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From "Haibo Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6805) Negative Array Exception while reducer fetch mapper output
Date Fri, 28 Oct 2016 13:26:58 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15615398#comment-15615398
] 

Haibo Chen commented on MAPREDUCE-6805:
---------------------------------------

I believe this is a duplication of MAPREDUCE-6724, which is not in 2.6.

> Negative Array Exception while reducer fetch mapper output
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-6805
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6805
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 2.6.0
>         Environment: CHD5.7.0
>            Reporter: shenxianqiang
>            Priority: Minor
>         Attachments: MAPREDUCE-6805.patch
>
>
> MapReduce job stuck with a Negative Array Size exception thrown by the reducer,lead to
MR job failed
> stack trace:
> {quote}
> 2016-10-28 08:01:16,882 WARN [main] org.apache.hadoop.security.UserGroupInformation:
PriviledgedActionException as:web_vr (auth:SIMPLE) cause:org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError:
error in shuffle in fetcher#3
> 2016-10-28 08:01:16,883 WARN [main] org.apache.hadoop.mapred.YarnChild: Exception running
child : org.apache.hadoop.mapreduce.task.reduce.Shuffle$ShuffleError: error in shuffle in
fetcher#3
> 	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:164)
> 	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:1930)
> 	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
> Caused by: java.lang.NegativeArraySizeException
> 	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:305)
> 	at org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl.reserve(MergeManagerImpl.java:295)
> 	at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyMapOutput(Fetcher.java:514)
> 	at org.apache.hadoop.mapreduce.task.reduce.Fetcher.copyFromHost(Fetcher.java:336)
> 	at org.apache.hadoop.mapreduce.task.reduce.Fetcher.run(Fetcher.java:193)
> {quote}



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