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