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, 65 insertions, 0 deletions

diff --git a/mysql-test/main/partition_debug_sync.result b/mysql-test/main/partition_debug_sync.result
new file mode 100644
index 00000000..7006491f
--- /dev/null
+++ b/mysql-test/main/partition_debug_sync.result
@@ -0,0 +1,65 @@
+SET DEBUG_SYNC= 'RESET';
+#
+# Bug#42438: Crash ha_partition::change_table_ptr
+# Test when remove partitioning is done while drop table is waiting
+# for the table.
+# After MDL was introduced, there is no longer any race, so test is done
+# by adding a small sleep to verify that the delete waits. This happens
+# only until ALTER tries to upgrade its MDL lock, which ends up in MDL
+# deadlock which is correctly reported.
+connect con1, localhost, root,,;
+SET DEBUG_SYNC= 'RESET';
+CREATE TABLE t1
+(a INTEGER,
+b INTEGER NOT NULL,
+KEY (b))
+ENGINE = MYISAM
+/*!50100  PARTITION BY RANGE (a)
+(PARTITION p0 VALUES LESS THAN (2),
+PARTITION p1 VALUES LESS THAN (20),
+PARTITION p2 VALUES LESS THAN (100),
+PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
+SET DEBUG_SYNC= 'alter_table_before_create_table_no_lock SIGNAL removing_partitioning WAIT_FOR waiting_for_alter';
+SET DEBUG_SYNC= 'mdl_acquire_lock_wait SIGNAL waiting_for_upgrade';
+ALTER TABLE t1 REMOVE PARTITIONING;
+connection default;
+SET DEBUG_SYNC= 'now WAIT_FOR removing_partitioning';
+SET DEBUG_SYNC= 'mdl_acquire_lock_wait SIGNAL waiting_for_alter';
+SET DEBUG_SYNC= 'rm_table_no_locks_before_delete_table WAIT_FOR waiting_for_upgrade';
+DROP TABLE IF EXISTS t1;
+connection con1;
+ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
+connection default;
+SET DEBUG_SYNC= 'RESET';
+connection con1;
+SET DEBUG_SYNC= 'RESET';
+#
+# Bug#42438: Crash ha_partition::change_table_ptr
+# Test when remove partitioning is failing due to drop table is already
+# in progress.
+# After MDL was introduced, there is no longer any race, so test is done
+# by adding a small sleep to verify that the alter waits.
+CREATE TABLE t2
+(a INTEGER,
+b INTEGER NOT NULL,
+KEY (b))
+ENGINE = MYISAM
+PARTITION BY RANGE (a) (PARTITION p0 VALUES LESS THAN (2),
+PARTITION p1 VALUES LESS THAN (20),
+PARTITION p2 VALUES LESS THAN (100),
+PARTITION p3 VALUES LESS THAN MAXVALUE);
+SET DEBUG_SYNC= 'alter_table_before_open_tables SIGNAL removing_partitions WAIT_FOR waiting_for_alter';
+SET DEBUG_SYNC= 'alter_table_before_rename_result_table WAIT_FOR delete_done';
+ALTER TABLE t2 REMOVE PARTITIONING;
+connection default;
+SET DEBUG_SYNC= 'now WAIT_FOR removing_partitions';
+SET DEBUG_SYNC= 'rm_table_no_locks_before_delete_table SIGNAL waiting_for_alter';
+SET DEBUG_SYNC= 'rm_table_no_locks_before_binlog SIGNAL delete_done';
+DROP TABLE IF EXISTS t2;
+connection con1;
+ERROR 42S02: Table 'test.t2' doesn't exist
+SET DEBUG_SYNC= 'RESET';
+disconnect con1;
+connection default;
+SET DEBUG_SYNC= 'RESET';
+End of 5.1 tests