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https://issues.apache.org/jira/browse/MAPREDUCE-1816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916263#action_12916263
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Ramkumar Vadali commented on MAPREDUCE-1816:
--------------------------------------------

Test results:

ant test:

All succeeded except TestUlimit, which is an unrelated failure.

ant test-patch:

     [exec] 
     [exec] -1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     -1 tests included.  The patch doesn't appear to include any new 
or modified tests.
     [exec]                         Please justify why no new tests are needed 
for this patch.
     [exec]                         Also please list what manual steps were 
performed to verify this patch.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning 
messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number 
of javac compiler warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs 
warnings.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the 
total number of release audit warnings.
     [exec] 
     [exec]     +1 system tests framework.  The patch passed system tests 
framework compile.
     [exec] 
     [exec] 
     [exec] 
     [exec] 
     [exec] 
======================================================================
     [exec] 
======================================================================
     [exec]     Finished build.
     [exec] 
======================================================================
     [exec] 
======================================================================

I think it is OK to not have a unit-test for this patch since this only changes 
configuration parameters. I have tested this manually and verified that it works

> HAR files used for RAID parity need to have configurable partfile size
> ----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1816
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1816
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/raid
>    Affects Versions: 0.20.1
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1816.patch, MAPREDUCE-1816.patch.1
>
>
> RAID parity files are merged into HAR archives periodically. This is required 
> to reduce the number of files that the NameNode has to track. The number of 
> files present in a HAR archive depends on the size of HAR part files - higher 
> the size, lower the number of files.
> The size of HAR part files is configurable through the setting 
> har.partfile.size, but that is a global setting. This task introduces a new 
> setting specific to raid.har.partfile.size, that is used in-turn to set 
> har.partfile.size

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