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  1. Core Server
  2. SERVER-5361

early $group should provide a hint to use an index matching the group key

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Aggregation Framework
    • Labels:
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      Description

      For an example query that could use this (assuming the appropriate index is there), see https://groups.google.com/forum/#!msg/mongodb-user/V5nO8gkgzbk/iI9F_faNPFsJ .

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. SERVER-4961 $group is taking 2x as long as collection.group()

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-4507 aggregation: optimize $group to take advantage of sorted sequences

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

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                • Created:
                  Updated:
                  Resolved: