[HBASE-17221] Abstract out an interface for RpcServer.Call

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Hadoop Flags: Incompatible change, Reviewed

Release Note

Provide an interface RpcCall on the server side.
RpcServer.Call now is marked as @InterfaceAudience.Private, and implements the interface RpcCall,

• Assignee: Jerry He
• Reporter: Jerry He
• Created: 30/Nov/16 23:37
• Updated: 06/Dec/16 20:30
• Resolved: 05/Dec/16 18:28

Description

RpcServer.Call is a concrete class, but it is marked as:

@InterfaceAudience.LimitedPrivate({HBaseInterfaceAudience.COPROC, HBaseInterfaceAudience.PHOENIX})

Let's abstract out an interface out of it for potential consumers that want to pass it around.