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  1. WiredTiger
  2. WT-3356

Use atomic reads of rwlocks and handle missing signals

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • WT2.9.3, 3.2.14, 3.4.5, 3.5.9
    • None
    • None
    • Storage 2017-06-19

    Description

      Since WT-3345 was merged, we have seen some assertion failures from stress tests on PPC.

      Further testing with test_rwlock has reproduced the same assertion failures. It appears that a writelock can race with queued readers.

      In addition, testing by users has hit apparent deadlock where readlock requests have stalled and no threads make progress.

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            michael.cahill@mongodb.com Michael Cahill
            michael.cahill@mongodb.com Michael Cahill
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            Dates

              Created:
              Updated:
              Resolved: