[
https://issues.apache.org/jira/browse/HIVE-1852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973372#action_12973372
]
He Yongqiang commented on HIVE-1852:
------------------------------------
I remember i tried to use FileSystem.delete. but it did not work, so changed to
use FsShell. So possibly you need to revert the change.
There is no testcase in Hive covering it. I did the test manually in our
cluster.
> 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-1852.2.patch, HIVE-1852.3.patch, 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
