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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12788) Setting hive.optimize.union.remove to TRUE will break UNION ALL with aggregate functions
Date Mon, 11 Jan 2016 13:17:39 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15091878#comment-15091878
] 

Hive QA commented on HIVE-12788:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12781454/HIVE-12788.1.patch

{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 6 failed/errored test(s), 10004 tests executed
*Failed tests:*
{noformat}
TestHWISessionManager - did not produce a TEST-*.xml file
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_union
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_uri_import
org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl.testMultiSessionMultipleUse
org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl.testSingleSessionMultipleUse
org.apache.hive.jdbc.TestSSL.testSSLVersion
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6587/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6587/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-6587/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
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: 6 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12781454 - PreCommit-HIVE-TRUNK-Build

> Setting hive.optimize.union.remove to TRUE will break UNION ALL with aggregate functions
> ----------------------------------------------------------------------------------------
>
>                 Key: HIVE-12788
>                 URL: https://issues.apache.org/jira/browse/HIVE-12788
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>    Affects Versions: 1.1.1
>            Reporter: Eric Lin
>            Assignee: Chaoyu Tang
>         Attachments: HIVE-12788.1.patch, HIVE-12788.patch
>
>
> See the test case below:
> {code}
> 0: jdbc:hive2://localhost:10000/default> create table test (a int);
> 0: jdbc:hive2://localhost:10000/default> insert overwrite table test values (1);
> 0: jdbc:hive2://localhost:10000/default> set hive.optimize.union.remove=true;
> No rows affected (0.01 seconds)
> 0: jdbc:hive2://localhost:10000/default> set hive.mapred.supports.subdirectories=true;
> No rows affected (0.007 seconds)
> 0: jdbc:hive2://localhost:10000/default> SELECT COUNT(1) FROM test UNION ALL SELECT
COUNT(1) FROM test;
> +----------+--+
> | _u1._c0  |
> +----------+--+
> +----------+--+
> {code}
> UNION ALL without COUNT function will work as expected:
> {code}
> 0: jdbc:hive2://localhost:10000/default> select * from test UNION ALL SELECT * FROM
test;
> +--------+--+
> | _u1.a  |
> +--------+--+
> | 1      |
> | 1      |
> +--------+--+
> {code}
> Run the same query without setting hive.mapred.supports.subdirectories and hive.optimize.union.remove
to true will give correct result:
> {code}
> 0: jdbc:hive2://localhost:10000/default> set hive.optimize.union.remove;
> +-----------------------------------+--+
> |                set                |
> +-----------------------------------+--+
> | hive.optimize.union.remove=false  |
> +-----------------------------------+--+
> 0: jdbc:hive2://localhost:10000/default> SELECT COUNT(1) FROM test UNION ALL SELECT
COUNT(1) FROM test;
> +----------+--+
> | _u1._c0  |
> +----------+--+
> | 1        |
> | 1        |
> +----------+--+
> {code}



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