[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-1283: -------------------------------- #1 You use TCP_NIO which is not supported. I switched to TCP in the attached new code #2 You're using SIGSTOP, *not* SIGHALT to pause a process. Is this an oversight ? #3 Your config didn't include any flow control protocols. I modified it The changed ZIP file is attached. You'll have to change the path /home/bela/tcp-nio.xml to your config file. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-1283: -------------------------------- The resulting outcome is as follows: when you pause a process, everybody else will block (on waiting for credits from the paused child process in MFC), then the child will be removed from the cluster view and everybody resumes sending messages. When the child process is resumed, it'll join the cluster again (as a merge) and you'll see a new view. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-1283: -------------------------------- 1. Yes, MPING is a supported protocol 3. Yes. I made the change in Git (master), including MFC/UFC/FRAG2/STATE_TRANSFER What do you mean by periods of instability ? Merging ? No, an application developer should *not* have to write any throttling code; flow control should block everyone from sending until the member in question is removed from the view. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-1283: -------------------------------- Ronald, we should discuss questions of conceptual nature on the dev or users mailing list, as others will benefit, too... Yes, group communication is hampered by unresponsive members. For example: stability (STABLE) will accumulate messages, as its not able to reach consensus among its members because there's no response from the GC'ed member. Ditto for flow control. 10 seconds of GC is not an issue. However, you should strive for more, and smaller, GCs. In general, failure detection limits the amount of time an unresponsive member can hamper the rest of the cluster. After the timeout elapses, an unresponsive member is kicked out of the cluster and communication continues. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] ronald yang updated JGRP-1283: ------------------------------ Attachment: oome.tgz -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban updated JGRP-1283: --------------------------- Attachment: Follower.java Leader.java -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-1283: -------------------------------- Need to check if FC is subject to the same issue -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira

[ https://issues.jboss.org/browse/JGRP-1283?page=com.atlassian.jira.plugin.... ] Bela Ban updated JGRP-1283: --------------------------- Summary: MFC: OOME due to credits being out of sync (was: reproducing outofmemoryerror) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira