Configuration conf = new Configuration();
Step0JobTest.setMaxSplitSize(conf, dataPath, NUM_MAPS);
// prepare a custom TreeBuilder that will classify each
// instance with its own label (in this case its index in the dataset)
TreeBuilder treeBuilder = new MockTreeBuilder();
// disable the second step because we can test without it
// and we won't be able to serialize the MockNode
PartialBuilder.setStep2(conf, false);
long seed = 1L;