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  1. Core Server
  2. SERVER-44492

Use unique collections names in map_reduce_with_chunk_migrations.js concurrency test

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.3.1
    • Component/s: None
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Linked BF Score:
      50

      Description

      The test runs concurrent mapReduce commands with output mode "replace" against the same target collection. Since "replace" involves dropping the target collection as part of the final rename operation, there's a small window where a mapReduce starts after the target is dropped and not yet renamed. If this happens, the second MR will fail on it's final rename due to this assertion.

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              • Created:
                Updated:
                Resolved: