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https://issues.apache.org/jira/browse/HIVE-5244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thejas M Nair resolved HIVE-5244.
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Resolution: Duplicate
Duplicate of HIVE-4239
> Concurrent query compilation in HiveServer2
> -------------------------------------------
>
> Key: HIVE-5244
> URL: https://issues.apache.org/jira/browse/HIVE-5244
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Reporter: Vaibhav Gumashta
> Assignee: Vaibhav Gumashta
>
> Currently, in an HS2 process, multiple threads block on query compilation
> (check Driver#runInternal) due to coarse level threading at the Driver class
> object level. This can be a severe performance bottleneck, especially for a
> remote server serving multiple clients.
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