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  1. Core Server
  2. SERVER-18027

Support aggregation $out to sharded collection

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    • Backwards Compatibility:
      Major Change
    • Epic Link:
    • Sprint:
      Query 2018-08-27, Query 2018-09-10
    • Case:

      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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          depends on

          Task - A task that needs to be done. SERVER-35895 Add ability for $out to write to remote hosts

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

          Task - A task that needs to be done. SERVER-35954 Build uniqueKey from the shard key if not present in user command

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

          Task - A task that needs to be done. SERVER-36123 Reject $out with mode: "replaceCollection" if the output collection is sharded

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-12280 allow $out to append to/merge with existing collection instead of replacing it

          • Major - P3 - Major loss of function.
          • Closed
          is depended on by

          New Feature - A new feature of the product, which has yet to be developed. SERVER-6025 Similar mysql syntax "INSERT ... SELECT ..." for sharded collection.

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Task - A task that needs to be done. SERVER-36114 Test sharded $out concurrently executing with chunk migrations

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

          Task - A task that needs to be done. DOCS-12024 Docs for SERVER-18027: Support aggregation $out to sharded collection

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

          New Feature - A new feature of the product, which has yet to be developed. SERVER-6025 Similar mysql syntax "INSERT ... SELECT ..." for sharded collection.

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          related to

          Task - A task that needs to be done. SERVER-35897 Support dropTarget false in $out

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

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                • Created:
                  Updated:
                  Resolved: