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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5085) Copying a file to local with Crc throws an exception
Date Mon, 02 Feb 2009 22:59:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12669784#action_12669784

Hadoop QA commented on HADOOP-5085:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 740064.

    +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 Eclipse classpath. The patch retains Eclipse classpath integrity.

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

    +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/3789/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3789/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3789/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/3789/console

This message is automatically generated.

> Copying a file to local with Crc throws an exception
> ----------------------------------------------------
>                 Key: HADOOP-5085
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5085
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.20.0
>         Attachments: crcChecksum.patch, crcChecksum1.patch
> $ hadoop dfs -get -crc /user/aa/test.txt test.txt
> get: org.apache.hadoop.dfs.DistributedFileSystem cannot be cast to
> org.apache.hadoop.fs.ChecksumFileSystem
> The problem seems to be caused by the line 251 in FsShell#copyToLocal:
> {noformat}
> 250;      if (copyCrc) {
> 251:        ChecksumFileSystem csfs = (ChecksumFileSystem) srcFS;
>                ...
>              }
> {noformat}
> Copying crc files to local should not require the source file system to be ChecksumFileSystem.

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