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Posted to dev@hive.apache.org by "Lefty Leverenz (JIRA)" <ji...@apache.org> on 2014/11/09 23:01:34 UTC

[jira] [Commented] (HIVE-7509) Fast stripe level merging for ORC

    [ https://issues.apache.org/jira/browse/HIVE-7509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204141#comment-14204141 ] 

Lefty Leverenz commented on HIVE-7509:
--------------------------------------

Doc note:  HIVE-6586 updated the description of *hive.merge.orcfile.stripe.level* in HiveConf.java to include *hive.merge.tezfiles*.

> Fast stripe level merging for ORC
> ---------------------------------
>
>                 Key: HIVE-7509
>                 URL: https://issues.apache.org/jira/browse/HIVE-7509
>             Project: Hive
>          Issue Type: New Feature
>    Affects Versions: 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>              Labels: orcfile
>             Fix For: 0.14.0
>
>         Attachments: HIVE-7509.1.patch, HIVE-7509.2.patch, HIVE-7509.3.patch, HIVE-7509.4.patch, HIVE-7509.5.patch
>
>
> Similar to HIVE-1950, add support for fast stripe level merging of ORC files through CONCATENATE command and conditional merge task. This fast merging is ideal for merging many small ORC files to a larger file without decompressing and decoding the data of small orc files.



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