[HIVE-15764] Tez session doesn't get released TezSessionPool on query cancellation

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.2.1, 2.1.1
• Component/s: Tez
• Assignee: Thejas Nair
• Reporter: Thejas Nair
• Created: 31/Jan/17 07:05
• Updated: 31/Jan/17 23:00

Description

With HiveServer2, tez execution engine, and hive.server2.tez.initialize.default.sessions=true, if a query is cancelled via jdbc, the tez session doesn't get released back to the session pool.
This can cause the query processing of new queries to get stuck, waiting for a tez session to be available.