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Vinod K V commented on MAPREDUCE-1082: -------------------------------------- Thinking more about it, I am fine with just fixing the NPE and the problem with {{JobQueueInfo.readFields()}} to solve this issue. We can delay the cleanup for later via MAPREDUCE-1110. > 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 > > > 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>" -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.