 0, sizeof val);
+        DBT k = { .data = &key, .size = sizeof key };
+        DBT e = { .data = &val, .size = sizeof val };
+        r = db->update(db, txn, &k, &e, 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        DB_BTREE_STAT64 s;
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys <= 2 && s.bt_dsize == sizeof key + sizeof val);
+
+        // update it again, this should delete the row
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->update(db, txn, &k, &e, 0); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys <= 2 && s.bt_dsize == 0); // since garbage collection may not occur, the key count may not be updated
+
+        r = db->close(db, 0);     CKERR(r);
+
+        r = db_create(&db, env, 0); CKERR(r);
+        r = env->txn_begin(env, 0, &txn, 0); CKERR(r);
+        r = db->open(db, txn, "foo.db", 0, DB_BTREE, DB_CREATE, S_IRWXU+S_IRWXG+S_IRWXO); CKERR(r);
+        r = txn->commit(txn, 0);    CKERR(r);
+
+        r = db->stat64(db, NULL, &s); CKERR(r);
+        assert(s.bt_nkeys <= 2 && s.bt_dsize == 0);
+    }
+
+    r = db->close(db, 0);     CKERR(r);
+
+    r = env->close(env, 0);   CKERR(r);
+}
+
+int
+test_main (int argc , char * const argv[]) {
+    parse_args(argc, argv);
+    run_test();
+    return 0;
+}