shuzhangyao created MAPREDUCE-6447:
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Summary: reduce shuffle throws "java.lang.OutOfMemoryError: Java
heap space"
Key: MAPREDUCE-6447
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6447
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: shuzhangyao
Assignee: shuzhangyao
Priority: Minor
2015-08-11 14:03:54,550 WARN [main] org.apache.hadoop.mapred.YarnChild:
Exception running child :
org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in shuffle
in fetcher#10
at org.apache.hadoop.mapreduce.task.reduce.Shuffle.run(Shuffle.java:134)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:376)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
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:1614)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
Caused by: java.lang.OutOfMemoryError: Java heap space
at
org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:56)
at
org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:46)
at
org.apache.hadoop.mapreduce.task.reduce.InMemoryMapOutput.<init>(InMemoryMapOutput.java:63)
at
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl.unconditionalReserve(MergeManagerImpl.java:303)
at
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl.reserve(MergeManagerImpl.java:293)
at
org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyMapOutput(Fetcher.java:511)
at
org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:329)
at org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:193)
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