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  1. Spark
  2. SPARK-23524

Big local shuffle blocks should not be checked for corruption.

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.2.1
    • Fix Version/s: 2.3.1, 2.4.0
    • Component/s: Spark Core
    • Labels:
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      Description

      In current code, all local blocks will be checked for corruption no matter it's big or not.  The reasons are as below:

      1. Size in FetchResult for local block is set to be 0 (https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala#L327)
      2. SPARK-4105 meant to only check the small blocks(size<maxBytesInFlight/3), but for reason 1, below check will be invalid. https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala#L420

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            • Assignee:
              jinxing6042@126.com Jin Xing
              Reporter:
              jinxing6042@126.com Jin Xing
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              • Created:
                Updated:
                Resolved: