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Date: Thu, 23 Oct 2014 22:37:33 +0000 (UTC)
From: "Xiaobing Zhou (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12750227.1414103035000.326876.1414103853775@Atlassian.JIRA>
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Subject: [jira] [Commented] (HIVE-8584) Setting
 hive.exec.orc.default.compress to ZLIB will lead to orc file size delta
 byte(s) shorter on Windows than Linux
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    [ https://issues.apache.org/jira/browse/HIVE-8584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14182089#comment-14182089 ] 

Xiaobing Zhou commented on HIVE-8584:
-------------------------------------

In the dumping files attached, *-1-* and *-2-* means PST and non-PST timezone, respectively.

> Setting hive.exec.orc.default.compress to ZLIB will lead to orc file size delta byte(s) shorter on Windows than Linux
> ---------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-8584
>                 URL: https://issues.apache.org/jira/browse/HIVE-8584
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.14.0
>         Environment: Windows
>            Reporter: Xiaobing Zhou
>            Assignee: Xiaobing Zhou
>         Attachments: orc-win-none-1.dump, orc-win-none-2.dump, orc-win-snappy-1.dump, orc-win-snappy-2.dump, orc-win-zlib-1.dump, orc-win-zlib-2.dump, orc_analyze.q
>
>
> repo steps:
> 1. run query orc_analyze.q
> 2. hive --orcfiledump <target_orc_file_generated>
> run 1 and 2 on PST timezone on Linux, and one more time on other timezone e.g. CST on Windows.
> Compare two target orc file dumping. Windows orc file is 1 byte shorter than Linux one.
> That's the case even if running 1 and 2 on Windows for different timezones, however, no problem on Linux.
> The issue only exists by using ZLIB mode, eventually OS native compression lib is used.


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