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Posted to dev@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2017/03/12 09:04:04 UTC

[jira] [Created] (HIVE-16183) Fix potential thread safety issues with static variables

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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