Hi Sujatha,

On Mon, Jan 4, 2021 at 11:45 AM sujatha <sujatha.sivakumar@mariadb.com> wrote:

+ for (TABLE_LIST *tables= rgi->tables_to_lock; tables;
+ tables= tables->next_global)
+ {
+ if (slave_run_triggers_for_rbr)
{
tables->trg_event_map= new_trg_event_map;
lex->query_tables_last= &tables->next_global;
}
+ else if (!WSREP_ON)
+ {
+ tables->slave_fk_event_map= new_trg_event_map;
+ lex->query_tables_last= &tables->next_global;
+ }

Why is prelocking not done when WSREP_ON ? (or WSREP(thd) ) In my opinion it should be reasoned here with comment, many of our customers actually use Galera as master-slave setup. Did you test your testcase with Galera setup and did you check Galera test results on bb ?

Regards,

Jan