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#
# Purpose:
# When the mysql.gtid_slave_pos table uses the InnoDB engine, and mysqld
# starts, it reads the table and begins a transaction. After mysqld reads the
# value, it should end the transaction and release all associated locks.
# The bug reported in DBAAS-7828 shows that when autocommit is off, the locks
# are not released, resulting in indefinite hangs on future attempts to change
# gtid_slave_pos. This test ensures its fix such that the locks are properly
# released.
#
# References:
# DBAAS-7828: Primary/replica: configuration change of "autocommit=0" can
# not be applied
#
--source include/have_innodb.inc
--source include/have_log_bin.inc
# Reading gtid_slave_pos table is format independent so just use one for
# reduced test time
--source include/have_binlog_format_row.inc
--let old_slave_pos_engine= query_get_value(SHOW TABLE STATUS FROM mysql LIKE 'gtid_slave_pos', Engine, 1)
# Use a transactional engine
ALTER TABLE mysql.gtid_slave_pos ENGINE=innodb;
--echo # Restart the server so mysqld reads the gtid_slave_pos using innodb
--write_line wait $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
--shutdown_server
--source include/wait_until_disconnected.inc
--write_line restart $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
--enable_reconnect
--source include/wait_until_connected_again.inc
--echo # Set gtid_slave_pos should not hang
SET GLOBAL gtid_slave_pos=@@gtid_binlog_pos;
COMMIT;
# Revert table type
--disable_query_log
--eval ALTER TABLE mysql.gtid_slave_pos ENGINE=$old_slave_pos_engine
--enable_query_log
RESET MASTER;
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