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If both scale-down and cluster-connection are using the same JGroups discovery-group then when the cluster-connection stops it will close the underlying org.jgroups.JChannel and when the scale-down process tries to use it to find a server it will fail. This commit ensures that the JGroupsBroadcastEndpoint implementation of BroadcastEndpoint#openClient initializes the channel if it has been closed.
Welcome to Apache ActiveMQ Artemis
ActiveMQ Artemis is the next generation message broker from Apache ActiveMQ.
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