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From "Eric Sun (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7189) Hive does not store column names in ORC
Date Mon, 11 Apr 2016 20:15:25 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15235892#comment-15235892
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Eric Sun commented on HIVE-7189:
--------------------------------

Hi [~daijy], we are not yet on 1.2.1

I will ping [~freepeter] to see if we can backport this fix.

Thanks a lot!

> Hive does not store column names in ORC
> ---------------------------------------
>
>                 Key: HIVE-7189
>                 URL: https://issues.apache.org/jira/browse/HIVE-7189
>             Project: Hive
>          Issue Type: Bug
>          Components: File Formats, ORC
>    Affects Versions: 0.12.0, 0.13.0
>            Reporter: Chris Drome
>            Assignee: Daniel Dai
>
> We uncovered the following discrepancy between writing ORC files through Pig and Hive:
> ORCFile header contains the name of the columns. Storing through Pig (ORCStorage or HCatStorer),
the column names are stored fine. But when stored through hive they are stored as _col0, _col1,....,_col99
and hive uses the partition schema to map the column names. Reading the same file through
Pig then has problems as user will have to manually map columns.



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