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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6279) Remove the RpcController argument from the PB methods' signatures
Date Wed, 27 Jun 2012 19:07:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402482#comment-13402482
] 

Andrew Purtell commented on HBASE-6279:
---------------------------------------

> It makes sense to extend the proto-generated code to reduce maintenance burden.

Maybe not. From https://developers.google.com/protocol-buffers/docs/cpptutorial:
{quote}
If you want to add richer behaviour to a generated class, the best way to do this is to wrap
the generated protocol buffer class in an application-specific class. ... You should never
add behaviour to the generated classes by inheriting from them. This will break internal mechanisms
and is not good object-oriented practice anyway.
{quote}

Of course this refers to the message classes, but regards protobuf's "RPC support" why not
just use the message objects and leave out the RPC bits from proto files? There is no actual
RPC implementation provided by the protobuf compiler or library, and there are classes such
as RpcController that don't make sense and are polluting the interfaces.
                
> Remove the RpcController argument from the PB methods' signatures
> -----------------------------------------------------------------
>
>                 Key: HBASE-6279
>                 URL: https://issues.apache.org/jira/browse/HBASE-6279
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Devaraj Das
>
> I don't see a reason for having the RPC methods (like HMasterInterface) define methods
with the RpcController argument (which is always passed as null during invocation). 

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