int shardCount = 1;
MapReduceSpecification.Builder builder = new MapReduceSpecification.Builder();
builder.setJobName("Create MapReduce entities");
builder.setInput(new ConsecutiveLongInput(0, payloads.size() * (long) shardCount, shardCount));
builder.setMapper(new EntityCreator("MapReduceTest", payloads));
builder.setKeyMarshaller(Marshallers.getVoidMarshaller());
builder.setValueMarshaller(Marshallers.getVoidMarshaller());
builder.setReducer(NoReducer.create());
builder.setOutput(new NoOutput());