Wechar created HIVE-27284:
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Summary: Make HMSHandler proxy pluggable
Key: HIVE-27284
URL: https://issues.apache.org/jira/browse/HIVE-27284
Project: Hive
Issue Type: Improvement
Components: Hive
Affects Versions: 4.0.0-alpha-2
Reporter: Wechar
Assignee: Wechar
Currently HMS use the only proxy implementation of HMSHandler i.e
{{RetryingHMSHandler}}, resulting in some code hacks in {{HMSHandler}}. For
example when test HMS timeout, we add additional static fields
{{testTimeoutEnabled}} and {{testTimeoutValue}}, and add sleep code in
{{create_database}} method, which is not elegant and flexible.
So we introduce a new conf {{metastore.hmshandler.proxy}} to configure proxy
class for HMSHandler, it will be more convenient to extend the new proxy of
HMSHandler and can separate test code from HMSHandler.
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