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Date: Thu, 22 Jan 2015 09:48:34 +0000 (UTC)
From: "Hive QA (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HIVE-9341) Apply ColumnPrunning for noop PTFs
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    [ https://issues.apache.org/jira/browse/HIVE-9341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14287178#comment-14287178 ] 

Hive QA commented on HIVE-9341:
-------------------------------


{color:green}Overall{color}: +1 all checks pass

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12693757/HIVE-9341.4.patch.txt

{color:green}SUCCESS:{color} +1 7348 tests passed

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/2473/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/2473/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-2473/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12693757 - PreCommit-HIVE-TRUNK-Build

> Apply ColumnPrunning for noop PTFs
> ----------------------------------
>
>                 Key: HIVE-9341
>                 URL: https://issues.apache.org/jira/browse/HIVE-9341
>             Project: Hive
>          Issue Type: Improvement
>          Components: PTF-Windowing
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Trivial
>         Attachments: HIVE-9341.1.patch.txt, HIVE-9341.2.patch.txt, HIVE-9341.3.patch.txt, HIVE-9341.4.patch.txt
>
>
> Currently, PTF disables CP optimization, which can make a huge burden. For example,
> {noformat}
> select p_mfgr, p_name, p_size,
> rank() over (partition by p_mfgr order by p_name) as r,
> dense_rank() over (partition by p_mfgr order by p_name) as dr,
> sum(p_retailprice) over (partition by p_mfgr order by p_name rows between unbounded preceding and current row) as s1
> from noop(on part 
>   partition by p_mfgr
>   order by p_name
>   );
> STAGE PLANS:
>   Stage: Stage-1
>     Map Reduce
>       Map Operator Tree:
>           TableScan
>             alias: part
>             Statistics: Num rows: 26 Data size: 3147 Basic stats: COMPLETE Column stats: NONE
>             Reduce Output Operator
>               key expressions: p_mfgr (type: string), p_name (type: string)
>               sort order: ++
>               Map-reduce partition columns: p_mfgr (type: string)
>               Statistics: Num rows: 26 Data size: 3147 Basic stats: COMPLETE Column stats: NONE
>               value expressions: p_partkey (type: int), p_name (type: string), p_mfgr (type: string), p_brand (type: string), p_type (type: string), p_size (type: int), p_container (type: string), p_retailprice (type: double), p_comment (type: string), BLOCK__OFFSET__INSIDE__FILE (type: bigint), INPUT__FILE__NAME (type: string), ROW__ID (type: struct<transactionid:bigint,bucketid:int,rowid:bigint>)
> ...
> {noformat}
> There should be a generic way to discern referenced columns but before that, we know CP can be safely applied to noop functions.


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