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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1961) -get, -copyToLocal fail when single filename is passed
Date Thu, 04 Oct 2007 04:11:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12532320
] 

Hadoop QA commented on HADOOP-1961:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
http://issues.apache.org/jira/secure/attachment/12367039/HADOOP-1961.patch
against trunk revision r581745.

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

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

    javac +1.  The applied patch does not generate any new compiler warnings.

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

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

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

Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/881/testReport/
Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/881/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/881/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/881/console

This message is automatically generated.

> -get, -copyToLocal fail when  single filename is passed
> -------------------------------------------------------
>
>                 Key: HADOOP-1961
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1961
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.14.1
>            Reporter: Koji Noguchi
>            Assignee: Raghu Angadi
>            Priority: Blocker
>             Fix For: 0.14.2
>
>         Attachments: HADOOP-1961-branch14.patch, HADOOP-1961.patch, HADOOP-1961.patch,
HADOOP-1961.patch
>
>
> In 0.14.1 and in trunk, when I try 
> % hadoop dfs -get /user/knoguchi/aaa  aaa
> get: Failed to rename tmp file to local destination "aaa".  Remote source file "/user/knoguchi/aaa"
is saved to "/tmp/_copyToLocal_aaa30478".
> This works. 
> % hadoop dfs -get /user/knoguchi/aaa  ./aaa
> or 
> % hadoop dfs -get /user/knoguchi/aaa   /home/knoguchi/aaa
> My guess. With change in HADOOP-1292, it now creates a tmp file when -copyToLocal.
> When destination path is passed without any directory, tmp file is created under '/tmp'.
Otherwise, it uses the same directory as the destination path.
> In Java API for File.renameTo, 
> http://java.sun.com/javase/6/docs/api/java/io/File.html#renameTo(java.io.File)
> it says 
> " The rename operation might not be able to move a file from one filesystem to another",

> so renameTo call from /tmp/_tmpfile to /home/knoguchi can fail.

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