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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1675) Null pointer exception in InMemoryFileSystem
Date Sat, 04 Aug 2007 08:12:52 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12517691
] 

Devaraj Das commented on HADOOP-1675:
-------------------------------------

I verified from the logs that what I said earlier is indeed the case.

> Null pointer exception in InMemoryFileSystem
> --------------------------------------------
>
>                 Key: HADOOP-1675
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1675
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.13.0
>            Reporter: Runping Qi
>
> In a job running release .13, I saw a lot of failures due to the following errors:
> 2007-08-03 16:13:39,516 ERROR org.apache.hadoop.mapred.ReduceTask: Map output copy failure:
java.lang.NullPointerException
> 	at org.apache.hadoop.fs.InMemoryFileSystem$RawInMemoryFileSystem.reserveSpace(InMemoryFileSystem.java:361)
> 	at org.apache.hadoop.fs.InMemoryFileSystem.reserveSpaceWithCheckSum(InMemoryFileSystem.java:474)
> 	at org.apache.hadoop.mapred.MapOutputLocation.getFile(MapOutputLocation.java:220)
> 	at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:680)
> 	at org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:641)

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