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https://issues.apache.org/jira/browse/SPARK-22517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16319897#comment-16319897
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Andreas Maier commented on SPARK-22517:
---------------------------------------
[~willshen] I couldn't solve the issue. I circumvented it by splitting my Spark
job into several smaller jobs. I did this to avoid spilling from memory to disk
so the exception is not triggered. But in the meantime Spark 2.2.1 has been
released with a fix for SPARK-21907. Maybe this fixes also this bug here. So if
you can, try the newest version of Spark.
> NullPointerException in ShuffleExternalSorter.spill()
> -----------------------------------------------------
>
> Key: SPARK-22517
> URL: https://issues.apache.org/jira/browse/SPARK-22517
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: Andreas Maier
>
> I see a NullPointerException during sorting with the following stacktrace:
> {code}
> 17/11/13 15:02:56 ERROR Executor: Exception in task 138.0 in stage 9.0 (TID
> 13497)
> java.lang.NullPointerException
> at
> org.apache.spark.memory.TaskMemoryManager.getPage(TaskMemoryManager.java:383)
> at
> org.apache.spark.shuffle.sort.ShuffleExternalSorter.writeSortedFile(ShuffleExternalSorter.java:193)
> at
> org.apache.spark.shuffle.sort.ShuffleExternalSorter.spill(ShuffleExternalSorter.java:254)
> at
> org.apache.spark.memory.TaskMemoryManager.acquireExecutionMemory(TaskMemoryManager.java:203)
> at
> org.apache.spark.memory.TaskMemoryManager.allocatePage(TaskMemoryManager.java:281)
> at
> org.apache.spark.memory.MemoryConsumer.allocateArray(MemoryConsumer.java:90)
> at
> org.apache.spark.shuffle.sort.ShuffleInMemorySorter.reset(ShuffleInMemorySorter.java:100)
> at
> org.apache.spark.shuffle.sort.ShuffleExternalSorter.spill(ShuffleExternalSorter.java:256)
> at
> org.apache.spark.memory.TaskMemoryManager.acquireExecutionMemory(TaskMemoryManager.java:203)
> at
> org.apache.spark.memory.TaskMemoryManager.allocatePage(TaskMemoryManager.java:281)
> at
> org.apache.spark.memory.MemoryConsumer.allocateArray(MemoryConsumer.java:90)
> at
> org.apache.spark.shuffle.sort.ShuffleExternalSorter.growPointerArrayIfNecessary(ShuffleExternalSorter.java:328)
> at
> org.apache.spark.shuffle.sort.ShuffleExternalSorter.insertRecord(ShuffleExternalSorter.java:379)
> at
> org.apache.spark.shuffle.sort.UnsafeShuffleWriter.insertRecordIntoSorter(UnsafeShuffleWriter.java:246)
> at
> org.apache.spark.shuffle.sort.UnsafeShuffleWriter.write(UnsafeShuffleWriter.java:167)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:96)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:53)
> at org.apache.spark.scheduler.Task.run(Task.scala:108)
> at
> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:335)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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