[jira] [Created] (SPARK-3277) LZ4 compression cause the the ExternalSort exception

["hzw (JIRA)" <ji...@apache.org>]

hzw created SPARK-3277:
--------------------------

             Summary: LZ4 compression cause the the ExternalSort exception
                 Key: SPARK-3277
                 URL: https://issues.apache.org/jira/browse/SPARK-3277
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.0.2
            Reporter: hzw
             Fix For: 1.1.0


I tested the LZ4 compression,and it come up with such problem.(with wordcount)
Also I tested the snappy and LZF,and they were OK.
At last I set the  "spark.shuffle.spill" as false to avoid such exeception, but once open this "switch", this error would come.
Exeception Info as follow:
java.lang.AssertionError: assertion failed
        at scala.Predef$.assert(Predef.scala:165)
        at org.apache.spark.util.collection.ExternalAppendOnlyMap$DiskMapIterator.<init>(ExternalAppendOnlyMap.scala:416)
        at org.apache.spark.util.collection.ExternalAppendOnlyMap.spill(ExternalAppendOnlyMap.scala:235)
        at org.apache.spark.util.collection.ExternalAppendOnlyMap.insertAll(ExternalAppendOnlyMap.scala:150)
        at org.apache.spark.Aggregator.combineValuesByKey(Aggregator.scala:58)
        at org.apache.spark.shuffle.hash.HashShuffleWriter.write(HashShuffleWriter.scala:55)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
        at org.apache.spark.scheduler.Task.run(Task.scala:54)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:177)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:722)




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