Jurriaan Mous created HBASE-12597:
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Summary: Add RpcClient interface and enable changing of RpcClient
implementation
Key: HBASE-12597
URL: https://issues.apache.org/jira/browse/HBASE-12597
Project: HBase
Issue Type: Improvement
Components: Client
Reporter: Jurriaan Mous
Currently HConnectionImplementation works with the included RpcClient which is
a direct implementation and not defined by an interface.
It would be great to be able to swap out the default RpcClient with another
implementation which can also be controlled by the default
HConnectionImplementation.
Suggested changes:
- Create a RpcClient interface which defines all the ways
HConnectionImplementation interacts with an RPC client. Like getting a blocking
protobuf service interface or closing the client.
- Define which RpcClient implementation to construct by setting a configuration
variable which defaults to the current RpcClient.
- Possibly create an abstract RpcClient class to only load all the basic Rpc
layer configurations to be used in an implementation.
Why? It enables experimentation with RpcClients which could enable new features
or could be more performant than the included client.
I created a new RpcClient implementation based on Netty which can also be
called asynchronously. It would be great to also be able to use this RpcClient
in all the default ways and tests to see if there are any issues with it.
https://github.com/jurmous/async-hbase-client/
https://github.com/jurmous/async-hbase-client/blob/master/src/main/java/org/apache/hadoop/hbase/ipc/AsyncRpcClient.java
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