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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7533) Write an RPC Specification for 0.96
Date Thu, 17 Jan 2013 22:54:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556694#comment-13556694

stack commented on HBASE-7533:

[~enis] Yeah.  Looks like Elliott's scratches but rather than a factory you'd just drop the
bytes into the Constructor and let the class make sense of it.  That'd work.

But I'd suggest we do not need a generically extensible system that allows adding new payload-bearing
exception types (see above where we would want to discourage control via exception).

Reading through RegionServer exceptions I see one exception that takes payload, RegionServerMoved,
so let us just explicitly handle this type beyond the base 'String' type we already have in

Do you lot think there could be more?  It would have to be exceptions that were not method
specific because for these types then we should suggest the method response include the exception
as an optional response.  So that leaves exceptions that could come out of multiple methods
or problems the server encounters while running.

Chatting w/ Elliott, the base 'String' Exception type is already extensible being a protobuf
so we could add extra info therein that the client exception classes could interpret if able
such as how long to hold before retrying (a pushback).

Can you lads think of any others?

I'd think that we'd try and keep the spec as narrow as possible (and no narrower) so if we
could do without having an extensible fancy payload bearing exception types system, lets punt.
> Write an RPC Specification for 0.96
> -----------------------------------
>                 Key: HBASE-7533
>                 URL: https://issues.apache.org/jira/browse/HBASE-7533
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>             Fix For: 0.96.0
>         Attachments: 7533_proto_sketch.txt, rpc_spec.txt
> RPC format is changing for 0.96 to accomodate our protobufing all around.  Here is a
first cut.  Please shred: https://docs.google.com/document/d/1-1RJMLXzYldmHgKP7M7ynK6euRpucD03fZ603DlZfGI/edit

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