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refs codership/mysql-wsrep#201

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- Fixes query cache so that it is aware of wsrep_sync_wait.
  Query cache would return (possibly stale) results to the
  client, regardless of the value of wsrep_sync_wait.
- Includes the test case that reproduced the issue.
This commit is contained in:
Daniele Sciascia
2015-10-20 17:54:14 +02:00
committed by Nirbhay Choubey
parent c1ea0570af
commit ace86a2375
8 changed files with 77 additions and 7 deletions
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6
sql/sql_class.cc
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@@ -1213,6 +1213,7 @@ THD::THD()
wsrep_mysql_replicated = 0;
wsrep_TOI_pre_query = NULL;
wsrep_TOI_pre_query_len = 0;
wsrep_sync_wait_gtid= WSREP_GTID_UNDEFINED;
#endif
/* Call to init() below requires fully initialized Open_tables_state. */
reset_open_tables_state(this);
@@ -1628,6 +1629,7 @@ void THD::init(void)
wsrep_mysql_replicated = 0;
wsrep_TOI_pre_query = NULL;
wsrep_TOI_pre_query_len = 0;
wsrep_sync_wait_gtid= WSREP_GTID_UNDEFINED;
/*
@@wsrep_causal_reads is now being handled via wsrep_sync_wait, update it
@@ -2361,6 +2363,10 @@ void THD::cleanup_after_query()
rgi_slave->cleanup_after_query();
#endif
#ifdef WITH_WSREP
wsrep_sync_wait_gtid= WSREP_GTID_UNDEFINED;
#endif /* WITH_WSREP */
DBUG_VOID_RETURN;
}