Github user liufengdb commented on the issue:
https://github.com/apache/spark/pull/19989
I think this method can take care of resource clean up automatically:
https://github.com/apache/spark/blob/master/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/session/SessionManager.java#L151
Can you really make a heap dump and find out why the sessions are not
cleaned up?
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