[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-1245) Message delivery freezes with default values of prefetchSize and slowConsumers

[ http://jira.jboss.com/jira/browse/JBMESSAGING-1245?page=comments#action_1... ] Tim Fox commented on JBMESSAGING-1245: -------------------------------------- By inspection of the code I believe I can potential for a race condition which could cause the observed problem. In ServerConsumerEndpoint::handle() if (sendCount == num) { //if change rate gets set to zero here then would get stuck!! **** clientAccepting = false; firstTime = false; } If a call to changeRate() comes in at line ****, then it is possible that sendCount gets set to zero, and clientAccepting remains false, which would cause consumers to become stuck Workarounds for now woud be to set prefetchSize to a very large value so that TCP flow control takes effect - although this may not be ideal. Proper fix is to make sure those actions are properly synchronized. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira