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  1. WiredTiger
  2. WT-2333

Add a flag so drop doesn't block

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Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Done
    • WT2.7.0
    • WT2.8.0
    • None
    • None

    Description

      If a WT_SESSION::drop cannot get exclusive access to a handle, it returns EBUSY. In that case, MongoDB queues the drop, and all threads periodically retry all queued drops. Unfortunately, during periods where the schema lock is held (such as the final phase of checkpoints), that causes all threads to block.

      Instead, add a flag that MongoDB can set so that drop returns EBUSY immediately if it cannot acquire the schema lock (i.e., fails fast).

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          is depended on by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-22199 Collection drop command during checkpoint causes complete stall until end of checkpoint

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-21944 WiredTiger changes for 3.2.2

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-22146 WiredTiger changes for 3.3.1

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Task - A task that needs to be done. WT-1378 Add a way for schema operations to fail immediately if resources aren't available

          • Major - P3 - Major loss of function.
          • Closed

          Activity

            People

              michael.cahill@mongodb.com Michael Cahill (Inactive)
              michael.cahill@mongodb.com Michael Cahill (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: