[jira] [Assigned] (TEZ-2405) PipelinedSorter can throw NPE with custom compartor

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

     [ https://issues.apache.org/jira/browse/TEZ-2405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rajesh Balamohan reassigned TEZ-2405:
-------------------------------------

    Assignee: Rajesh Balamohan

> PipelinedSorter can throw NPE with custom compartor
> ---------------------------------------------------
>
>                 Key: TEZ-2405
>                 URL: https://issues.apache.org/jira/browse/TEZ-2405
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>            Priority: Critical
>
> If custom comparators are used,  PipelinedSorter can throw NPE depending on custom comparator implementations.
> {noformat}
> ], TaskAttempt 1 failed, info=[Error: Failure while running task:java.lang.NullPointerException
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter$SpanIterator.compareTo(PipelinedSorter.java:837)
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter$SpanIterator.compareTo(PipelinedSorter.java:767)
> 	at java.util.PriorityQueue.siftUpComparable(PriorityQueue.java:637)
> 	at java.util.PriorityQueue.siftUp(PriorityQueue.java:629)
> 	at java.util.PriorityQueue.offer(PriorityQueue.java:329)
> 	at java.util.PriorityQueue.add(PriorityQueue.java:306)
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter$SpanMerger.add(PipelinedSorter.java:996)
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter$SpanMerger.next(PipelinedSorter.java:1065)
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter$PartitionFilter.next(PipelinedSorter.java:936)
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.spill(PipelinedSorter.java:366)
> 	at org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.flush(PipelinedSorter.java:406)
> 	at org.apache.tez.runtime.library.output.OrderedPartitionedKVOutput.close(OrderedPartitionedKVOutput.java:183)
> 	at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.close(LogicalIOProcessorRuntimeTask.java:355)
> 	at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:181)
> 	at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAs(Subject.java:415)
> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> 	at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:171)
> 	at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:167)
> 	at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 	at java.lang.Thread.run(Thread.java:745)
> {noformat}



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