Hi all, In my domain there is a cluster of 2 brokers and several CMS clients. The failover protocol works very well when i switch off ActiveMQ on one of the brokers, but not *when I unplug the network cable* from the server. In this case, it takes about 10 seconds to switch to the other node, whereas I need the client switches in 1-2 seconds. I have also configured the inactivity monitor set to 1 second, but the 10 seconds delay in the switching persists. Now this is my uri:
failover://(tcp://BROKER1:61616,tcp://BROKER2:61616)?randomize=false""&wireFormat.maxInactivityDuration=1000&wireFormat.maxInactivityDurationInitalDelay=1000 After several tests, I believe to have understood the reason the delay in the switching on the other server. Once the cable is disconnected, the inactivity monitor detects the disconnection after 1 second and the client tries to close the socket; however the server can't answer and the socket remains in *FIN_WAIT_1* status for about ten seconds. After the socket is finally closed and the client switches to the other broker. Based on my tests, no one of the available options of the CMS library can force the client to close immediately the socket. The only option useful seems to be *backup=true*, which requires the client to establish a connection for each broker of the cluster. Adding this option, the connection is successful and I can see both sockets established; the first one is used for exchanging the messages, while the other one only for keepAliveInfo messages as required by the inactivity monitor. When I unplug the cable from the first broker, the client looses forever the connection for the most part of the times. When rarely it works, the switching is very fast as I want. Therefore I'm confident this is the right option for my needs, but it seems affected by a bug. Have you ever experienced the *backup=true* option for failover transport? Any issue reported about this option? Thank you in advance for your help. -- View this message in context: http://activemq.2283324.n4.nabble.com/Backup-option-not-working-in-CMS-tp4716711.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
