java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@a62c5ad3[Not completed, task = java.util.concurrent.Executors$RunnableAdapter@ec2898dd[Wrapped task = com.hazelcast.client.impl.connection.tcp.TcpClientConnectionManager$ConnectToAllClusterMembersTask@b3f72078]], because client is shutting down...