@Override
public void run() {
JobTracker jobTracker = hazelcastInstance.getJobTracker(HazelcastTestSupport.randomString());
Job<Integer, Integer> job = jobTracker.newJob(KeyValueSource.fromMap(map));
JobCompletableFuture<Map<String, BigInteger>> future = job.chunkSize(0).mapper(new GroupingTestMapper())
.combiner(new ObjectCombinerFactory())
.reducer(new ObjectReducerFactory()).submit();
try {
Map<String, BigInteger> result = future.get();