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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2760) Distcp must be able to copy from .16 to .15
Date Fri, 01 Feb 2008 17:31:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564839#action_12564839
] 

Doug Cutting commented on HADOOP-2760:
--------------------------------------

Shouldn't this be a 0.16 bug?  We shouldn't force folks to upgrade their 0.15 clusters before
they can access data from a 0.16 cluster, but rather just fix 0.16 to interoperate with 0.15.


> Distcp must be able to copy from .16 to .15
> -------------------------------------------
>
>                 Key: HADOOP-2760
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2760
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Robert Chansler
>            Assignee: Tsz Wo (Nicholas), SZE
>             Fix For: 0.15.4
>
>
> Typically the "from" source files are referenced via HTTP, a strategy to evade version
incompatibilities. In .16, with permission checking, there is no presumption that any particular
file can be read via the web server.
> There must be some alternative for supplying user credentials so as to enable down-version
copies.

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