Hi, I have created a JIRA on MINA : https://issues.apache.org/jira/browse/DIRMINA-682
I'm currently trying to see what happens if we use a simpleExecutorFilter() instead of the same object with some OrdederThreadPoolExecutor. I'm currently running integration tests. I'm afraid that it kills scalability, but at least, I have checked that it returns messages one by one.
Andrea Gariboldi wrote:
Hi Martin, Emmanuel found that there is a threading design problem within MINA: The IoProcessor that is handling the search request and putting the encoded results in the WriteQueue, is the same that should dequeue those results from the queue and send it. So once it has finished with the request processing it checks for things to write and write all the results in the queue, but if you have long searches you will most likely get an OOM exception, because of the growing queue. Andrea 2009/4/3 Martin Alderson <[email protected]>Hi Andrea, Just to let you know, this looks to be the same problem that is being discussed in my OutOfMemoryError thread on the users mailing list. It still seems to be happening in the latest ApacheDS trunk. I don't really understand why it is happening yet though. Martin Andrea Gariboldi wrote:Hi guys, i was testing the oracle partition and it looks like the mina filter chain buffers the search results until the search ends and then starts message encoding end sending... Is this a protocol constraint or a bug? (org.apache.directory.server.ldap.handlers.SearchHandler : 326 snippet: while ( (count < sizeLimit ) && cursor.next() ) { if ( session.getIoSession().isClosing() ) { break; } ClonedServerEntry entry = cursor.get(); session.getIoSession().write( generateResponse( session, req, entry ) ); // here the message is "writed" trought mina filters, but is not encoded until the end of this loop... count++; } ) Doing a long search (1000+ entries) results in long waits for the first result on the client and java heap consumption. am i missing something? Andrea
-- -- cordialement, regards, Emmanuel Lécharny www.iktek.com directory.apache.org
