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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8349) DISTRIBUTE BY should work with tez auto-parallelism enabled
Date Thu, 16 Oct 2014 03:40:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14173305#comment-14173305
] 

Hive QA commented on HIVE-8349:
-------------------------------



{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/12674919/HIVE-8349.4.patch

{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 6558 tests executed
*Failed tests:*
{noformat}
org.apache.hive.beeline.TestSchemaTool.testSchemaInit
org.apache.hive.beeline.TestSchemaTool.testSchemaUpgrade
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/1287/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/1287/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-1287/

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: 12674919
 - PreCommit-HIVE-TRUNK-Build

> DISTRIBUTE BY should work with tez auto-parallelism enabled
> -----------------------------------------------------------
>
>                 Key: HIVE-8349
>                 URL: https://issues.apache.org/jira/browse/HIVE-8349
>             Project: Hive
>          Issue Type: Bug
>          Components: Physical Optimizer, Tez
>    Affects Versions: 0.14.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>             Fix For: 0.14.0
>
>         Attachments: HIVE-8349.1.patch, HIVE-8349.2.patch, HIVE-8349.3.patch, HIVE-8349.4.patch
>
>
> Current implementation of DISTRIBUTE BY does not work when tez auto-parallelism is turned
on, because of hashCode distribution issues.
> In case of distribute by, the key is actually zero bytes, with only partitioning enabled
via hashCode - this adversely affects the uniform hashing implementation.
> In an ideal scenario, the edge should go from the ordered kv input to the unordered partitioned
edge, to speed up the processing massively.



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