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Posted to issues@hawq.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/07/14 23:16:20 UTC

[jira] [Commented] (HAWQ-927) Send Projection Info Data from HAWQ to PXF

    [ https://issues.apache.org/jira/browse/HAWQ-927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378574#comment-15378574 ] 

ASF GitHub Bot commented on HAWQ-927:
-------------------------------------

GitHub user kavinderd opened a pull request:

    https://github.com/apache/incubator-hawq/pull/796

    HAWQ-927. Pass ProjectionInfo data to PXF

    This commit makes the necessary modifications to the HAWQ side of
    the codebase to add a list of indices of projected columns

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/kavinderd/incubator-hawq HAWQ-927

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-hawq/pull/796.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #796
    
----
commit 68c6dd7ea6487b8362627fd0a4aa8c25a355abd3
Author: Kavinder Dhaliwal <ka...@gmail.com>
Date:   2016-07-12T01:20:16Z

    HAWQ-927. Pass ProjectionInfo data to PXF
    
    This commit makes the necessary modifications to the HAWQ side of
    the codebase to add a list of indices of projected columns

----


> Send Projection Info Data from HAWQ to PXF
> ------------------------------------------
>
>                 Key: HAWQ-927
>                 URL: https://issues.apache.org/jira/browse/HAWQ-927
>             Project: Apache HAWQ
>          Issue Type: Sub-task
>          Components: External Tables
>            Reporter: Kavinder Dhaliwal
>            Assignee: Kavinder Dhaliwal
>             Fix For: backlog
>
>
> To achieve column projection at the level of PXF or the underlying readers we need to first send this data as a Header/Param to PXF. Currently, PXF has no knowledge whether a query requires all columns or a subset of columns.



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