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  1. Core Server
  2. SERVER-44477

Map reduce with mode "merge" to an existing sharded collection may drop and recreate the target if no docs exist on the primary shard

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: 3.6.15, 4.0.13, 4.2.1
    • Fix Version/s: 3.6.17, 4.2.3, 4.0.15
    • Component/s: None
    • Labels:
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Backport Requested:
      v4.0, v3.6
    • Sprint:
      Query 2019-12-02, Query 2019-12-16, Query 2019-12-30, Query 2020-01-13

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        related to

        Task - A task that needs to be done. SERVER-42511 Remove query knob internalQueryUseAggMapReduce

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

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              Dates

              • Created:
                Updated:
                Resolved: