[jboss-jira] [JBoss JIRA] Commented: (JGRP-1090) Many retransmissions with message bundling and OOB messages

Many retransmissions with message bundling and OOB messages ----------------------------------------------------------- Key: JGRP-1090 URL: https://jira.jboss.org/jira/browse/JGRP-1090 Project: JGroups Issue Type: Task Reporter: Bela Ban Assignee: Bela Ban Fix For: 2.9 When message bundling is enabled, we queue *regular* messages until max_bundle_size has been reached or max_bundle_timeout has exceeded. The problem is that - when sending OOB (as opposed to regular) messages - they're *not* queued. This means the OOB message is possibly received *before* the regular messages and thus causes retransmission ! E.g. we send regular message 1-10, then OOB message 11. Say 1-3 are sent immediately (because the bundle timeout kicked in or the size was exceeded). Messages 4-10 are queued and sent later. Message 11 is sent immediately. On the receiver side, message reception could be for example: 1-3, 11, 4-10 When OOB message 11 is received, the receiver asks for retransmission of messages 4-10 ! This is not incorrect, but causes a lot of unneeded retransmissions ! public static void main(String[] args) throws Exception { JChannel c1=new JChannel("/home/bela/fast.xml"); c1.connect("bla3"); JChannel c2=new JChannel("/home/bela/fast.xml"); c2.connect("bla3"); for(int i=1; i <= 20; i++) { c1.send(null, null, "hello-" + i); } Message oob_msg=new Message(null, null, "oob msg"); oob_msg.setFlag(Message.OOB); c1.send(oob_msg); Util.sleep(20000); Util.close(c2, c1); }