On Tue, Mar 24, 2009 at 7:06 AM, Alex_ynr <suburbanc...@gmail.com> wrote: > > Hello, > > Our application uses a network bridge between 2 instances of a 5.0.0.23 > build of ActiveMQ. > > One server is on the internet and the other is on a Local network behind a > firewall. The one behind the firewall initiates the (duplex) connection to > the outside server. > > 4 different queues are set up . On 3 of those, we have the part of our app > on the intranet server publishing and these are consumed by a different part > of the app on the outside server. The other queue works the other way > around. This queue is also the "critical" one in terms of time for messages > to move from one server to the other. > > Our problem is the following. When a message is published to the outside > server and the bridge dies (network disconnection, the local network is > connected to the internet over an adsl line) before the message has reached > the other side, although the bridge reconnects instantly, the message takes > WAY too long to be consumed on the local server. > > The traffic is very small (10-20 x 2-3kb messages an hour). > > For example: > > If a message gets published at 12:00 and the disconnection occurs and by > 12:01 it is reconnected, that message might not be consumed until 12:15. > Even though other messages published AFTER the reconnection (say 12:02) will > be consumed almost instantly. > > Any ideas?
This is a complete guess at this point, but it sounds like the sockets are taking a while to timeout and reset. To look a bit deeper at the issue, while the broker is hanging, take a thread dump so that you can see exactly where the broker is hanging. The thread dumps should help to confirm it, but if this guess is correct, there were a couple of bug fixes for this issue that were included in ActiveMQ 5.1 and 5.2: https://issues.apache.org/activemq/browse/AMQ-1993 https://issues.apache.org/activemq/browse/AMQ-2006 Bruce -- perl -e 'print unpack("u30","D0G)u8...@4vyy9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*" );' Apache ActiveMQ - http://activemq.apache.org/ Apache Camel - http://camel.apache.org/ Apache ServiceMix - http://servicemix.apache.org/ Blog: http://bruceblog.org/
