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  1. Core Server
  2. SERVER-59831

WTUniqueIndex::_insert expects secondaries to pass in dupsAllowed=true

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 5.2.0
    • None
    • None
    • Fully Compatible
    • ALL
    • Execution Team 2021-11-15, Execution Team 2021-11-29
    • 152

    Description

      Using dupsAllowed=false when inserting into a secondary unique index results in inserting + removing on a "prefix" document to serialize access to enforce unique constraints.

      However the preceding comment states the expectation that only primaries are executing that code path.

      This results in unnecessary writes to these prefix documents. Moreover, these writes can result in out of order update chains as secondaries can process oplog entries out of order.

      Attachments

        Issue Links

          depends on

          Bug - A problem which impairs or prevents the functions of the product. SERVER-61459 ShardingCatalogManager::assignKeyRangeToZone() reads stale version of CollectionType while running locally on config server primary

          • Major - P3 - Major loss of function.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-60716 Remove out of order writes on unique, non _id indexes

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-60037 Enable the ordered timestamp assertion in MongoDB

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-61458 Calling RSLocalClient::queryOnce(kMajorityReadConcern) causes subsequent local writes in same OperationContext to also read stale data

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

          Task - A task that needs to be done. SERVER-61499 Complete TODO listed in SERVER-60716

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

          Build Failure - WT-7853 Validate the update chain before we attempt to insert it into the history store

          • Blocker - P1 - Blocks development and/or testing work, production could not run.
          • Closed

          Activity

            People

              yuhong.zhang@mongodb.com Yuhong Zhang
              daniel.gottlieb@mongodb.com Daniel Gottlieb (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: