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  1. Core Server
  2. SERVER-57308

Further investigate slow deletion of chunks

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    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Works as Designed
    • None
    • None
    • Sharding
    • Sharding EMEA 2021-06-14

    Description

      SERVER-57221 highlighted performance problems on deletes for collections with more than one secondary index and SERVER-57307 mitigates the problem with the use of a hint for chunk documents deletion.

      However, the ~17x performance gain showed in SERVER-57221 does not seem to correspond to the ~5x gain obtained when locally testing SERVER-57307 changes.

      Investigate what leads to such a difference. Some options to check would be: interference on the machine, documents size, presence of specific config server hooks/observers, number of secondaries, sharding-specific overhead (since the test was done on a plain RS).

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              pierlauro.sciarelli@mongodb.com Pierlauro Sciarelli
              pierlauro.sciarelli@mongodb.com Pierlauro Sciarelli
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