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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7679) JOIN operator should update the column stats when number of rows changes
Date Tue, 12 Aug 2014 02:01:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14093643#comment-14093643
] 

Hive QA commented on HIVE-7679:
-------------------------------



{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/12661057/HIVE-7679.2.patch

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 5889 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union20
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/259/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/259/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-259/

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: 12661057

> JOIN operator should update the column stats when number of rows changes
> ------------------------------------------------------------------------
>
>                 Key: HIVE-7679
>                 URL: https://issues.apache.org/jira/browse/HIVE-7679
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor, Statistics
>    Affects Versions: 0.14.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>            Priority: Minor
>             Fix For: 0.13.0
>
>         Attachments: HIVE-7679.1.patch, HIVE-7679.2.patch
>
>
> JOIN operator does not update the column stats when the number of rows changes. All other
operators scales up/down the column statistics when the number of rows changes. Same should
be done for JOIN operator as well. Because of this dataSize might become negative as numNulls
can get bigger than numRows (if scaling down of column stats is not done).



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