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  1. MariaDB Server
  2. MDEV-18952

CHECK TABLE should use READ UNCOMMITED if innodb_force_recovery>=5

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    Description

      MDEV-15418 changed InnoDB to use the READ UNCOMMITTED isolation level when the transaction recovery is disabled by setting innodb_force_recovery to 5 or 6. Alas, CHECK TABLE would still internally use REPEATABLE READ. After merging the MDEV-18936 fix, this would cause a crash in the test innodb.ibuf_not_empty:

      CURRENT_TEST: innodb.ibuf_not_empty
      		 
      mysqltest: At line 50: query 'check table t1' failed: 2013: Lost connection to MySQL server during query
      		 
      …
      		 
      Version: '10.3.14-MariaDB-debug-log'  socket: '/dev/shm/10.3/mysql-test/var/tmp/mysqld.1.sock'  port: 16000  Source distribution
      		 
      2019-03-17 12:48:06 3 [ERROR] InnoDB: Failed to find tablespace for table `test`.`t1` in the cache. Attempting to load the tablespace with space id 5
      		 
      2019-03-17 12:48:06 3 [Warning] InnoDB: Allocated tablespace ID 5 for test/t1, old maximum was 0
      		 
      2019-03-17 12:48:06 3 [Warning] InnoDB: A transaction id in a record of table `test`.`t1` is newer than the system-wide maximum.
      		 
      mysqld: /mariadb/10.3/storage/innobase/trx/trx0sys.cc:62: static void ReadView::check_trx_id_sanity(trx_id_t, const table_name_t &): Assertion `0' failed.

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          is caused by

          Task - A task that needs to be done. MDEV-15132 Avoid accessing the TRX_SYS page

          • Major - Major loss of function.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-17742 innodb.ibuf_not_empty failed in buildbot with Assertion `0' failed in ReadView::check_trx_id_sanity

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15418 innodb_force_recovery=5 displays bogus warnings about too new transaction identifier

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-18936 Purge thread fails to exit on shutdown

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25886 CHECK TABLE crashes due to DB_MISSING_HISTORY in innodb_read_only mode

          • Major - Major loss of function.
          • Closed

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              marko Marko Mäkelä
              marko Marko Mäkelä
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                Updated:
                Resolved:

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