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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16182) Semijoin: Avoid VectorHashKeyWrapper allocations for the bloom hash aggregate
Date Sat, 11 Mar 2017 20:35:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15906307#comment-15906307
] 

Hive QA commented on HIVE-16182:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12857490/HIVE-16182.1.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:green}SUCCESS:{color} +1 due to 10339 tests passed

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/4090/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/4090/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-4090/

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
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12857490 - PreCommit-HIVE-Build

> Semijoin: Avoid VectorHashKeyWrapper allocations for the bloom hash aggregate
> -----------------------------------------------------------------------------
>
>                 Key: HIVE-16182
>                 URL: https://issues.apache.org/jira/browse/HIVE-16182
>             Project: Hive
>          Issue Type: Improvement
>          Components: Vectorization
>    Affects Versions: 2.2.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>              Labels: performance
>         Attachments: HIVE-16182.1.patch
>
>
> To avoid GC spam during the hash aggregate part of the bloom filter, the key for the
semijoin can be special-cased as an immutable empty key.



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