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https://issues.apache.org/jira/browse/MAPREDUCE-3630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192888#comment-13192888
]
Hudson commented on MAPREDUCE-3630:
-----------------------------------
Integrated in Hadoop-Common-trunk-Commit #1582 (See
[https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1582/])
MAPREDUCE-3630. Fixes a NullPointer exception while running TeraGen - if a
map is asked to generate 0 records. (Contributed by Mahadev Konar)
sseth : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1235641
Files :
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraGen.java
> NullPointerException running teragen
> ------------------------------------
>
> Key: MAPREDUCE-3630
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3630
> Project: Hadoop Map/Reduce
> Issue Type: Task
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Amol Kekre
> Assignee: Mahadev konar
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3630.patch
>
>
> CMD = /grid/0/gs/gridre/yroot.omegab/share/hadoopcommon/bin/hadoop --config
> /grid/0/gs/gridre/yroot.omegab/conf/hadoop/
> jar
> /grid/0/gs/gridre/yroot.omegab/share/hadoopmapred/hadoop-mapreduce-examples-*.jar
> teragen
> -Dmapred.job.queue.name=audience -Dmapreduce.job.acl-view-job=*
> -Dyarn.app.mapreduce.am.staging-dir=/user
> -Dmapreduce.jobtracker.staging.root.dir=/user 1 teraInputDir
> Error:
> 11/09/21 21:59:59 INFO mapreduce.Job: map 50% reduce 0%
> 11/09/21 22:00:00 INFO mapreduce.Job: Task Id :
> attempt_1316132655177_0533_m_000001_0, Status : FAILED
> java.lang.NullPointerException
> at
> org.apache.hadoop.examples.terasort.TeraGen$SortGenMapper.cleanup(TeraGen.java:241)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:708)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:148)
> 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:1135)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:143)
> 11/09/21 22:00:00 WARN mapreduce.Job: Error reading task output Server
> returned HTTP response code: 400 for URL:
> http://.../tasklog?plaintext=true&attemptid=attempt_1316132655177_0533_m_000001_0&filter=stdout
> 11/09/21 22:00:00 WARN mapreduce.Job: Error reading task output Server
> returned HTTP response code: 400 for URL:
> http://.../tasklog?plaintext=true&attemptid=attempt_1316132655177_0533_m_000001_0&filter=stderr
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