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  1. Core Server
  2. SERVER-42175

WiredTigerRecordStore::reclaimOplog can block for extended periods of time

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Gone away
    • 3.4.3, 3.6.3
    • None
    • Replication, Storage
    • None
    • ALL
    • 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

              backlog-server-execution Backlog - Storage Execution Team
              matthew.russotto@mongodb.com Matthew Russotto
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              Dates

                Created:
                Updated:
                Resolved: