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)
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