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Date: Wed, 27 Jul 2016 01:54:20 +0000 (UTC)
From: "Rui Li (JIRA)" <jira@apache.org>
To: issues@hive.apache.org
Message-ID: <JIRA.12992139.1469425209000.141806.1469584460559@Atlassian.JIRA>
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Subject: [jira] [Commented] (HIVE-14323) Reduce number of FS permissions and
 redundant FS operations
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archived-at: Wed, 27 Jul 2016 01:54:22 -0000


    [ https://issues.apache.org/jira/browse/HIVE-14323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15394925#comment-15394925 ] 

Rui Li commented on HIVE-14323:
-------------------------------

I see. Thanks Steve!

> Reduce number of FS permissions and redundant FS operations
> -----------------------------------------------------------
>
>                 Key: HIVE-14323
>                 URL: https://issues.apache.org/jira/browse/HIVE-14323
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Rajesh Balamohan
>            Assignee: Rajesh Balamohan
>            Priority: Minor
>         Attachments: HIVE-14323.1.patch, HIVE-14323.2.patch
>
>
> Some examples are given below.
> 1. When creating stage directory, FileUtils sets the directory permissions by running a set of chgrp and chmod commands. In systems like S3, this would not be relevant.
> 2. In some cases, fs.delete() is followed by fs.exists(). In this case, it might be redundant to check for exists() (lookup ops are expensive in systems like S3). 


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