hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sameer Paranjpye (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-252) add versioning to RPC
Date Wed, 31 May 2006 00:31:30 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-252?page=all ]

Sameer Paranjpye updated HADOOP-252:
------------------------------------

    Fix Version: 0.4
        Version: 0.3

> add versioning to RPC
> ---------------------
>
>          Key: HADOOP-252
>          URL: http://issues.apache.org/jira/browse/HADOOP-252
>      Project: Hadoop
>         Type: Improvement

>   Components: ipc
>     Versions: 0.3
>     Reporter: Yoram Arnon
>      Fix For: 0.4

>
> currently, any change to any rpc message breaks the protocol, with mysterious exceptions
occurring at run time.
> a versioning sceme would have two benefits:
> - intelligent error messages, indicating that an upgrade is required
> - backwards compatibility could be supported.
> the proposal is to add a "const version" for each protocol, and a method: int getVersion(int
version) that sends the client's version and receives the server's version. This would be
the first method invoked on connection. Both sides then either agree on the lowest version
number, providing backwards compatibility support, or abort the connection as "unsupported
version".

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira


Mime
View raw message