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  1. Core Server
  2. SERVER-41803

Standalone server crash with 'Unique index cursor seeing multiple records for key { : null } '

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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Critical - P2 Critical - P2
    • None
    • Affects Version/s: 4.0.4, 4.0.10
    • Component/s: Index Maintenance
    • Labels:
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    • ALL
      1. Have an unique index on a field.
      2. Have multiple documents without that indexed field
      3. Make a query with { field: {$exists: false } }

      Mongo server crashes when it sees multiple records for key 'null' in an unique index. It won't restart unless the systemd service has endless respawn configured.

        1. mongo-crash-log.log
          13 kB

            Assignee:
            daniel.hatcher@mongodb.com Danny Hatcher (Inactive)
            Reporter:
            h-line Lauri Hälinen
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              Created:
              Updated:
              Resolved: