Prasanth Jayachandran created HIVE-23466:
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Summary: ZK registry base should remove only specific instance
instead of host
Key: HIVE-23466
URL: https://issues.apache.org/jira/browse/HIVE-23466
Project: Hive
Issue Type: Bug
Affects Versions: 4.0.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
When ZKRegistryBase detects new ZK nodes it maintains path based cache and host
based cache. The host based cached already handles multiple instances running
in same host. But even if single instance is removed all instances belonging to
the host are removed.
Another issue is that, if single host has multiple instances it returns a Set
with no ordering. Ideally, we want the newest instance to be top of the set
(use TreeSet maybe?).
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