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https://issues.apache.org/jira/browse/HIVE-16183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xuefu Zhang reassigned HIVE-16183:
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> Fix potential thread safety issues with static variables
> --------------------------------------------------------
>
> Key: HIVE-16183
> URL: https://issues.apache.org/jira/browse/HIVE-16183
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
>
> Many concurrency issues have been found with respect to class static variable
> usages. With fact that HS2 supports concurrent compilation and task execution
> as well as some backend engines (such as Spark) running multiple tasks in a
> single JVM, traditional assumption (or mindset) of single threaded execution
> needs to be abandoned.
> This purpose of this JIRA is to do a global scan of static variables in Hive
> code base, and correct potential thread-safety issues. However, it's not
> meant to be exhaustive.
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