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From "Ramkumar Vadali (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-2146) Raid should not affect access time of a source file
Date Mon, 25 Oct 2010 07:01:23 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12924470#action_12924470
] 

Ramkumar Vadali commented on MAPREDUCE-2146:
--------------------------------------------

Test Results:

ant test under src/contrib/raid:
{code}
test-junit:
    [junit] WARNING: multiple versions of ant detected in path for junit 
    [junit]          jar:file:/home/rvadali/local/external/ant/lib/ant.jar!/org/apache/tools/ant/Project.class
    [junit]      and jar:file:/home/rvadali/.ivy2/cache/ant/ant/jars/ant-1.6.5.jar!/org/apache/tools/ant/Project.class
    [junit] Running org.apache.hadoop.hdfs.TestRaidDfs
    [junit] Tests run: 2, Failures: 0, Errors: 0, Time elapsed: 29.883 sec
    [junit] Running org.apache.hadoop.raid.TestDirectoryTraversal
    [junit] Tests run: 2, Failures: 0, Errors: 0, Time elapsed: 8.962 sec
    [junit] Running org.apache.hadoop.raid.TestHarIndexParser
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.052 sec
    [junit] Running org.apache.hadoop.raid.TestRaidHar
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 70.91 sec
    [junit] Running org.apache.hadoop.raid.TestRaidNode
    [junit] Tests run: 3, Failures: 0, Errors: 0, Time elapsed: 404.021 sec
    [junit] Running org.apache.hadoop.raid.TestRaidPurge
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 44.224 sec
    [junit] Running org.apache.hadoop.raid.TestRaidShell
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 21.06 sec

test:

BUILD SUCCESSFUL
Total time: 9 minutes 58 seconds
{code}

ant test-patch:

{code}


     [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] ======================================================================
     [exec]
     [exec]

{code}
Since this is a one-line fix, I did not add a unit-test

> Raid should not affect access time of a source file
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-2146
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2146
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Ramkumar Vadali
>            Assignee: Ramkumar Vadali
>            Priority: Minor
>         Attachments: MAPREDUCE-2146.patch
>
>
> After a file is read for creating a raid parity file, the access time should be set back
to the value before the read. The read by RAID code is not an application read and should
not affect the access time.

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