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From Ben Craig <ben.cr...@ni.com>
Subject Re: Question about Multithreaded Thrift Servers
Date Fri, 05 Apr 2013 19:55:53 GMT
The threaded server uses one thread per connection.  It does not get a 
request, and have an available thread process the request.  This means 
that if you send 20 requests, and the 10th request takes a long time to 
process, the last ten requests will be stalled.



From:   "Napolitano, Diane" <dnapolitano@ets.org>
To:     "user@thrift.apache.org" <user@thrift.apache.org>, 
Date:   04/05/2013 02:44 PM
Subject:        Question about Multithreaded Thrift Servers



Hello, I have a Thrift server (just "NameOfServer" here) written in Java 
which is initialized with the following inside of an inner class called 
ServerThread:

TThreadPoolServer.Args args = new TThreadPoolServer.Args(serverTransport);
args.maxWorkerThreads(10);
args.processor(processor);
TServer server = new TThreadPoolServer(args);
server.serve();

Then NameOfServer has two objects:
public static NameOfServerHandler handler;
public static NameOfServer.Processor processor;

And then a ServerThread object is created in my server's main:
handler = new NameOfServerHandler();
processor = new NameOfServer.Processor(handler);
Runnable r = new ServerThread(processor, portNum);
new Thread(r).start();

My question is: am I doing this right?  Because when I send more than ten 
requests to the server, it throws an exception and dies, and all requests 
beyond the first 10 are stalled.  Unless I'm misunderstanding threads, 
Java, and everything else, aren't these additional requests supposed to be 
queued and then served when one of the 10 threads becomes available?

If you need more code/context than this, definitely let me know.

Thanks,
Diane


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