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  1. Spark
  2. SPARK-21175

shuffle service should reject fetch requests if there are already many requests in progress

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.1.1
    • Fix Version/s: 2.3.0
    • Component/s: Shuffle
    • Labels:
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      Description

      A shuffle service can serves blocks from multiple apps/tasks. Thus the shuffle service can suffers high memory usage when lots of shuffle-read happen at the same time. In my cluster, OOM always happens on shuffle service. Analyzing heap dump, memory cost by Netty(chunks) can be up to 2~3G. It might make sense to reject "open blocks" request when memory usage is high on shuffle service.

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              • Assignee:
                jinxing6042@126.com jin xing
                Reporter:
                jinxing6042@126.com jin xing
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                • Created:
                  Updated:
                  Resolved: