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  1. MariaDB Server
  2. MDEV-24915

Galera conflict resolution is unnecessarily complex

Details

    Description

      The fix of MDEV-23328 introduced a background thread for killing conflicting transactions. In 10.6, thanks to the refactoring that was conducted in MDEV-24671, the high-priority ("brute-force") applier thread can kill the conflicting transactions itself, before waiting for the locks to be finally released (after the conflicting transactions have been rolled back), in the lock_wait() function.

      This will also allow us to remove the Galera hack LockGGuard that had to be added in MDEV-20612, and remove Galera-related function parameters from lock creation.

      Attachments

        Issue Links

          is caused by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-23328 Server hang due to Galera lock conflict resolution

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-18534 galera_sr.GCF-1018B: Test failure: mysqltest: mysqltest: Can't connect to local MySQL server; signal 6

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-20612 Improve InnoDB lock_sys scalability

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24671 Assertion failure in lock_wait_table_reserve_slot()

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24967 Signal 11 on ha_innodb.cc::bg_wsrep_kill_trx line 18611

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24966 Galera multi-master regression

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25114 Crash: WSREP: invalid state ROLLED_BACK (FATAL)

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

          Activity

            Transition Time In Source Status Execution Times
            Marko Mäkelä made transition -
            Open In Progress
            		6m 14s 1
            Marko Mäkelä made transition -
            In Progress Closed
            		4h 3m 1

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              marko Marko Mäkelä
              marko Marko Mäkelä
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              Dates

                Created:
                Updated:
                Resolved:

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