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#
# This test ensures that a table with engine=memory is kept consistent with
# the slave when the master restarts. That is, when the master is restarted, it
# should binlog a new TRUNCATE TABLE command for tables with MEMORY engines,
# such that after the slave executes these events, its MEMORY-engine tables
# should be empty.
#
# References:
# MDEV-25607: Auto-generated DELETE from HEAP table can break replication
#
--source include/master-slave.inc
--connection master
create table t (val int) engine=MEMORY;
-- echo # DELETE trigger should never be activated
create trigger tr after delete on t for each row update t2 set val = 1;
insert into t values (1),(2);
--source include/save_master_gtid.inc
--connection slave
--source include/sync_with_master_gtid.inc
-- echo # Check pre-restart values
--let $diff_tables= master:test.t,slave:test.t
--source include/diff_tables.inc
--echo # Restarting master should empty master and slave `t`
--connection master
--let $seq_no_before_restart= `SELECT REGEXP_REPLACE(@@global.gtid_binlog_pos, "0-1-", "")`
--let $rpl_server_number= 1
--source include/rpl_restart_server.inc
--connection master
--echo # Validating MEMORY table on master is empty after restart
--let $table_size= `select count(*) from t`
if ($table_size)
{
--echo # MEMORY table is not empty
--die MEMORY table is not empty
}
--let $seq_no_after_restart= `SELECT REGEXP_REPLACE(@@global.gtid_binlog_pos, "0-1-", "")`
if ($seq_no_before_restart == $seq_no_after_restart)
{
--echo # Event to empty MEMORY table was not binlogged
--die Event to empty MEMORY table was not binlogged
}
--let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
--let $datadir=`select @@datadir`
--let assert_file= $MYSQLTEST_VARDIR/tmp/binlog_decoded.out
--echo # MYSQL_BINLOG datadir/binlog_file --result-file=assert_file
--exec $MYSQL_BINLOG $datadir/$binlog_file --result-file=$assert_file
--let assert_text= Query to truncate the MEMORY table should be the contents of the new event
--let assert_count= 1
--let assert_select= TRUNCATE TABLE
--source include/assert_grep.inc
--echo # Ensuring slave MEMORY table is empty
--connection master
--source include/save_master_gtid.inc
--connection slave
--source include/sync_with_master_gtid.inc
--source include/diff_tables.inc
--echo # Ensure new events replicate correctly
--connection master
insert into t values (3),(4);
--source include/save_master_gtid.inc
--connection slave
--source include/sync_with_master_gtid.inc
--echo # Validate values on slave, after master restart, do not include those inserted previously
--source include/diff_tables.inc
--echo #
--echo # Cleanup
--connection master
drop table t;
--source include/rpl_end.inc
--echo # End of rpl_memory_engine_truncate_on_restart.test
|
