[jira] [Commented] (HIVE-11919) Hive Union Type Mismatch

["Hive QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-11919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904441#comment-14904441 ] 

Hive QA commented on HIVE-11919:
--------------------------------



{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/12761727/HIVE-11919.1.patch

{color:red}ERROR:{color} -1 due to 5 failed/errored test(s), 9563 tests executed
*Failed tests:*
{noformat}
TestMiniTezCliDriver-vector_partition_diff_num_cols.q-vectorization_10.q-orc_merge9.q-and-12-more - did not produce a TEST-*.xml file
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_vector_groupby_reduce
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_vector_groupby_reduce
org.apache.hive.hcatalog.api.TestHCatClient.testTableSchemaPropagation
org.apache.hive.hcatalog.streaming.TestStreaming.testTimeOutReaper
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/5383/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/5383/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-5383/

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: 12761727 - PreCommit-HIVE-TRUNK-Build

> Hive Union Type Mismatch
> ------------------------
>
>                 Key: HIVE-11919
>                 URL: https://issues.apache.org/jira/browse/HIVE-11919
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Laljo John Pullokkaran
>            Assignee: Laljo John Pullokkaran
>         Attachments: HIVE-11919.1.patch
>
>
> In Hive for union right most type wins out for most primitive types during plan gen. However when union op gets initialized the type gets switched.
> This could result in bad data & type exceptions.
> This happens only in non cbo mode.
> In CBO mode, Hive would add explicit type casts that would prevent such type issues.
> Sample Query: 
> select cd/sum(cd) over() from(select cd from u1 union all select cd from u2 union all select cd from u3)u4;



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