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  1. Documentation
  2. DOCS-12024

Docs for SERVER-18027: Support aggregation $out to sharded collection

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    Description

      Description

      Description:

      In brief, $out with modes "insertDocuments" and "replaceDocuments" can write to a sharded collection.

      $out with mode "replaceCollection" is prohibited when the output collection is sharded.

      See the $out design document for details.

      Engineering Ticket Description:

      For aggregations in a sharded cluster, it would be useful for the $out pipeline operator to support output to a sharded collection, to support use cases where the result set of the aggregation is large.

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            Unassigned Unassigned
            kay.kim@mongodb.com Kay Kim (Inactive)
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              Created:
              Updated:
              Resolved:
              5 years, 23 weeks, 1 day ago