mariadb/mysql-test/suite/parts/t/partition_debug_sync_innodb-master.opt at 87a1bb5e6e989b4cb384aa93b9127cdbb9740ddb - mirror/mariadb - May the force be without you: git.fucktheforce.de

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Mattias Jonsson 3b897f2bc5 Bug#50561: ALTER PARTITIONS does not have adequate lock, breaks with

concurrent I_S query

There were two problem:
1) MYSQL_LOCK_IGNORE_FLUSH also ignored name locks
2) there was a race between abort_and_upgrade_locks and
   alter_close_tables
   (i.e. remove_table_from_cache and
    close_data_files_and_morph_locks)

Which allowed the table to be opened with MYSQL_LOCK_IGNORE_FLUSH flag
resulting in renaming a partition that was already in use,
which could cause the table to be unusable.

Solution was to not allow IGNORE_FLUSH to skip waiting for
a named locked table.

And to not release the LOCK_open mutex between the
calls to remove_table_from_cache and
close_data_files_and_morph_locks by merging the functions
abort_and_upgrade_locks and alter_close_tables.

2010-03-17 15:10:41 +01:00

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--innodb_file_per_table=1