Prasanth Jayachandran created HIVE-22859:
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Summary: Tez external sessions are leaking
Key: HIVE-22859
URL: https://issues.apache.org/jira/browse/HIVE-22859
Project: Hive
Issue Type: Bug
Affects Versions: 4.0.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
When Tez external/unmanaged sessions are used, TezSessionPoolManager "opens"
the session using ApplicationId which is essentially connecting to existing
external/unmanaged session. But when the session is returned it is not closed
(close for external session is essentially releasing it from sessions list and
not really killing the session). If a session is not closed, it is never
removed from openSessions linked list that HS2 maintains hence leaking the
session.
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