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MDEV-26352 : Add new thread states for certain WSREP scenarios

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This adds following new thread states:
* waiting to execute in isolation - DDL is waiting to execute in TOI mode.
* waiting for TOI DDL - some other statement is waiting for DDL to complete.
* waiting for flow control - some statement is paused while flow control is in effect.
* waiting for certification - the transaction is being certified.
This commit is contained in:
Jan Lindström
2021-08-20 12:54:53 +03:00
parent 21ce69123c
commit 1bc82aaf0a
15 changed files with 137 additions and 51 deletions
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8
sql/sql_parse.cc
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@@ -6126,7 +6126,12 @@ finish:
thd->wsrep_consistency_check= NO_CONSISTENCY_CHECK;
if (wsrep_thd_is_toi(thd) || wsrep_thd_is_in_rsu(thd))
{
WSREP_DEBUG("mysql_execute_command for %s", wsrep_thd_query(thd));
THD_STAGE_INFO(thd, stage_waiting_isolation);
wsrep_to_isolation_end(thd);
}
/*
Force release of transactional locks if not in active MST and wsrep is on.
*/
@@ -7890,7 +7895,8 @@ static bool wsrep_mysql_parse(THD *thd, char *rawbuf, uint length,
DBUG_ASSERT(!debug_sync_set_action(thd, STRING_WITH_LEN(act)));
});
WSREP_DEBUG("wsrep retrying AC query: %lu %s",
thd->wsrep_retry_counter, wsrep_thd_query(thd));
thd->wsrep_retry_counter,
wsrep_thd_query(thd));
wsrep_prepare_for_autocommit_retry(thd, rawbuf, length, parser_state);
if (thd->lex->explain)
delete_explain_query(thd->lex);