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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7063) Optimize for the Top N within a Group use case
Date Fri, 20 Jun 2014 01:29:24 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14038234#comment-14038234
] 

Hive QA commented on HIVE-7063:
-------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12651239/HIVE-7063.2.patch

{color:red}ERROR:{color} -1 due to 5 failed/errored test(s), 5656 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_implicit_cast1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_dynpart_sort_optimization
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_root_dir_external_table
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_ctas
org.apache.hive.jdbc.miniHS2.TestHiveServer2.testConnection
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/519/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/519/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-Build-519/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 5 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12651239

> Optimize for the Top N within a Group use case
> ----------------------------------------------
>
>                 Key: HIVE-7063
>                 URL: https://issues.apache.org/jira/browse/HIVE-7063
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>         Attachments: HIVE-7063.1.patch, HIVE-7063.2.patch
>
>
> It is common to rank within a Group/Partition and then only return the Top N entries
within each Group.
> With Streaming mode for Windowing, we should push the post filter on the rank into the
Windowing processing as a Limit expression.



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