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https://issues.apache.org/jira/browse/HIVE-21426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16790820#comment-16790820
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Hive QA commented on HIVE-21426:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12962129/HIVE-21426.1.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:green}SUCCESS:{color} +1 due to 15824 tests passed
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/16469/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/16469/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-16469/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12962129 - PreCommit-HIVE-Build
> Remove Utilities Global Random
> ------------------------------
>
> Key: HIVE-21426
> URL: https://issues.apache.org/jira/browse/HIVE-21426
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Affects Versions: 4.0.0, 3.2.0
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Minor
> Labels: pull-request-available
> Attachments: HIVE-21426.1.patch, HIVE-21426.1.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java#L253
> Remove global {{Random}} object in favor of {{ThreadLocalRandom}}.
> {quote}
> ThreadLocalRandom is initialized with an internally generated seed that may
> not otherwise be modified. When applicable, use of ThreadLocalRandom rather
> than shared Random objects in concurrent programs will typically encounter
> much less overhead and contention.
> {quote}
> https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadLocalRandom.html
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