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MDEV-6120: When slave stops with error, error message should indicate the failing GTID

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If replication breaks in GTID mode, it is not trivial to determine the GTID of
the failing event group. This is a problem, as such GTID is needed eg. to
explicitly set @@gtid_slave_pos to skip to after that event group, or to
compare errors on different servers, etc.

Fix by ensuring that relevant slave errors logged to the error log include the
GTID of the event group containing the problem event.
This commit is contained in:
Kristian Nielsen
2014-06-25 15:17:03 +02:00
parent 00467e136e
commit 86362129a2
14 changed files with 268 additions and 106 deletions
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14
sql/rpl_parallel.cc
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@@ -388,7 +388,7 @@ handle_rpl_parallel_thread(void *arg)
{
DEBUG_SYNC(thd, "rpl_parallel_start_waiting_for_prior_killed");
thd->send_kill_message();
slave_output_error_info(rgi->rli, thd);
slave_output_error_info(rgi, thd);
signal_error_to_sql_driver_thread(thd, rgi, 1);
/*
Even though we were killed, we need to continue waiting for the
@@ -467,7 +467,7 @@ handle_rpl_parallel_thread(void *arg)
if (res < 0)
{
/* Error. */
slave_output_error_info(rgi->rli, thd);
slave_output_error_info(rgi, thd);
signal_error_to_sql_driver_thread(thd, rgi, 1);
}
else if (!res)
@@ -514,7 +514,7 @@ handle_rpl_parallel_thread(void *arg)
if (unlikely(err) && !rgi->worker_error)
{
slave_output_error_info(rgi->rli, thd);
slave_output_error_info(rgi, thd);
signal_error_to_sql_driver_thread(thd, rgi, err);
}
if (end_of_group)
@@ -1018,10 +1018,11 @@ rpl_parallel_thread_pool::release_thread(rpl_parallel_thread *rpt)
if it is still available. Otherwise a new worker thread is allocated.
*/
rpl_parallel_thread *
rpl_parallel_entry::choose_thread(Relay_log_info *rli, bool *did_enter_cond,
rpl_parallel_entry::choose_thread(rpl_group_info *rgi, bool *did_enter_cond,
PSI_stage_info *old_stage, bool reuse)
{
uint32 idx;
Relay_log_info *rli= rgi->rli;
rpl_parallel_thread *thr;
idx= rpl_thread_idx;
@@ -1066,7 +1067,7 @@ rpl_parallel_entry::choose_thread(Relay_log_info *rli, bool *did_enter_cond,
debug_sync_set_action(rli->sql_driver_thd,
STRING_WITH_LEN("now SIGNAL wait_queue_killed"));
};);
slave_output_error_info(rli, rli->sql_driver_thd);
slave_output_error_info(rgi, rli->sql_driver_thd);
return NULL;
}
else
@@ -1417,7 +1418,8 @@ rpl_parallel::do_event(rpl_group_info *serial_rgi, Log_event *ev,
instead re-use a thread that we queued for previously.
*/
cur_thread=
e->choose_thread(rli, &did_enter_cond, &old_stage, typ != GTID_EVENT);
e->choose_thread(serial_rgi, &did_enter_cond, &old_stage,
typ != GTID_EVENT);
if (!cur_thread)
{
/* This means we were killed. The error is already signalled. */