#--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';
SET DEBUG_SYNC= 'rm_table_no_locks_before_binlog SIGNAL delete_done';
DROP TABLE IF EXISTS t2;
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