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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-2307) Exception thrown in Jobtracker logs, when the Scheduler configured is FairScheduler.
Date Tue, 08 Mar 2011 19:44:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004158#comment-13004158
] 

Hadoop QA commented on MAPREDUCE-2307:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12472960/MAPREDUCE-2307.patch
  against trunk revision 1079072.

    +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 new tests are needed for this patch.
                        Also please list what manual steps were performed to verify 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 (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

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

    -1 contrib tests.  The patch failed contrib unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/132//testReport/
Findbugs warnings: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/132//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/132//console

This message is automatically generated.

> Exception thrown in Jobtracker logs, when the Scheduler configured is FairScheduler.
> ------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2307
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2307
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/fair-share
>    Affects Versions: 0.23.0
>            Reporter: Devaraj K
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2307.patch
>
>
> If we try to start the job tracker with fair scheduler using the default configuration,
It is giving the below exception.
> {code:xml} 
> 2010-07-03 10:18:27,142 INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 4 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 5 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 6 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 7 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 8 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.mapred.JobTracker: Starting RUNNING
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 9 on 9001:
starting
> 2010-07-03 10:18:28,037 INFO org.apache.hadoop.net.NetworkTopology: Adding a new node:
/default-rack/linux172.site
> 2010-07-03 10:18:28,090 INFO org.apache.hadoop.net.NetworkTopology: Adding a new node:
/default-rack/linux177.site
> 2010-07-03 10:18:40,074 ERROR org.apache.hadoop.mapred.PoolManager: Failed to reload
allocations file - will use existing allocations.
> java.lang.NullPointerException
> at java.io.File.<init>(File.java:222)
> at org.apache.hadoop.mapred.PoolManager.reloadAllocsIfNecessary(PoolManager.java:127)
> at org.apache.hadoop.mapred.FairScheduler.assignTasks(FairScheduler.java:234)
> at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2785)
> 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.ipc.RPC$Server.call(RPC.java:513)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:984)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:980)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:978)
> {code} 

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