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Date: Sun, 27 Jan 2013 20:29:14 +0000 (UTC)
From: "Ashutosh Chauhan (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12629419.1359257610585.198754.1359318554358@arcas>
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Subject: [jira] [Updated] (HIVE-3950) Remove code for merging files via MR
 job
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     [ https://issues.apache.org/jira/browse/HIVE-3950?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ashutosh Chauhan updated HIVE-3950:
-----------------------------------

    Attachment: hive-3950_1.patch

Updated patch with further cleanup. Updated on phabricator as well.
                
> Remove code for merging files via MR job
> ----------------------------------------
>
>                 Key: HIVE-3950
>                 URL: https://issues.apache.org/jira/browse/HIVE-3950
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>         Attachments: hive-3950_1.patch, hive-3950.patch
>
>
> Hive can merge files either via MR job or via map only job. Obviously, doing it via map-only job is more efficient, but there is an option of doing it via MR job as well because CombineFileInputFormat is available only in hadoop-0.20 and later. Since, we no longer support hadoop versions earlier than 20 anymore all that is now dead code, we should get rid of it.

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