Mustafa Iman created HIVE-23830:

             Summary: Remove shutdownhook after query is completed
                 Key: HIVE-23830
             Project: Hive
          Issue Type: Bug
            Reporter: Mustafa Iman
            Assignee: Mustafa Iman

Each query registers a shutdownHook to release transactional resources in case 
JVM shuts down mid query. These hooks are not cleaned up until session is 
closed. Session life time is unbounded. So these hooks are a memory leak. They 
should be cleaned as soon as transaction is completed.

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