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# ==== Purpose ==== # # Verify if the MTS SQL thread will became unresponsive after the slave # applied a partial transaction (without the XID event) followed by a # ROTATE event caused by IO thread reconnection when GTIDs and auto # positioning are enabled. # # ==== Related Bugs and Worklogs ==== # # BUG#17326020 ASSERTION ON SLAVE AFTER STOP/START SLAVE USING MTS+GTID # REPLICATION # BUG#18885916 RELAY LOG WITHOUT XID_LOG_EVENT MAY CASE PARALLEL # REPLICATION HANG # # ==== Implementation ==== # # This test uses debug points on the slave to make the # IO thread to stop right after queuing a WRITE_ROWS log event. # # By doing this, the relay log file with the partial transaction # will contain: [GTID,] QUERY(BEGIN), TABLE_MAP and WRITE_ROWS, but # won't have the XID for the transaction. # # After reconnecting to the master, if the slave is configured with # GTID and auto positioning, the IO thread will request the whole # transaction again. # # The test case will then sync the slave with the master and verify # that all data was correctly applied on slave. # --source include/not_group_replication_plugin.inc # This test case uses a debug point based on RBR --source include/have_binlog_format_row.inc --source include/have_debug.inc --source include/master-slave.inc --source include/rpl_connection_slave.inc # Prepare the slave IO thread to stop after queuing a WRITE_ROWS event SET @save_debug=@@global.debug; SET GLOBAL DEBUG= "d,stop_io_after_reading_write_rows_log_event"; # Put some data in to the master --source include/rpl_connection_master.inc CREATE TABLE t1 (c1 INT) ENGINE=InnoDB; # This transaction will be split BEGIN; INSERT INTO t1 (c1) VALUES (1); COMMIT; # This transaction will not be split BEGIN; INSERT INTO t1 (c1) VALUES (2); COMMIT; # Wait the slave IO thread to reach the debug point --source include/rpl_connection_slave.inc --source include/wait_for_slave_io_to_stop.inc # Remove the debug point, so the IO thread will not stop after # queuing a WRITE_ROWS event anymore SET GLOBAL DEBUG= @save_debug; # Restart slave I/O thread --source include/start_slave_io.inc # Sync the slave with the master --source include/rpl_connection_master.inc --source include/sync_slave_sql_with_master.inc # Final data verification --source include/rpl_connection_master.inc --source include/sync_slave_sql_with_master.inc --let diff_tables= master:t1, slave:t1 --source include/diff_tables.inc # Cleanup --source include/rpl_connection_master.inc DROP TABLE t1; --source include/rpl_end.inc