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From "Lefty Leverenz (JIRA)" <>
Subject [jira] [Commented] (HIVE-10114) Split strategies for ORC
Date Tue, 07 Apr 2015 19:20:12 GMT


Lefty Leverenz commented on HIVE-10114:

No doc needed?

This adds *hive.exec.orc.split.strategy* to but the description says it is not
a user level config.  Is it an admin level config or just for internal use?

> Split strategies for ORC
> ------------------------
>                 Key: HIVE-10114
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 1.2.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>             Fix For: 1.2.0
>         Attachments: HIVE-10114.1.patch, HIVE-10114.2.patch, HIVE-10114.3.patch, HIVE-10114.4.patch,
> ORC split generation does not have clearly defined strategies for different scenarios
(many small orc files, few small orc files, many large files etc.). Few strategies like storing
the file footer in orc split, making entire file as a orc split already exists. This JIRA
to make the split generation simpler, support different strategies for various use cases (BI,
ETL, ACID etc.) and to lay the foundation for HIVE-7428.

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