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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1845) symlink comes up as directory after namenode restart
Date Tue, 19 Apr 2011 16:24:06 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13021645#comment-13021645

Hadoop QA commented on HDFS-1845:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 1094748.

    +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 (version 1.3.9) warnings.

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

    -1 core tests.  The patch failed these core unit tests:

    -1 contrib tests.  The patch failed contrib unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/391//testReport/
Findbugs warnings: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/391//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/391//console

This message is automatically generated.

> symlink comes up as directory after namenode restart
> ----------------------------------------------------
>                 Key: HDFS-1845
>                 URL: https://issues.apache.org/jira/browse/HDFS-1845
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.22.0
>            Reporter: John George
>            Assignee: John George
>             Fix For: 0.22.0
>         Attachments: HDFS-1845-apache.patch
> When a symlink is first created, it get added to EditLogs. When namenode is restarted,
it reads from this editlog and represents a symlink correctly and saves this information to
its image. If the namenode is restarted again, it reads its from this FSImage, but thinks
that a symlink is a directory. This is because it uses "Block[] blocks" to determine if an
INode is a directory, a file, or symlink. Since both a directory and a symlink has blocks
as null, it thinks that a symlink is a directory.

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