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  1. Core Server
  2. SERVER-85790

Innocuous change in jstests/libs/optimizer_utils.js causes consistent system failures

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

      (Ticket based on a Slack thread.)

      I've consistently gotten system failures for version_burn_in_gen on a series of (what I think) as simple JS test changes:
      1 2 3 4 5 6 7 8.

      In questioning my sanity, I also ran a patch against the base commit, which completes without error.

      Eventually, I landed on this diff as being a minimal reproduction of the system failure... but for the life of me, I can't figure out why. That this patch and this other patch both pass version_burn_in_gen adds to my suspicion that the change to jstests/libs/optimizer_utils.js is the culprit

      Does anyone have insight into this? This seems like a pretty big nuisance at minimum, a potentially serious bug at worst.

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            jacob.evans@mongodb.com Jacob Evans
            william.qian@mongodb.com William Qian
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