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Date: Tue, 22 May 2012 20:43:42 +0000 (UTC)
From: "Rahul Jain (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: <1298950191.9450.1337719422373.JavaMail.jiratomcat@issues-vm>
Subject: [jira] [Created] (MAPREDUCE-4279) getClusterStatus() fails with
 null pointer exception when running jobs in local mode
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Rahul Jain created MAPREDUCE-4279:
-------------------------------------

             Summary: getClusterStatus() fails with null pointer exception when running jobs in local mode
                 Key: MAPREDUCE-4279
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4279
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: jobtracker
    Affects Versions: 0.23.1
            Reporter: Rahul Jain


While migrating code from 0.20.2 hadoop codebase to 0.23.1 we encountered this issue for jobs run in local mode of execution:
{code}

java.lang.NullPointerException
	at org.apache.hadoop.mapred.JobClient.arrayToStringList(JobClient.java:783)
	at org.apache.hadoop.mapred.JobClient.access$600(JobClient.java:138)
	at org.apache.hadoop.mapred.JobClient$4.run(JobClient.java:815)
	at org.apache.hadoop.mapred.JobClient$4.run(JobClient.java:812)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
	at org.apache.hadoop.mapred.JobClient.getClusterStatus(JobClient.java:812)
{code}

We are using cloudera distribution CDH4b2 for testing, however the underlying code is 0.23.1 and I could see no difference in this implementation.

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