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https://issues.apache.org/jira/browse/MAPREDUCE-862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756663#action_12756663
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Aaron Kimball commented on MAPREDUCE-862:
-----------------------------------------
-1. My jobtracker now fails to start with a NullPointerException:
{code}
2009-09-17 10:45:46,121 INFO org.apache.hadoop.util.HostsFileReader: Refreshing
hosts (include/exclude) list
2009-09-17 10:45:46,124 FATAL org.apache.hadoop.mapred.JobTracker:
java.lang.NullPointerException
»- at
org.apache.hadoop.mapred.QueueManager.getQueueConfigurationParser(QueueManager.java:117)
»- at org.apache.hadoop.mapred.QueueManager.<init>(QueueManager.java:137)
»- at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:1315)
»- at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:212)
»- at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:204)
»- at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:199)
»- at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:3584)
2009-09-17 10:45:46,125 INFO org.apache.hadoop.mapred.JobTracker: SHUTDOWN_MSG:
{code}
This happens if {{conf/mapred-queues.xml}} does not exist.
> Modify UI to support a hierarchy of queues
> ------------------------------------------
>
> Key: MAPREDUCE-862
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-862
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Reporter: Hemanth Yamijala
> Assignee: V.V.Chaitanya Krishna
> Fix For: 0.21.0
>
> Attachments: clustersummarymodification.png, detailspage.png,
> initialscreen.png, MAPREDUCE-862-1.patch, MAPREDUCE-862-2.patch,
> MAPREDUCE-862-3.patch, MAPREDUCE-862-4.patch, MAPREDUCE-862-5.patch,
> MAPREDUCE-862-6.patch, MAPREDUCE-862-7.patch, subqueue.png
>
>
> MAPREDUCE-853 proposes to introduce a hierarchy of queues into the Map/Reduce
> framework. This JIRA is for defining changes to the UI related to queues.
> This includes the hadoop queue CLI and the web UI on the JobTracker.
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