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  1. Core Server
  2. SERVER-38138

$expr doesn't use indexes

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    • Icon: Improvement Improvement
    • Resolution: Duplicate
    • Icon: Major - P3 Major - P3
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    • 4.0.4
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    Description

      $expr doesn't use indexes at all with any expression, except with $eq and this happened after it was issued https://jira.mongodb.org/browse/SERVER-33364

      My issue specifically with $in, neither in $lookup nor in find() it uses indexes even on _id field

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            daniel.hatcher@mongodb.com Danny Hatcher (Inactive)
            hawkkero6000@gmail.com Hawk Kero
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