Zhihua Deng created HIVE-29402:
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Summary: Decouple the complex operation from HMSHandler
Key: HIVE-29402
URL: https://issues.apache.org/jira/browse/HIVE-29402
Project: Hive
Issue Type: Wish
Reporter: Zhihua Deng
In older versions, the HMSHandler is a "God Object" that handled everything
from Thrift requests and authorization to file system operations and raw
database transactions.
To decouple these operations from HMSHandler, HIVE-27224 introduces the
AbstractOperationHandler, where a handler can deal with a specific request, it
handles the file system operations, transactions and notifying the listener
reacting to this request only, the HMSHandler takes care of the rest, such as
audit, exception and the respond to the client.
By this way the HMSHandler has a simpler routine, which makes it easier to
maintain and optimize in the future.
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