mariadb/mysql-test/include/wait_for_binlog_checkpoint.inc
unknown cd0970c480 MDEV-532: Fix some race conditions in test cases.
With MDEV-532, the binlog_checkpoint event is logged asynchronously
from a binlog background thread. This causes some sporadic failures
in some test cases whose output depends on order of events in
binlog.

Fix using an include file that waits until the binlog checkpoint
event has been logged before proceeding with the test case.
2012-12-17 12:49:11 +01:00

53 lines
1.2 KiB
PHP

# include/wait_for_binlog_checkpoint.inc
#
# SUMMARY
#
# Wait until binlog checkpoint has been logged for current binlog file.
# This is useful to avoid races with output difference for binlog
# checkpoints, as these are logged asynchronously from the binlog
# background thread.
#
# USAGE:
#
# --source include/wait_for_binlog_checkpoint.inc
let $_wait_count= 300;
let $_found= 0;
while ($_wait_count)
{
dec $_wait_count;
let $_cur_binlog= query_get_value(SHOW MASTER STATUS, File, 1);
let $_more= 1;
let $_row= 1;
while ($_more)
{
let $_event= query_get_value(SHOW BINLOG EVENTS IN "$_cur_binlog", Event_type, $_row);
if ($_event == "No such row")
{
let $_more= 0;
}
if ($_event == "Binlog_checkpoint")
{
let $_info= query_get_value(SHOW BINLOG EVENTS IN "$_cur_binlog", Info, $_row);
if (`SELECT INSTR("$_info", "$_cur_binlog") != 0`)
{
let $_more= 0;
let $_wait_count= 0;
let $_found= 1;
}
}
inc $_row;
}
if ($_wait_count)
{
real_sleep 0.1;
}
}
if (!$_found)
{
eval SHOW BINLOG EVENTS IN "$_cur_binlog";
--die ERROR: failed while waiting for binlog checkpoint $_cur_binlog
}