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Fix for MDEV-4117 @@global.relay_log_purge not per-master, conflicts between different masters in multisource replication

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The fix is to not change @relay_log_purge as part of the CHANGE MASTER.
(There is no logical reason why this is done in the current source)

mysql-test/suite/rpl/r/rpl_slave_status.result:
  Ensure that CHANGE MASTER doesn't change relay_log_purge
mysql-test/suite/rpl/t/rpl_slave_status.test:
  Ensure that CHANGE MASTER doesn't change relay_log_purge
sql/sql_repl.cc:
  Don't change relay_log_purge in CHANGE MASTER
This commit is contained in:
Michael Widenius
2014-01-14 19:00:38 +01:00
parent 2ddbe0ec81
commit 0a20d762af
3 changed files with 24 additions and 3 deletions
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2
sql/sql_repl.cc
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@ -3444,7 +3444,6 @@ bool change_master(THD* thd, Master_info* mi, bool *master_info_added)
}
if (need_relay_log_purge)
{
relay_log_purge= 1;
THD_STAGE_INFO(thd, stage_purging_old_relay_logs);
if (purge_relay_logs(&mi->rli, thd,
0 /* not only reset, but also reinit */,
@ -3458,7 +3457,6 @@ bool change_master(THD* thd, Master_info* mi, bool *master_info_added)
else
{
const char* msg;
relay_log_purge= 0;
/* Relay log is already initialized */
if (init_relay_log_pos(&mi->rli,
mi->rli.group_relay_log_name,