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https://issues.apache.org/jira/browse/HIVE-11406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14647474#comment-14647474
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Hive QA commented on HIVE-11406:
--------------------------------
{color:green}Overall{color}: +1 all checks pass
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12747946/HIVE-11406.01.patch
{color:green}SUCCESS:{color} +1 9276 tests passed
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/4758/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/4758/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-4758/
Messages:
{noformat}
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: 12747946 - PreCommit-HIVE-TRUNK-Build
> Vectorization: StringExpr::compare() == 0 is bad for performance
> ----------------------------------------------------------------
>
> Key: HIVE-11406
> URL: https://issues.apache.org/jira/browse/HIVE-11406
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 1.3.0, 2.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-11406.01.patch
>
>
> {{StringExpr::compare() == 0}} is forced to evaluate the whole memory
> comparison loop for differing lengths of strings, though there is no
> possibility they will ever be equal.
> Add a {{StringExpr::equals}} which can be a smaller and tighter loop.
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