[
https://issues.apache.org/jira/browse/MAPREDUCE-3808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13202326#comment-13202326
]
Hudson commented on MAPREDUCE-3808:
-----------------------------------
Integrated in Hadoop-Hdfs-0.23-Build #162 (See
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/162/])
MAPREDUCE-3808. Fixed an NPE in FileOutputCommitter for jobs with maps but
no reduces. Contributed by Robert Joseph Evans.
svn merge --ignore-ancestry -c 1241217 ../../trunk/
vinodkv :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1241218
Files :
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/FileOutputCommitter.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/FileOutputCommitter.java
*
/hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestFileOutputCommitter.java
> 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, 0.24.0
> Reporter: Siddharth Seth
> Assignee: Robert Joseph Evans
> Priority: Blocker
> Fix For: 0.23.1
>
> Attachments: MR-3808.txt
>
>
> 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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