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https://issues.apache.org/jira/browse/MAPREDUCE-1082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783579#action_12783579
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Hemanth Yamijala commented on MAPREDUCE-1082:
---------------------------------------------
Have a few comments on this patch:
- I don't know why readFields in JobQueueInfo needs to be overridden. In all
the API, it is QueueInfo objects that are transferred over IPC, and I think it
should remain that way.
- I think the test case needs to be an end-to-end test by definition, as the
fix is both in JobQueueInfo as well as in the JobTracker, where when we
translate JobQueueInfos to QueueInfos, we fix the translation by walking the
entire hierarchy. I would suggest a test that brings up a MiniMRCluster with
hierarchical queues, submits a job to one of the queues and calls
Cluster.getRootQueues and verifies the returned QueueInfo information. We might
need a package private JobTracker.setQueueManager to enable setting up
hierarchical queues with a miniMRCluster.
> 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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