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  1. MariaDB Server
  2. MDEV-516

INSERT ON DUPLICATE KEY UPDATE + innodb_autoinc_lock_mode=1 broken, fixed in percona

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 5.5.27, 5.3.8, 5.2.12, 5.1.62
    • Fix Version/s: 5.5.28, 5.3.9
    • Component/s: None
    • Labels:
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      Description

      From percona: https://bugs.launchpad.net/percona-server/+bug/1035225

      Concurrent INSERT ... ON DUPLICATE KEY UPDATE statements on a table with
      an AUTO_INCREMENT column may result in spurious duplicate key errors
      (and, as a result, lost data due to some rows being updated rather than
      inserted) with the default value of innodb_autoinc_lock_mode=1.

      Tested on 5.5.27 but 5.3.8 is most probably affected too.

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            Assignee:
            monty Michael Widenius
            Reporter:
            pomyk Patryk Pomykalski
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