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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-504) HDFS updates the modification time of a file when the file is closed.
Date Sat, 01 Aug 2009 00:16:15 GMT

    [ https://issues.apache.org/jira/browse/HDFS-504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737784#action_12737784
] 

Hadoop QA commented on HDFS-504:
--------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12414676/pathfile.txt
  against trunk revision 799695.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-vesta.apache.org/37/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-vesta.apache.org/37/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-vesta.apache.org/37/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-vesta.apache.org/37/console

This message is automatically generated.

> HDFS updates the modification time of a file when the file is closed.
> ---------------------------------------------------------------------
>
>                 Key: HDFS-504
>                 URL: https://issues.apache.org/jira/browse/HDFS-504
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.20.1
>            Reporter: Chun Zhang
>            Assignee: Chun Zhang
>            Priority: Minor
>             Fix For: 0.20.1
>
>         Attachments: pathfile.txt, pathfile.txt, pathfile.txt, pathfile.txt
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> Current HDFS updates the modification time of a file when the file is created. We would
like to update the modification time of the file when the file is closed after being written
to. This helps HDFS Raid to detect file changes more aggressively.
> Solution includes:
> 1. Made changes to closeFile@/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java;
> 2. Added unit test to testTimesAtClose@/org/apache/hadoop/hdfs/TestSetTimes.java.

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