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From "Siddharth Seth (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3808) NPE in FileOutputCommitter when running a 0 reduce job
Date Sat, 04 Feb 2012 19:51:53 GMT
NPE in FileOutputCommitter when running a 0 reduce job
------------------------------------------------------

                 Key: MAPREDUCE-3808
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3808
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.0
            Reporter: Siddharth Seth
            Priority: Blocker


This was while running LoadGen.

{noformat}
Error: java.lang.NullPointerException at org.apache.hadoop.fs.Path.<init>(Path.java:67)

at org.apache.hadoop.fs.Path.<init>(Path.java:56) 
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:1157) 
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:142)
{noformat}

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