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  1. Core Server
  2. SERVER-39591

RecoveryUnit::waitUntilDurable() should invariant against callers holding locks

    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 4.3.1
    • Affects Version/s: None
    • Component/s: Storage
    • None
    • Fully Compatible
    • Storage NYC 2019-05-20, Execution Team 2019-11-18

      MMAP's implementation had an invariant, but the other storage engine implementations appear not to have any.

      Locks should not be held while waitUntilDurable is called for two reasons: 1) it can take a long time to make data durable, so a lock should not be held that long for I/O; 2) we could run out of tickets and the lock that the caller has could stop the rest of the system from freeing up enough for he durability task to get a ticket, thus a ticketing deadlock.

      This requires fixing the failpoint in index builds that calls waitUntilDurable() with locks, curtesy of SERVER-39585 to unblock other work

            Assignee:
            dianna.hohensee@mongodb.com Dianna Hohensee (Inactive)
            Reporter:
            dianna.hohensee@mongodb.com Dianna Hohensee (Inactive)
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              Created:
              Updated:
              Resolved: