RPC should send a fixed header and version at the start of connection
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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
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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