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

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

Rajesh Balamohan created TEZ-2405:
-------------------------------------

             Summary: 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
            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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