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V.Narayanan commented on DERBY-3447: ------------------------------------ When I found out about Derby-3451 I was thinking why the quit without starting replication does not seem to hang. I found out that it does not hang because the other threads used in derby are Daemon threads . see BaseMonitor#getDaemonThread (line no 2080) relevant lines Thread t = new Thread(daemonGroup, task, "derby.".concat(name)); t.setDaemon(true); found "The Java Virtual Machine exits when the only threads running are all daemon threads." here http://java.sun.com/j2se/1.3/docs/api/java/lang/Thread.html#setDaemon(boolean) > Shutdown on a database without stopping replication hangs > --------------------------------------------------------- > > Key: DERBY-3447 > URL: https://issues.apache.org/jira/browse/DERBY-3447 > Project: Derby > Issue Type: Bug > Components: Replication > Affects Versions: 10.4.0.0 > Reporter: V.Narayanan > Assignee: V.Narayanan > Attachments: Derby3447_v1.diff, Derby3447_v1.stat, Derby3447_v2.diff, > Derby3447_v2.stat > > -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.