[jira] [Created] (SPARK-12690) NullPointerException in UnsafeInMemorySorter.free()

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

Carson Wang created SPARK-12690:
-----------------------------------

             Summary: NullPointerException in UnsafeInMemorySorter.free()
                 Key: SPARK-12690
                 URL: https://issues.apache.org/jira/browse/SPARK-12690
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.6.0
            Reporter: Carson Wang
            Priority: Minor


{code}
ERROR spark.TaskContextImpl: Error in TaskCompletionListener
java.lang.NullPointerException
        at org.apache.spark.util.collection.unsafe.sort.UnsafeInMemorySorter.free(UnsafeInMemorySorter.java:110)
        at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter.cleanupResources(UnsafeExternalSorter.java:288)
        at org.apache.spark.util.collection.unsafe.sort.UnsafeExternalSorter$1.onTaskCompletion(UnsafeExternalSorter.java:141)
        at org.apache.spark.TaskContextImpl$$anonfun$markTaskCompleted$1.apply(TaskContextImpl.scala:79)
        at org.apache.spark.TaskContextImpl$$anonfun$markTaskCompleted$1.apply(TaskContextImpl.scala:77)
        at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
        at org.apache.spark.TaskContextImpl.markTaskCompleted(TaskContextImpl.scala:77)
        at org.apache.spark.scheduler.Task.run(Task.scala:91)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:722)
{code}



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