hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4123) The RLE encoding for ORC can be improved
Date Thu, 07 Aug 2014 21:17:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14089866#comment-14089866
] 

Lefty Leverenz commented on HIVE-4123:
--------------------------------------

Doc note:  This added configuration parameter *hive.exec.orc.write.format* with a default
value of 0.11, which was changed to null by HIVE-5091 before the release.

*hive.exec.orc.write.format* is documented in the wiki here:

* [Configuration Properties -- hive.exec.orc.write.format | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-hive.exec.orc.write.format]

> The RLE encoding for ORC can be improved
> ----------------------------------------
>
>                 Key: HIVE-4123
>                 URL: https://issues.apache.org/jira/browse/HIVE-4123
>             Project: Hive
>          Issue Type: New Feature
>          Components: File Formats
>    Affects Versions: 0.12.0
>            Reporter: Owen O'Malley
>            Assignee: Prasanth J
>              Labels: orcfile
>             Fix For: 0.12.0
>
>         Attachments: HIVE-4123-8.patch, HIVE-4123.1.git.patch.txt, HIVE-4123.2.git.patch.txt,
HIVE-4123.3.patch.txt, HIVE-4123.4.patch.txt, HIVE-4123.5.txt, HIVE-4123.6.txt, HIVE-4123.7.txt,
HIVE-4123.8.txt, HIVE-4123.8.txt, HIVE-4123.patch.txt, ORC-Compression-Ratio-Comparison.xlsx
>
>
> The run length encoding of integers can be improved:
> * tighter bit packing
> * allow delta encoding
> * allow longer runs



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message