Sergey Shelukhin created HIVE-20547:
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Summary: HS2: support Tez sessions started by someone else (part 1)
Key: HIVE-20547
URL: https://issues.apache.org/jira/browse/HIVE-20547
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
Assignee: Sergey Shelukhin
Attachments: HIVE-20547.patch
The registry/configs/some code is based on a private patch by [~prasanth_j].
The patch refactors tez pool session to use composition instead of
implementation inheritance from TezSessionState, to allow for two
implementations of TezSessionState.
For now it's blocked on getClient API in Tez that will be available after 0.9.3
release; however I commented out that path to check that refactoring passes
tests.
When 0.9.3 becomes available, we can uncomment and commit.
In part 2, we may add some tests, and also consider other changes that are
required for external sessions (e.g. KillQuery, where we cannot assume YARN is
present).
We may also consider a WM change that allows for proportional session
distribution when the number of external sessions and the number of
admin-specified sessions doesn't match, or at least some validation to see that
the external sessions are available when applying a RP.
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