[jboss-jira] [JBoss JIRA] Commented: (JGRP-1179) Incoming PingRsp is ignored despite being sent by a Coordinator.

Incoming PingRsp is ignored despite being sent by a Coordinator. ---------------------------------------------------------------- Key: JGRP-1179 URL: https://jira.jboss.org/jira/browse/JGRP-1179 Project: JGroups Issue Type: Bug Affects Versions: 2.6.9, 2.6.14 Environment: Linux Red Hat Enterprise 5.0 kernel 2.6.18-8.el5 java 1.6.0_18 Reporter: Renaud Devarieux Assignee: Bela Ban Fix For: 2.10 I launch successively (nearly simultaneously) 5 nodes A B C D E using the same protocol stack and one channel to communicate between themselves. UDP(mcast_addr=231.8.8.8;mcast_port=45578):PING(num_initial_members=4):MERGE2:FD:VERIFY_SUSPECT:pbcast.NAKACK:pbcast.STABLE:FRAG2:pbcast.GMS(shun=true):pbcast.FLUSH Often as not, it depends on the speed/rythm between each node launch, I get 2 views, ie {D} and {A B C E}. Merge occurs later but when it does it's a bit late for my application and I don't think I should have to handle one save in case of a real electric/network failure. I noticed that on D I was timing out (3000ms) on during the discovery process despite having received the 4 GET_MBRS_RSP of the other nodes. Then D would decide there was no coordinator outside and become coordinator itself. What seems to happen is D sends two GET_MBRS_REQ and A replies to both, but at the time of the first reply, A is not yet coordinator and when D receives the second response, A became coordinator but D ignores the response and doesn"t add it to its list of Responses. I have written a workaround in Discovery.Responses method addResponse, it seems to work for my case but I am afraid it would break something else I am not aware of. public void addResponse(PingRsp rsp) { if(rsp == null) return; promise.getLock().lock(); try { //Workaround 29/03/2010 int index = ping_rsps.indexOf(rsp); // equivalent to does not contain. if (index == -1) { ping_rsps.add(rsp); promise.getCond().signalAll(); } else if (rsp.isCoord()) { PingRsp pr = ping_rsps.get(index); //Check if the already existing element is not server if (!pr.isCoord()) { ping_rsps.set(index, rsp); promise.getCond().signalAll(); } } /*if(!ping_rsps.contains(rsp)) { ping_rsps.add(rsp); promise.getCond().signalAll(); }*/ // Old JGroups code } finally { promise.getLock().unlock(); } } Regards Renaud