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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/02/02 21:40:55 UTC

[GitHub] [arrow-datafusion] alamb commented on pull request #1732: Prevent repartitioning of certain operator's direct children (#1731)

alamb commented on pull request #1732:
URL: https://github.com/apache/arrow-datafusion/pull/1732#issuecomment-1028383653


   > For context one of the reasons I'm interested in reducing the concurrency is somewhat stupid, the plans and the resulting metrics and tracing become HUGE, but I also can't help but feel that always pursuing the maximum concurrency is liable to hit a wall somewhere - probably memory 😁
   
   
   I think pursuing the maximum concurrency specified in `target_partitions` is a good strategy, but it needs to be complimented by a more sophisticated scheduler, that breaks the plans down into smaller pieces, perhaps as described / explained in  https://github.com/apache/arrow-datafusion/issues/64


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