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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4296) Spasm of JobClient failures on successful jobs every once in a while
Date Fri, 17 Oct 2008 08:02:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640462#action_12640462
] 

Hadoop QA commented on HADOOP-4296:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12392272/4296_jt_delayretire3.patch
  against trunk revision 705430.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3481/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3481/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3481/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3481/console

This message is automatically generated.

> Spasm of JobClient failures on successful jobs every once in a while
> --------------------------------------------------------------------
>
>                 Key: HADOOP-4296
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4296
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.17.1
>            Reporter: Joydeep Sen Sarma
>            Assignee: dhruba borthakur
>            Priority: Blocker
>             Fix For: 0.19.0
>
>         Attachments: 4296_jt_delayretire.patch, 4296_jt_delayretire2.patch, 4296_jt_delayretire3.patch
>
>
> At very busy times - we get a wave of job client failures all at the same time. the failures
come when the job is about to complete. when we look at the job history files - the jobs are
actually complete. Here's the stack:
> 08/09/27 02:18:00 INFO mapred.JobClient:  map 100% reduce 98%
> 08/09/27 02:18:41 INFO mapred.JobClient:  map 100% reduce 99% 
> java.lang.NullPointerException
> 	at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:993)
> 	at com.facebook.hive.common.columnSetLoader.main(columnSetLoader.java:535)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:155)

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