import java.util.HashMap;
import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Set;
import java.util.concurrent.atomic.AtomicLong;
-import java.util.concurrent.atomic.AtomicReference;
-import java.util.function.BinaryOperator;
import org.openecomp.policy.xacml.util.MetricsUtil.AvgLatency;
import org.openecomp.policy.xacml.util.MetricsUtil.MaxLatency;