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Posted to dev@hive.apache.org by "Ning Zhang (JIRA)" <ji...@apache.org> on 2010/12/16 00:43:01 UTC

[jira] Updated: (HIVE-1852) Reduce unnecessary DFSClient.rename() calls

     [ https://issues.apache.org/jira/browse/HIVE-1852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ning Zhang updated HIVE-1852:
-----------------------------

    Status: Patch Available  (was: Open)

> Reduce unnecessary DFSClient.rename() calls
> -------------------------------------------
>
>                 Key: HIVE-1852
>                 URL: https://issues.apache.org/jira/browse/HIVE-1852
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Ning Zhang
>            Assignee: Ning Zhang
>         Attachments: HIVE-1852.patch
>
>
> In Hive client side (MoveTask etc), DFSCleint.rename() is called for every file inside a directory. It is very expensive for a large directory in a busy DFS namenode. We should replace it with a single rename() call on the whole directory. 

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