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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5085) Copying a file to local with Crc throws an exception
Date Mon, 02 Feb 2009 18:52:01 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HADOOP-5085:
----------------------------------

    Fix Version/s:     (was: 0.21.0)
                   0.20.0
           Status: Patch Available  (was: Open)

> 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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