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  1. Core Server
  2. SERVER-42175

WiredTigerRecordStore::reclaimOplog can block for extended periods of time

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Gone away
    • Affects Version/s: 3.4.3, 3.6.3
    • Fix Version/s: None
    • Component/s: Replication, Storage
    • Labels:
      None
    • Operating System:
      ALL
    • Sprint:
      Execution Team 2019-09-09

      Description

      In the case where we're truncating a very large amount of oplog entries, WiredTigerRecordStore::reclaimOplog may hold its locks (Global IX since 3.6, DB/Collection IX for the oplog in 3.4) for an extended period of time, blocking operations such as stepdown which may require a global X lock.

      One potential solution to this problem is for reclaimOplog to yield all locks periodically.

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          Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-30727 Secondary stuck in loop of current election

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-43322 Add tracking tools for measuring OplogStones performance

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

          Bug - A problem which impairs or prevents the functions of the product. WT-4011 Checkpoint should not read truncated pages

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-34129 Don't hold database or collection locks during oplog truncation

          • Critical - P2 - Crashes, loss of data, severe memory leak.
          • Closed

            Activity

              People

              Assignee:
              backlog-server-execution Backlog - Storage Execution Team
              Reporter:
              matthew.russotto Matthew Russotto
              Participants:
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                Dates

                Created:
                Updated:
                Resolved: