Uploaded image for project: 'WiredTiger'
  1. WiredTiger
  2. WT-3356

Use atomic reads of rwlocks and handle missing signals

    • Type: Icon: Bug Bug
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • WT2.9.3, 3.2.14, 3.4.5, 3.5.9
    • Affects Version/s: None
    • Component/s: None
    • None
    • Storage 2017-06-19

      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.

            Assignee:
            michael.cahill@mongodb.com Michael Cahill (Inactive)
            Reporter:
            michael.cahill@mongodb.com Michael Cahill (Inactive)
            Votes:
            0 Vote for this issue
            Watchers:
            5 Start watching this issue

              Created:
              Updated:
              Resolved: