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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1587) NPE in JobClient querying an (empty) queue
Date Wed, 10 Mar 2010 13:59:27 GMT
NPE in JobClient querying an (empty) queue
------------------------------------------

                 Key: MAPREDUCE-1587
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1587
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: client
    Affects Versions: 0.22.0
         Environment: Suse Linux Java 6u15
            Reporter: Steve Loughran
            Priority: Minor


Getting a stack trace on a VM-hosted cluster with an empty queue. Thought maybe it was the
-verbose option, but no, remove that and I still see it.
{code}
java org.apache.hadoop.mapred.JobQueueClient -list -showjobs -verbose
  [sshexec] 10/03/10 13:56:21 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping;
cacheTimeout=300000
  [sshexec] 10/03/10 13:56:21 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker,
sessionId=
  [sshexec] Exception in thread "main" 
  [sshexec] java.lang.NullPointerException
  [sshexec] 	at org.apache.hadoop.mapred.JobClient.getJobQueueInfoArray(JobClient.java:921)
  [sshexec] 	at org.apache.hadoop.mapred.JobClient.getRootQueues(JobClient.java:937)
  [sshexec] 	at org.apache.hadoop.mapred.JobQueueClient.displayQueueList(JobQueueClient.java:142)
  [sshexec] 	at org.apache.hadoop.mapred.JobQueueClient.run(JobQueueClient.java:96)
  [sshexec] 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
  [sshexec] 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
  [sshexec] 	at org.apache.hadoop.mapred.JobQueueClient.main(JobQueueClient.java:232)


{code}

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