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From "Brock Noland (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7513) Add ROW__ID VirtualColumn
Date Sun, 17 Aug 2014 21:16:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14100115#comment-14100115
] 

Brock Noland commented on HIVE-7513:
------------------------------------

I noticed in this change that the constants in VirtualColumn are not final. I was going to
ask if you could add that since there is other cleanup in this same change. However, given
it's already been approved I created HIVE-7760 to track that.

> Add ROW__ID VirtualColumn
> -------------------------
>
>                 Key: HIVE-7513
>                 URL: https://issues.apache.org/jira/browse/HIVE-7513
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>    Affects Versions: 0.13.1
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>         Attachments: HIVE-7513.10.patch, HIVE-7513.11.patch, HIVE-7513.12.patch, HIVE-7513.13.patch,
HIVE-7513.14.patch, HIVE-7513.3.patch, HIVE-7513.4.patch, HIVE-7513.5.patch, HIVE-7513.8.patch,
HIVE-7513.9.patch, HIVE-7513.codeOnly.txt
>
>
> In order to support Update/Delete we need to read rowId from AcidInputFormat and pass
that along through the operator pipeline (built from the WHERE clause of the SQL Statement)
so that it can be written to the delta file by the update/delete (sink) operators.
> The parser will add this column to the projection list to make sure it's passed along.



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