Jason Dere created HIVE-17455:
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Summary: External LLAP client: connection to HS2 should be kept
open until explicitly closed
Key: HIVE-17455
URL: https://issues.apache.org/jira/browse/HIVE-17455
Project: Hive
Issue Type: Sub-task
Components: llap
Reporter: Jason Dere
Assignee: Jason Dere
In the case that a complex query (aggregation/join) is passed to external LLAP
client, the query result is first saved as a Hive temp table before being read
by LLAP to client. Currently the HS2 connection used to fetch the LLAP splits
is closed right after the splits are fetched, which means the temp table is
gone by the time LLAP tries to read it.
Try to keep the connection open so that the table is still around when LLAP
tries to read it. Add close methods which can be used to close the connection
when the client is done with the query.
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