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https://issues.apache.org/jira/browse/HIVE-21425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Mollitor updated HIVE-21425:
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Attachment: HIVE-21425.1.patch
> Use DirectExecutorService for getInputSummary
> ---------------------------------------------
>
> Key: HIVE-21425
> URL: https://issues.apache.org/jira/browse/HIVE-21425
> 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-21425.1.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {code:java|title=Utilities.java}
> int numExecutors = getMaxExecutorsForInputListing(ctx.getConf(),
> pathNeedProcess.size());
> if (numExecutors > 1) {
> LOG.info("Using {} threads for getContentSummary", numExecutors);
> executor = Executors.newFixedThreadPool(numExecutors,
> new ThreadFactoryBuilder().setDaemon(true)
> .setNameFormat("Get-Input-Summary-%d").build());
> } else {
> executor = null;
> }
> {code}
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java#L2482-L2490
> Instead of using a 'null' {{ExecutorService}}, use Guava's
> {{DirectExecutorService}} and remove special casing for a 'null' value.
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