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  1. Kylin
  2. KYLIN-3472

TopN merge in Spark engine performance tunning

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: v2.5.0
    • Component/s: Spark Engine
    • Labels:
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      Description

      Spark executor thread dump shows most CPU are spent on TopNCounter#merge .

        Attachments

        1. image-2018-07-27-18-16-12-192.png
          138 kB
          Shao Feng Shi
        2. image-2018-07-27-18-16-12-112.png
          153 kB
          Shao Feng Shi

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              • Assignee:
                shaofengshi Shao Feng Shi
                Reporter:
                shaofengshi Shao Feng Shi
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                Dates

                • Created:
                  Updated:
                  Resolved: