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Date: Thu, 12 Nov 2009 09:22:40 +0000 (UTC)
From: "Vinod K V (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Commented: (MAPREDUCE-1082) Command line UI for queues'
 information is broken with hierarchical queues.
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-1082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12776923#action_12776923 ] 

Vinod K V commented on MAPREDUCE-1082:
--------------------------------------

Or should I say MAPREDUCE-861 broke the back-compatibility of the serialization.

> Command line UI for queues' information is broken with hierarchical queues.
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1082
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1082
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: client, jobtracker
>    Affects Versions: 0.21.0
>            Reporter: Vinod K V
>            Assignee: V.V.Chaitanya Krishna
>            Priority: Blocker
>             Fix For: 0.21.0
>
>         Attachments: MAPREDUCE-1082-1.txt, MAPREDUCE-1082-2.patch
>
>
> When the command "./bin/mapred --config ~/tmp/conf/ queue -list" is run, it just hangs. I can see the following in the JT logs:
> {code}
> 2009-10-08 13:19:26,762 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1 on 55555 caught: java.lang.NullPointerException
>         at org.apache.hadoop.mapreduce.QueueInfo.write(QueueInfo.java:217)
>         at org.apache.hadoop.mapreduce.QueueInfo.write(QueueInfo.java:223)
>         at org.apache.hadoop.io.ObjectWritable.writeObject(ObjectWritable.java:159)
>         at org.apache.hadoop.io.ObjectWritable.writeObject(ObjectWritable.java:126)
>         at org.apache.hadoop.io.ObjectWritable.write(ObjectWritable.java:70)
>         at org.apache.hadoop.ipc.Server.setupResponse(Server.java:1074)
>         at org.apache.hadoop.ipc.Server.access$2400(Server.java:77)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:983)
> {code}
> Same is the case with "./bin/mapred --config ~/tmp/conf/ queue -info <any-container-queue>"

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