[ http://issues.apache.org/jira/browse/HADOOP-677?page=all ]
Doug Cutting updated HADOOP-677:
--------------------------------
Status: Resolved (was: Patch Available)
Resolution: Fixed
I just committed this. Thanks, Owen!
> RPC should send a fixed header and version at the start of connection
> ---------------------------------------------------------------------
>
> Key: HADOOP-677
> URL: http://issues.apache.org/jira/browse/HADOOP-677
> Project: Hadoop
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.7.2
> Reporter: Owen O'Malley
> Assigned To: Owen O'Malley
> Fix For: 0.9.0
>
> Attachments: rpc-header.patch
>
>
> There have been problems with http clients connecting to the RPC servers,
> which causes the RPC to try and allocate huge buffers and get
> OutOfMemoryExceptions. I want to have a fixed prefix that is sent first that
> identifies it as an RPC client. To make the system compatible as much as
> possible, I'd make the servers accept both forms for a Hadoop release and
> then change the clients to send the prefix, and finally make the servers only
> accept the new form.
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