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Date: Wed, 15 Apr 2009 14:12:15 -0700 (PDT)
From: "Suresh Srinivas (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-5671) DistCp.sameFile(..) should return
 true if src fs does not support checksum
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    [ https://issues.apache.org/jira/browse/HADOOP-5671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12699389#action_12699389 ] 

Suresh Srinivas commented on HADOOP-5671:
-----------------------------------------

Based on the documentation of the method {{FileSystem.getFileChecksum()}}, not supporting checksum is indicated by {{null}} return and *not* by throwing exception. So should we ensure the classes extending {{FileSystem}} honor this?

> DistCp.sameFile(..) should return true if src fs does not support checksum
> --------------------------------------------------------------------------
>
>                 Key: HADOOP-5671
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5671
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: tools/distcp
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 5671_20090414.patch, 5671_20090415.patch
>
>
> In DistCp.sameFile(..), if src FileSystem does not support file checksum, it should return true.

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