I found that when I set jboss.mod_cluster.proxyList to include 2 elements, and the 2nd element is not reachable, the mod-cluster subsystem takes a long time to start. How to reproduce: set jboss.mod_cluster.proxyList (either in the XML file, or via system prop) to "http1.dyndns.org:8000,http2.dyndns.org:8000" Currently http2.dyndns.org resolves to 192.168.1.5. If we cannot connect to such an interface, the socket connection blocks. I suspect, the following is done (in pseudo code) in mod-cluster (Java side): for(Host host: hosts) { Socket sock=new Socket(host, port); } However, this can block up to N minutes (depending on OS), I'd suggest the following code: int CONNECT_TIMEOUT=1000; // try to connect, but only wait for 1 sec Socket sock=new Socket(); try { sock.connect(new InetSocketAddress(hostname, port), CONNECT_TIMEOUT); } catch(SocketTimeoutException ex) { // skip hostname } WDYT ?

Great, thx, did you see the JIRA issue I opened ? Paul Ferraro wrote: > Good point. This actually has a couple ramifications: > 1. Can delay AS startup > 2. Can tie up jbossweb background processing thread > > This is something I can quickly fix for 1.1.0.CR2. > > On Mon, 2010-05-10 at 16:26 +0200, Bela Ban wrote: > >> I found that when I set jboss.mod_cluster.proxyList to include 2 >> elements, and the 2nd element is not reachable, the mod-cluster >> subsystem takes a long time to start. >> >> How to reproduce: >> >> >> set jboss.mod_cluster.proxyList (either in the XML file, or via system >> prop) to "http1.dyndns.org:8000,http2.dyndns.org:8000" >> >> Currently http2.dyndns.org resolves to 192.168.1.5. If we cannot connect >> to such an interface, the socket connection blocks. >> >> I suspect, the following is done (in pseudo code) in mod-cluster (Java >> side): >> >> for(Host host: hosts) { >> Socket sock=new Socket(host, port); >> } >> >> >> However, this can block up to N minutes (depending on OS), I'd suggest >> the following code: >> >> int CONNECT_TIMEOUT=1000; // try to connect, but only wait for 1 sec >> Socket sock=new Socket(); >> >> try { >> sock.connect(new InetSocketAddress(hostname, port), CONNECT_TIMEOUT); >> } >> catch(SocketTimeoutException ex) { >> // skip hostname >> } >> >> >> WDYT ? >> >> > > > >