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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7836) Ease-out denominator for multi-attribute join case in statistics annotation
Date Fri, 22 Aug 2014 15:10:21 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14106938#comment-14106938
] 

Hive QA commented on HIVE-7836:
-------------------------------



{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/12663533/HIVE-7836.1.patch

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 6115 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_parquet_join
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_dynpart_sort_opt_vectorization
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/459/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/459/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-459/

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: 2 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12663533

> Ease-out denominator for multi-attribute join case in statistics annotation
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-7836
>                 URL: https://issues.apache.org/jira/browse/HIVE-7836
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor, Statistics
>    Affects Versions: 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>         Attachments: HIVE-7836.1.patch
>
>
> In cases where number of relations involved in join is less than the number of join attributes
the denominator of join rule can get larger resulting in aggressive row count estimation.



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