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  1. Core Server
  2. SERVER-53637

Allow collation to be specified for a $lookup sub-pipeline

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    Details

    • Backwards Compatibility:
      Fully Compatible
    • Sprint:
      Query Execution 2021-03-08, Query Optimization 2021-03-22, Query Optimization 2021-04-05, Query Optimization 2021-04-19, Query Optimization 2021-05-03, Query Optimization 2021-05-17

      Description

      As part of the resharding effort we need to run a pipeline with the collection's default collation, but then use the simple collation for a specific comparison concerning the chunk boundaries.

      This ticket tracks the work to add that ability. Note this is different and narrower than SERVER-25954, since we need this relatively soon and it is believed that SERVER-25954 is a pretty substantial engineering effort. 

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          is depended on by

          Task - A task that needs to be done. SERVER-53940 Support resuming resharding collection cloning for sharded collections with non-simple default collations

          • Major - P3 - Major loss of function.
          • Open
          is related to

          New Feature - A new feature of the product, which has yet to be developed. SERVER-25954 Support more granular collation specification

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

            Activity

              People

              Assignee:
              james.wahlin James Wahlin
              Reporter:
              charlie.swanson Charlie Swanson
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                Updated:
                Resolved: