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https://issues.apache.org/jira/browse/HIVE-21071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16742427#comment-16742427
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Hive QA commented on HIVE-21071:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12954842/HIVE-21071.6.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:green}SUCCESS:{color} +1 due to 15694 tests passed
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/15617/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/15617/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-15617/
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: 12954842 - PreCommit-HIVE-Build
> Improve getInputSummary
> -----------------------
>
> Key: HIVE-21071
> URL: https://issues.apache.org/jira/browse/HIVE-21071
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Affects Versions: 3.0.0, 4.0.0, 3.1.1
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Major
> Attachments: HIVE-21071.1.patch, HIVE-21071.2.patch,
> HIVE-21071.3.patch, HIVE-21071.4.patch, HIVE-21071.5.patch, HIVE-21071.6.patch
>
>
> There is a global lock in the {{getInptSummary}} code, so it is important
> that it be fast. The current implementation has quite a bit of overhead that
> can be re-engineered.
> For example, the current implementation keeps a map of File Path to
> ContentSummary object. This map is populated by several threads
> concurrently. The method then loops through the map, in a single thread, at
> the end to add up all of the ContentSummary objects and ignores the paths.
> The code can be be re-engineered to not use a map, or a collection at all, to
> store the results and instead just keep a running tally. By keeping a tally,
> there is no {{O\(n)}} operation at the end to perform the addition.
> There are other things can be improved. The method returns an object which
> is never used anywhere, so change method to void return type.
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