// Instantiate tracer
Tracer tracer = ...

// Register tracer with GlobalTracer:
GlobalTracer.register(tracer);

// Decorate HazelcastInstance with Tracing HazelcastInstance:
HazelcastInstance hazelcast = new TracingHazelcastInstance(Hazelcast.newHazelcastInstance(config), 
                                                           false);

// Get Map: 
ConcurrentMap<String, String> map = hazelcast.getMap("distributed-map");
map.put("key", "value");