Xuefu Zhang created HIVE-16183:
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Summary: 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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