Prasanth Jayachandran created HIVE-18281:
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Summary: HiveServer2 HA for LLAP and Workload Manager
Key: HIVE-18281
URL: https://issues.apache.org/jira/browse/HIVE-18281
Project: Hive
Issue Type: Bug
Affects Versions: 3.0.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
When running HS2 with LLAP and Workload Manager, HS2 becomes single point of
failure as some of the states for workload management and scheduling are
maintained in-memory.
The proposal is to support Active/Passive mode of high availability in which,
all HS2 and tez AMs registers with ZooKeeper and a leader have to be chosen
which will maintain stateful information. Clients using service discovery will
always connect to the leader for submitting queries. There will also be some
responsibilities for the leader, failover handling, tez session reconnect etc.
Will upload some more detailed information in a separate doc.
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