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  1. MariaDB Server
  2. MDEV-24526

binlog rotate via FLUSH LOGS may obsolate binlog file for recovery too early

Details

    Description

      There's a race between FLUSH LOGS and binlog-group commit for Binlog-checkpoint notification which must be done *after* the committed group transactions' affected
      data are flushed to disk. However the notification may happen before that fore the reason
      FLUSH LOGS handler does to acquire necessary mutexes.

      A test case follows with a patch to be committed soon.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24530 binlog-optimize-thread-scheduling=0 case of binlog rotate via FLUSH LOGS may obsolate binlog file too eary

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-24302 RESET MASTER hangs as Innodb does not report on binlog checkpoint

          • 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-28948 FLUSH BINARY LOGS waits/hangs on mysql_mutex_unlock(&LOCK_index) forever

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

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            Elkin Andrei Elkin created issue -
            Elkin Andrei Elkin made changes -
            Field Original Value New Value
            Elkin Andrei Elkin made changes -
            Description There's a race between {{FLUSH LOGS}} and binlog-group commit for Binlog-checkpoint notification which must be done **after** the committed group transactions' affected
            data are flushed to disk. However the notification may happen before that fore the reason
            {{FLUSH LOGS}} handler does to acquire necessary mutexes.

            A test case follows with a patch to committed soon.             		There's a race between {{FLUSH LOGS}} and binlog-group commit for Binlog-checkpoint notification which must be done **after** the committed group transactions' affected
            data are flushed to disk. However the notification may happen before that fore the reason
            {{FLUSH LOGS}} handler does to acquire necessary mutexes.

            A test case follows with a patch to be committed soon.
            Elkin Andrei Elkin made changes -
            Elkin Andrei Elkin made changes -
            Status Open [ 1 ] In Progress [ 3 ]
            Elkin Andrei Elkin made changes -
            Assignee Andrei Elkin [ elkin ] Sujatha Sivakumar [ sujatha.sivakumar ]
            Status In Progress [ 3 ] In Review [ 10002 ]
            Elkin Andrei Elkin made changes -
            Attachment _binlog_checkpoint_stress.test [ 55524 ]
            sujatha.sivakumar Sujatha Sivakumar (Inactive) made changes -
            Assignee Sujatha Sivakumar [ sujatha.sivakumar ] Andrei Elkin [ elkin ]
            Status In Review [ 10002 ] Stalled [ 10000 ]
            Elkin Andrei Elkin made changes -
            Summary binlog rotate via FLUSH LOGS may obsolate binlog file too eary binlog rotate via FLUSH LOGS may obsolate binlog file for recovery too early
            Elkin Andrei Elkin made changes -
            Fix Version/s 10.2.38 [ 25207 ]
            Fix Version/s 10.3.29 [ 25206 ]
            Fix Version/s 10.4.19 [ 25205 ]
            Fix Version/s 10.5.10 [ 25204 ]
            Fix Version/s 10.2 [ 14601 ]
            Fix Version/s 10.3 [ 22126 ]
            Fix Version/s 10.4 [ 22408 ]
            Fix Version/s 10.5 [ 23123 ]
            Resolution Fixed [ 1 ]
            Status Stalled [ 10000 ] Closed [ 6 ]
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 117815 ] MariaDB v4 [ 158751 ]
            alice Alice Sherepa made changes -

            People

              Elkin Andrei Elkin
              Elkin Andrei Elkin
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              Dates

                Created:
                Updated:
                Resolved:

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