Does the shutdown of the broker complete cleanly in both cases? A slow shutdown will lead to the shutdown script using kill -9, which eliminates any possibility of the process continuing to ensure a clean shutdown. In that case, the contents of the file may be left in a dirty state, which may lead to recovery when the broker starts up.
Also, in the "Stop master then stop second master" scenario, is the second master (B) completely stopped before restarting the first master (A)? One way to help track this down - take periodic stack dumps (jstack is good for this) during the startup (perhaps one every 15 seconds), and look at the stack trace of the main broker startup thread. That should help determine the cause. -- View this message in context: http://activemq.2283324.n4.nabble.com/Failover-very-slow-with-kahadb-while-restart-of-master-is-fast-tp4707500p4708777.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
