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  1. MariaDB Server
  2. MDEV-10907

MTR and server writes can interleave in the error log

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 5.5(EOL), 10.0(EOL), 10.1(EOL), 10.2(EOL)
    • 5.5.53
    • Platform Windows, Tests
    • None

    Description

      mtr writes to the server error log to mark current test.
      Server writes to its error log at the same time.

      On Windows, these writes can interleave, since appends to the log file are not atomic.
      Sometimes, some lines from server get lost. Sometimes some lines from mtr get lost
      This confuses MTR.

      An example output from
      http://buildbot.askmonty.org/buildbot/builders/win32-debug/builds/1117/steps/test/logs/mysqld.1.err.3
      showing mtr overwriting server output

      CURRENT_TEST: main.flush_block_commit_notembedded
      d/sql//Debug/mysqld.exe (root[root] @ localhost [::1]): Normal shutdown

      Attachments

        Activity

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          wlad Vladislav Vaintroub created issue -
          wlad Vladislav Vaintroub made changes -
          Field Original Value New Value
          Fix Version/s 5.5.53 [ 22106 ]
          Fix Version/s 5.5 [ 15800 ]
          Resolution Fixed [ 1 ]
          Status Open [ 1 ] Closed [ 6 ]
          serg Sergei Golubchik made changes -
          Workflow MariaDB v3 [ 77257 ] MariaDB v4 [ 150974 ]

          People

            wlad Vladislav Vaintroub
            wlad Vladislav Vaintroub
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            Dates

              Created:
              Updated:
              Resolved:

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