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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-654) HDFS needs to support new rename introduced for FileContext
Date Sun, 27 Sep 2009 22:16:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12760115#action_12760115

dhruba borthakur commented on HDFS-654:

Would appreciate it a lot if you  can please explain in short what the new semantics would
be. what happens if the destination directory exists? what if the destination directory is
non-empty? what if the destination is already a file.

> HDFS needs to support new rename introduced for FileContext
> -----------------------------------------------------------
>                 Key: HDFS-654
>                 URL: https://issues.apache.org/jira/browse/HDFS-654
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 0.21.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>         Attachments: hdfs-654.1.patch, HDFS-654.patch
> New rename functionality with different semantics to overwrite the existing destination
was introduced for use in FileContext. Currently the default implementation in FileSystem
is not atomic. This change implements atomic rename operation for use by FileContext.

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