[
https://issues.apache.org/jira/browse/HADOOP-9151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543642#comment-13543642
]
Todd Lipcon commented on HADOOP-9151:
-------------------------------------
Hi Sanjay. I mentioned CDH out of transparency, but I think it's beneficial for
Hadoop 2.0.x and 2.1.x to remain wire-compatible with 2.0.2 and earlier, if
possible. Even outside of CDH, people are using 2.0.x, and we should try to
make their lives easier, unless we have a substantial reasoning to break
compatibility.
As for your question: no, you'd need a client side change in order to be able
to interpret the earlier version responses. Certainly we could make a change in
CDH which would allow the next version of CDH to be compatible both with Hadoop
2.0.3+ clients and also 2.0.2 (by switching on the IPC version that the client
connects with). But, as a community contributor, I think we should strive to
maintain wire compatibility between Apache Hadoop versions unless we've got a
good reason to break it, vendor distributions aside.
> Include RPC error info in RpcResponseHeader instead of sending it separately
> ----------------------------------------------------------------------------
>
> Key: HADOOP-9151
> URL: https://issues.apache.org/jira/browse/HADOOP-9151
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Sanjay Radia
> Assignee: Sanjay Radia
> Attachments: HADOOP-9151.patch
>
>
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
