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  1. Spark
  2. SPARK-25075 Build and test Spark against Scala 2.13
  3. SPARK-32436

Initialize numNonEmptyBlocks in HighlyCompressedMapStatus.readExternal

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.1.0
    • Fix Version/s: 3.0.2, 3.1.0
    • Component/s: Spark Core
    • Labels:
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      Description

      In Scala 2.13, this causes several UT failures because `HighlyCompressedMapStatus.readExternal` doesn't initialize this field. The following two are the examples.

      • org.apache.spark.rdd.RDDSuite
          Cause: java.lang.NoSuchFieldError: numNonEmptyBlocks
          at org.apache.spark.scheduler.HighlyCompressedMapStatus.<init>(MapStatus.scala:181)
          at org.apache.spark.scheduler.HighlyCompressedMapStatus$.apply(MapStatus.scala:280)
          at org.apache.spark.scheduler.MapStatus$.apply(MapStatus.scala:73)
          at org.apache.spark.shuffle.sort.UnsafeShuffleWriter.closeAndWriteOutput(UnsafeShuffleWriter.java:231)
          at org.apache.spark.shuffle.sort.UnsafeShuffleWriter.write(UnsafeShuffleWriter.java:179)
          at org.apache.spark.shuffle.ShuffleWriteProcessor.write(ShuffleWriteProcessor.scala:59)
          at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:99)
          at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:52)
          at org.apache.spark.scheduler.Task.run(Task.scala:127)
          at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:464)
        
      • org.apache.spark.scheduler.MapStatusSuite
        *** RUN ABORTED ***
          java.lang.NoSuchFieldError: numNonEmptyBlocks
          at org.apache.spark.scheduler.HighlyCompressedMapStatus.<init>(MapStatus.scala:181)
          at org.apache.spark.scheduler.HighlyCompressedMapStatus$.apply(MapStatus.scala:280)
        

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            • Assignee:
              dongjoon Dongjoon Hyun
              Reporter:
              dongjoon Dongjoon Hyun
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              • Created:
                Updated:
                Resolved: