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  1. Core Server
  2. SERVER-64227

Remove $sum/$avg merging logic which handles old input data format from a shard after branching 6.0

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 6.1.0-rc0
    • None
    • None
    • Fully Compatible
    • QE 2022-05-02, QE 2022-05-16

    Description

      In SERVER-62940, we fixed $sum accumulator bug in spilling case and sharding case under FCV 6.0 because it involved changing over-the-wire data format from a shard to the merging side though the bug is apparently an incorrect result bug.

      When we branch for 6.1, we can remove the FCV gating and also serialization logic to compose a 'Object' data for $sum partial results.

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          has to be done after

          Bug - A problem which impairs or prevents the functions of the product. SERVER-62940 DocumentSourceGroup returns different results for in-memory group and spilled group when using $sum

          • Major - P3 - Major loss of function.
          • Closed
          has to be done before

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-65465 SBE Group should not use DoubleDoubleSummation for count

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

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              yoonsoo.kim@mongodb.com Yoon Soo Kim
              yoonsoo.kim@mongodb.com Yoon Soo Kim
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              Dates

                Created:
                Updated:
                Resolved: