Sahil Takiar created HIVE-20790:
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             Summary: SparkSession should be able to close a session while it 
is being opened
                 Key: HIVE-20790
                 URL: https://issues.apache.org/jira/browse/HIVE-20790
             Project: Hive
          Issue Type: Sub-task
          Components: Spark
            Reporter: Sahil Takiar


In HIVE-14162 we adding locks to {{SparkSessionImpl}} to support scenarios 
where we want to close the session due to a timeout. However, the locks remove 
the ability to close a session while it is being opened. This is important to 
allow cancelling of a session while it is being setup. This can be useful on 
busy clusters where there may not be enough YARN containers to setup the Spark 
Remote Driver.



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