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a84d750300
breaks SBR This pre-requisite patch refactors the code for dropping tables, used by DROP TABLE and DROP DATABASE. The patch moves the code for acquiring metadata locks out of mysql_rm_table_part2() and makes it the responsibility of the caller. This in preparation of changing the DROP DATABASE implementation to acquire all metadata locks before any changes are made. mysql_rm_table_part2() is renamed mysql_rm_table_no_locks() to reflect the change.
66 lines
2.5 KiB
Plaintext
66 lines
2.5 KiB
Plaintext
DROP TABLE IF EXISTS t1, t2;
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SET DEBUG_SYNC= 'RESET';
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#
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# Bug#42438: Crash ha_partition::change_table_ptr
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# Test when remove partitioning is done while drop table is waiting
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# for the table.
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# After MDL was introduced, there is no longer any race, so test is done
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# by adding a small sleep to verify that the delete waits.
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# Con 1
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SET DEBUG_SYNC= 'RESET';
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CREATE TABLE t1
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(a INTEGER,
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b INTEGER NOT NULL,
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KEY (b))
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ENGINE = MYISAM
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/*!50100 PARTITION BY RANGE (a)
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(PARTITION p0 VALUES LESS THAN (2),
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PARTITION p1 VALUES LESS THAN (20),
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PARTITION p2 VALUES LESS THAN (100),
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PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
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SET SESSION debug= "+d,sleep_before_create_table_no_lock";
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SET DEBUG_SYNC= 'alter_table_before_create_table_no_lock SIGNAL removing_partitioning WAIT_FOR waiting_for_alter';
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SET DEBUG_SYNC= 'alter_table_before_main_binlog SIGNAL partitioning_removed';
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ALTER TABLE t1 REMOVE PARTITIONING;
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# Con default
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SET DEBUG_SYNC= 'now WAIT_FOR removing_partitioning';
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SET DEBUG_SYNC= 'mdl_acquire_lock_wait SIGNAL waiting_for_alter';
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SET DEBUG_SYNC= 'rm_table_no_locks_before_delete_table WAIT_FOR partitioning_removed';
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DROP TABLE IF EXISTS t1;
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# Con 1
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SET SESSION debug= "-d,sleep_before_create_table_no_lock";
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SET DEBUG_SYNC= 'RESET';
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SET DEBUG_SYNC= 'RESET';
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#
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# Bug#42438: Crash ha_partition::change_table_ptr
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# Test when remove partitioning is failing due to drop table is already
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# in progress.
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# After MDL was introduced, there is no longer any race, so test is done
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# by adding a small sleep to verify that the alter waits.
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CREATE TABLE t2
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(a INTEGER,
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b INTEGER NOT NULL,
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KEY (b))
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ENGINE = MYISAM
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/*!50100 PARTITION BY RANGE (a)
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(PARTITION p0 VALUES LESS THAN (2),
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PARTITION p1 VALUES LESS THAN (20),
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PARTITION p2 VALUES LESS THAN (100),
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PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
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SET DEBUG_SYNC= 'alter_table_before_open_tables SIGNAL removing_partitions WAIT_FOR waiting_for_alter';
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SET DEBUG_SYNC= 'alter_table_before_rename_result_table WAIT_FOR delete_done';
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ALTER TABLE t2 REMOVE PARTITIONING;
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# Con default
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SET SESSION debug= "+d,sleep_before_no_locks_delete_table";
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SET DEBUG_SYNC= 'now WAIT_FOR removing_partitions';
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SET DEBUG_SYNC= 'rm_table_no_locks_before_delete_table SIGNAL waiting_for_alter';
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SET DEBUG_SYNC= 'rm_table_no_locks_before_binlog SIGNAL delete_done';
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DROP TABLE IF EXISTS t2;
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SET SESSION debug= "-d,sleep_before_no_locks_delete_table";
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# Con 1
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ERROR 42S02: Table 'test.t2' doesn't exist
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SET DEBUG_SYNC= 'RESET';
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# Con default
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SET DEBUG_SYNC= 'RESET';
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End of 5.1 tests
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