[jira] [Commented] (DRILL-4083) Drill not using HiveDrillNativeParquetScan if no column is needed to be read from HIVE

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-4083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15003494#comment-15003494 ] 

ASF GitHub Bot commented on DRILL-4083:
---------------------------------------

GitHub user hsuanyi opened a pull request:

    https://github.com/apache/drill/pull/253

    DRILL-4083: ScanPrel's CPU cost should not be zero even if column cou…

    …nt is zero

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

    $ git pull https://github.com/hsuanyi/incubator-drill DRILL-4083

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

    https://github.com/apache/drill/pull/253.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 #253
    
----
commit 736057564b70ff14b14b9ed3f5419979169d6fac
Author: Hsuan-Yi Chu <hs...@usc.edu>
Date:   2015-11-12T23:01:10Z

    DRILL-4083: ScanPrel's CPU cost should not be zero even if column count is zero

----


> Drill not using HiveDrillNativeParquetScan if no column is needed to be read from HIVE
> --------------------------------------------------------------------------------------
>
>                 Key: DRILL-4083
>                 URL: https://issues.apache.org/jira/browse/DRILL-4083
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Hive
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Sean Hsuan-Yi Chu
>
> For example, for a query such as:
> {code}
> Select count(*) from hive.parquetTable
> {code}
> would not use HiveDrillNativeParquetScan. However, the following query will use:
> {code}
> Select count(*) from hive.parquetTable where column > 0
> {code}
> Ideally, both should use the same HiveDrillNativeParquetScan



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