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41a3dfe490
DATABASE with open HANDLER" Remove LOCK_create_db, database name locks, and use metadata locks instead. This exposes CREATE/DROP/ALTER DATABASE statements to the graph-based deadlock detector in MDL, and paves the way for a safe, deadlock-free implementation of RENAME DATABASE. Database DDL statements will now take exclusive metadata locks on the database name, while table/view/routine DDL statements take intention exclusive locks on the database name. This prevents race conditions between database DDL and table/view/routine DDL. (e.g. DROP DATABASE with concurrent CREATE/ALTER/DROP TABLE) By adding database name locks, this patch implements WL#4450 "DDL locking: CREATE/DROP DATABASE must use database locks" and WL#4985 "DDL locking: namespace/hierarchical locks". The patch also changes code to use init_one_table() where appropriate. The new lock_table_names() function requires TABLE_LIST::db_length to be set correctly, and this is taken care of by init_one_table(). This patch also adds a simple template to help work with the mysys HASH data structure. Most of the patch was written by Konstantin Osipov.
90 lines
3.0 KiB
Plaintext
90 lines
3.0 KiB
Plaintext
#--disable_abort_on_error
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#
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# Test for the partition storage engine which require DEBUG_SYNC feature to
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# Created by Mattias Jonsson
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#
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--source include/have_partition.inc
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--source include/have_debug_sync.inc
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--disable_warnings
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DROP TABLE IF EXISTS t1, t2;
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SET DEBUG_SYNC= 'RESET';
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--enable_warnings
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--echo #
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--echo # Bug#42438: Crash ha_partition::change_table_ptr
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--echo # Test when remove partitioning is done while drop table is waiting
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--echo # for the table.
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--echo # After MDL was introduced, there is no longer any race, so test is done
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--echo # by adding a small sleep to verify that the delete waits.
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connect(con1, localhost, root,,);
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--echo # 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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--send ALTER TABLE t1 REMOVE PARTITIONING
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connection default;
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--echo # 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_part2_before_delete_table WAIT_FOR partitioning_removed';
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DROP TABLE IF EXISTS t1;
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--echo # Con 1
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connection con1;
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--reap
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SET SESSION debug= "-d,sleep_before_create_table_no_lock";
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connection default;
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SET DEBUG_SYNC= 'RESET';
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connection con1;
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SET DEBUG_SYNC= 'RESET';
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--echo #
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--echo # Bug#42438: Crash ha_partition::change_table_ptr
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--echo # Test when remove partitioning is failing due to drop table is already
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--echo # in progress.
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--echo # After MDL was introduced, there is no longer any race, so test is done
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--echo # 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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--send ALTER TABLE t2 REMOVE PARTITIONING
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connection default;
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--echo # Con default
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SET SESSION debug= "+d,sleep_before_part2_delete_table";
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SET DEBUG_SYNC= 'now WAIT_FOR removing_partitions';
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SET DEBUG_SYNC= 'rm_table_part2_before_delete_table SIGNAL waiting_for_alter';
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SET DEBUG_SYNC= 'rm_table_part2_before_binlog SIGNAL delete_done';
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DROP TABLE IF EXISTS t2;
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SET SESSION debug= "-d,sleep_before_part2_delete_table";
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--echo # Con 1
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connection con1;
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--error ER_NO_SUCH_TABLE
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--reap
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SET DEBUG_SYNC= 'RESET';
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disconnect con1;
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connection default;
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--echo # Con default
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SET DEBUG_SYNC= 'RESET';
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--echo End of 5.1 tests
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