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  1. Core Server
  2. SERVER-57741

SBE should order projection fields ahead of expression fields in a $project stage

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    • Minor Change
    • ALL
    • Query Execution 2021-06-28, Query Execution 2021-07-12
    • 148

    Description

      The behavior of $project in the classic engine is to order projection fields ahead of fields which require expression evaluation. SBE engine doesn't seemed to follow this convention, which is producing failures on the aggregation fuzzers. We should fix the behavior to match that of classic engine.

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          is documented by

          Task - A task that needs to be done. DOCS-14609 [Server] Investigate changes in SERVER-57741: SBE should order projection fields ahead of expression fields in a $project stage

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

          Task - A task that needs to be done. SERVER-54582 Investigate modifying SBE projection implementation to apply inclusions before computed expressions

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

          Task - A task that needs to be done. SERVER-54078 [SBE] Improve perf of the bestbuy_agg_merge_wordcount benchmark suite

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

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              mohammad.dashti@mongodb.com Mohammad Dashti
              arun.banala@mongodb.com Arun Banala
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