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# ==== Purpose ====
#
# Verify if the slave SQL thread is avoiding to update position when a Rotate
# event is applied in the middle of a group.
#
# This test will execute two INSERT statements in the master and will use
# a debug sync point in the slave to rotate the relay log (restarting the IO
# thread) after each Write_rows event be queued into the relay log.
#
# The slave SQL thread should not update its position while in the middle of
# the transaction.
#
# After the last stop of the IO thread, the SQL thread will also be stopped.
#
# Both threads will be started to finish the test.
#
# A problematic SQL thread will restart in the middle of the transaction and
# will skip the first INSERT statement.
#
# ==== Related Bugs and Worklogs ====
#
# Bug #18482854 RPL : ROTATE_LOG_EVENT INCORRECTLY ADVANCES GROUP_RELAY_LOG_POS
#               IN A GROUP
#
--source include/have_binlog_format_row.inc
--source include/have_innodb.inc
--source include/not_gtid_enabled.inc
--source include/master-slave.inc
# Test should run only on debug build
source include/have_debug.inc;
source include/have_debug_sync.inc;

--disable_query_log
call mtr.add_suppression("The slave coordinator and worker threads are stopped, possibly leaving data in inconsistent state");
--enable_query_log

--echo # Initial setup
--source include/rpl_connection_master.inc
CREATE TABLE t1 (c1 INT) ENGINE=InnoDB;

--echo # Sync slave with master and setup debug sync point
--source include/sync_slave_sql_with_master.inc
SET @save_debug=@@global.debug;
SET GLOBAL DEBUG='d,stop_io_after_reading_write_rows_log_event';

--echo # Insert the data in the master
--source include/rpl_connection_master.inc

--let iterations= 2
--let $inserts= 0
BEGIN;
while ($inserts < $iterations)
{
  --eval INSERT INTO t1 (c1) VALUES ($inserts)
  --inc $inserts
}
COMMIT;

--echo # Restart the IO thread keeping SQL thread running until last relay log split

--source include/rpl_connection_slave.inc
--let $restarts= $iterations

while ($restarts)
{
  --source include/wait_for_slave_io_to_stop.inc
  --dec $restarts
  if ($restarts)
  {
    START SLAVE IO_THREAD;
  }
}

--echo # Stop the SQL thread (it should be in the middle of the transaction/group)
--let $slave_sql_errno= convert_error(ER_MTS_INCONSISTENT_DATA)
--source include/stop_slave_sql.inc

--echo # Remove the debug point and restart the both threads
SET GLOBAL DEBUG= @save_debug;
--source include/start_slave.inc

--echo # Do one more insert on master and then sync slave with master
--source include/rpl_connection_master.inc
--eval INSERT INTO t1 (c1) VALUES ($inserts)
--source include/sync_slave_sql_with_master.inc

--echo # Now compare master and slave's t1 table data
--source include/rpl_connection_master.inc
--let diff_tables= master:t1, slave:t1
--source include/diff_tables.inc

--echo # Cleanup
--source include/rpl_connection_master.inc
DROP TABLE t1;
--source include/rpl_end.inc