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#--disable_abort_on_error
#
# Test for the partition storage engine which require DEBUG_SYNC feature to
# Created by Mattias Jonsson
#
--source include/have_partition.inc
--source include/have_debug_sync.inc
--source include/have_debug.inc
--source include/have_innodb.inc
SET DEBUG_SYNC= 'RESET';
--echo #
--echo # Bug#42438: Crash ha_partition::change_table_ptr
--echo # Test when remove partitioning is done while drop table is waiting
--echo # for the table.
--echo # After MDL was introduced, there is no longer any race, so test is done
--echo # by adding a small sleep to verify that the delete waits. This happens
--echo # only until ALTER tries to upgrade its MDL lock, which ends up in MDL
--echo # 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';
--send 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 ER_LOCK_DEADLOCK
--reap
connection default;
SET DEBUG_SYNC= 'RESET';
connection con1;
SET DEBUG_SYNC= 'RESET';
--echo #
--echo # Bug#42438: Crash ha_partition::change_table_ptr
--echo # Test when remove partitioning is failing due to drop table is already
--echo # in progress.
--echo # After MDL was introduced, there is no longer any race, so test is done
--echo # 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';
--send 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 WAIT_FOR mtr_continue';
SET DEBUG_SYNC= 'rm_table_no_locks_before_binlog SIGNAL delete_done';
--send DROP TABLE IF EXISTS t2
--echo # Create a new connection thread to orchestrate the ALTER and DROP
--echo # threads' DEBUG_SYNC points to avoid lost signals
connect(con2,localhost,root,,);
let $wait_condition= select count(*)=0 from information_schema.processlist where state like "debug sync point: alter_table_before_open_tables";
source include/wait_condition.inc;
SET DEBUG_SYNC= 'now SIGNAL mtr_continue';
# Return execution for DROP TABLE
connection default;
--reap
# Return execution for ALTER TABLE
connection con1;
--error ER_NO_SUCH_TABLE
--reap
SET DEBUG_SYNC= 'RESET';
disconnect con1;
--source include/wait_until_disconnected.inc
connection default;
SET DEBUG_SYNC= 'RESET';
--echo End of 5.1 tests
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