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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-677) RPC should send a fixed header and version at the start of connection
Date Thu, 02 Nov 2006 23:44:17 GMT
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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