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* MDEV-17658 change the structure of mysql.user tableSergei Golubchik2018-12-121-0/+1
| | | | | | Implement User_table_json. Fix scripts to use mysql.global_priv. Fix tests.
* Added new MDL_BACKUP locks for all backup stagesMonty2018-12-091-3/+70
| | | | | | | | | | | | | | | Part of MDEV-5336 Implement LOCK FOR BACKUP - Added new locks to MDL_BACKUP for all stages of backup locks and a new MDL lock needed for backup stages. - Renamed MDL_BACKUP_STMT to MDL_BACKUP_DDL - flush_tables() takes a new parameter that decides what should be flushed. - InnoDB, Aria (transactional tables with checksums), Blackhole, Federated and Federatedx tables are marked to be safe for online backup. We are using MDL_BACKUP_TRANS_DML instead of MDL_BACKUP_DML locks for these which allows any DML's to proceed for these tables during the whole backup process until BACKUP STAGE COMMIT which will block the final commit.
* Combine GLOBAL and COMMIT namespaces into BACKUP namespace.Sergey Vojtovich2018-12-091-2/+2
| | | | | | | Part of MDEV-5336 Implement LOCK FOR BACKUP Other things: - Added printing of MDL locks to DBUG.
* Create 'main' test directory and move 't' and 'r' thereMichael Widenius2018-03-291-0/+22