3 commits

Author	SHA1	Message	Date
Sergey Vojtovich	c5e00fea10	MDEV-20867 - Perform careful review of "Server crashes with BACKUP STAGE and FLUSH TABLE table_name" ... Reverted original patch (c2e0a0b). For consistency with "LOCK TABLE <table_name> READ" and "FLUSH TABLES WITH READ LOCK", which are forbidden under "BACKUP STAGE", forbid "FLUSH TABLE <table_name> FOR EXPORT" and "FLUSH TABLE <table_name> WITH READ LOCK" as well. It'd allow consistent fixes for problems like MDEV-18643.	2020-02-13 01:27:14 +04:00
Monty	c2e0a0b175	Server crashes with BACKUP STAGE and FLUSH TABLE table_name ... Fixes MDEV-18067, MDEV-18068 and MDEV-18069 The problem was that FLUSH TABLES table_name combined with UNLOCK TABLES calls MDL_context::set_transaction_duration_for_all_locks(), which changed backup_locks from MDL_EXPLICT to MDL_TRANSACTION. Fixed by ensuring that set_transaction_duration_for_all_locks() doesn't touch BACKUP locks.	2019-10-20 14:46:38 +03:00
Monty	c53aab974b	Added syntax and implementation for BACKUP STAGE's ... Part of MDEV-5336 Implement LOCK FOR BACKUP - Changed check of Global_only_lock to also include BACKUP lock. - We store latest MDL_BACKUP_DDL lock in thd->mdl_backup_ticket to be able to downgrade lock during copy_data_between_tables()	2018-12-09 22:12:27 +02:00