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From "Ramya Sunil (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3821) NPE while running Shuffle benchmark
Date Mon, 06 Feb 2012 20:50:59 GMT
NPE while running Shuffle benchmark
-----------------------------------

                 Key: MAPREDUCE-3821
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3821
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.1
            Reporter: Ramya Sunil
            Priority: Critical


hadoop jar hadoop-mapreduce-test.jar loadgen -outKey org.apache.hadoop.io.Text -outValue org.apache.hadoop.io.Text
The tasks fail with the following exception:
{noformat}
Error: java.lang.NullPointerException
	at org.apache.hadoop.fs.Path.<init>(Path.java:69)
	at org.apache.hadoop.fs.Path.<init>(Path.java:58)
	at org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.getPendingJobAttemptsPath(FileOutputCommitter.java:118)
	at org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.getJobAttemptPath(FileOutputCommitter.java:167)
	at org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.getJobAttemptPath(FileOutputCommitter.java:149)
	at org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.getPendingTaskAttemptsPath(FileOutputCommitter.java:185)
	at org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.getTaskAttemptPath(FileOutputCommitter.java:209)
	at org.apache.hadoop.mapred.FileOutputCommitter.getTaskAttemptPath(FileOutputCommitter.java:100)
	at org.apache.hadoop.mapred.FileOutputCommitter.getTaskAttemptPath(FileOutputCommitter.java:94)
	at org.apache.hadoop.mapred.FileOutputCommitter.needsTaskCommit(FileOutputCommitter.java:176)
	at org.apache.hadoop.mapred.OutputCommitter.needsTaskCommit(OutputCommitter.java:248)
	at org.apache.hadoop.mapred.Task.isCommitRequired(Task.java:955)
	at org.apache.hadoop.mapred.Task.done(Task.java:912)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:331)
	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:147)
	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.YarnChild.main(YarnChild.java:142)
{noformat}

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