java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@52b98e83[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@ffff86d[Wrapped task = com.hazelcast.client.impl.connection.tcp.TcpClientConnectionManager$ConnectToAllClusterMembersTask@10df520]], because client is shutting down...