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10.4-MDEV-29684 Fixes for cluster wide write conflict resolving

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The rather recent thd_need_ordering_with() function does not take
high priority transactions' order in consideration. Chaged this
funtion to compare also transaction seqnos and favor earlier transaction.

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
This commit is contained in:
sjaakola
2022-10-12 15:07:20 +03:00
committed by Jan Lindström
parent 68cfcf9cb6
commit 0ff7f33c7b
1 changed files with 3 additions and 2 deletions
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5
sql/sql_class.cc
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@ -5230,8 +5230,9 @@ thd_need_ordering_with(const MYSQL_THD thd, const MYSQL_THD other_thd)
(e.g. InnoDB does it by keeping lock_sys.mutex locked)
*/
if (WSREP_ON &&
wsrep_thd_is_BF(const_cast<THD *>(thd), false) &&
wsrep_thd_is_BF(const_cast<THD *>(other_thd), false))
wsrep_thd_is_BF(thd, false) &&
wsrep_thd_is_BF(other_thd, false) &&
wsrep_thd_order_before(thd, other_thd))
return 0;
#endif /* WITH_WSREP */
rgi= thd->rgi_slave;