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https://issues.apache.org/jira/browse/MAPREDUCE-4100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13257243#comment-13257243
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Hudson commented on MAPREDUCE-4100:
-----------------------------------
Integrated in Hadoop-Mapreduce-trunk-Commit #2121 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2121/])
MAPREDUCE-4100. [Gridmix] Bug fixed in compression emulation feature for
map only jobs. (amarrk) (Revision 1327816)
Result = ABORTED
amarrk : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1327816
Files :
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/src/contrib/gridmix/src/java/org/apache/hadoop/mapred/gridmix/CompressionEmulationUtil.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/src/contrib/gridmix/src/java/org/apache/hadoop/mapred/gridmix/LoadJob.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/src/contrib/gridmix/src/test/org/apache/hadoop/mapred/gridmix/TestCompressionEmulationUtils.java
> Sometimes gridmix emulates data larger much larger then acutal counter for
> map only jobs
> ----------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4100
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4100
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/gridmix
> Affects Versions: 1.1.0
> Reporter: Karam Singh
> Assignee: Amar Kamat
> Priority: Minor
> Fix For: 0.24.0
>
> Attachments: mapreduce-4100-v1.2.patch
>
>
> While running 1400+ jobs trace I encountered this issue.
> For map-only jobs, observed that some Maps generating data of around 9 GB
> (From HDFS_BYTES_WRITTEN) whereas actual value is around 5GB in trace.
> This can sometimes also cause jobs to fail intermittently.
> Other GridMix version coming be Hadoop-1.1.X and above might also effected
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