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Date: Wed, 4 Jun 2008 20:37:45 -0700 (PDT)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-2565) DFSPath cache of FileStatus can
 become stale
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    [ https://issues.apache.org/jira/browse/HADOOP-2565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602526#action_12602526 ] 

Hadoop QA commented on HADOOP-2565:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12383419/2565_20080604b.patch
  against trunk revision 663370.

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +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 failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2581/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2581/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2581/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2581/console

This message is automatically generated.

> DFSPath cache of FileStatus can become stale
> --------------------------------------------
>
>                 Key: HADOOP-2565
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2565
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.16.0
>            Reporter: Doug Cutting
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 2565_20080424.patch, 2565_20080604.patch, 2565_20080604b.patch
>
>
> Paths returned from DFS internally cache their FileStatus, so that getStatus(Path) does not require another RPC.  This cache is never refreshed and become stale, resulting in program error.
> This should not be fixed until FileSystem#listStatus() is removed by HADOOP-2563, and user code is thus no longer dependent on this cache for good performance.

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