@Override public void process(VertexInducedEmbedding embedding) { if (embedding.getNumVertices() == 3) { IntArrayList vertices = embedding.getVertices(); for (int i = 0; i < 3; ++i) { reusableIdWritable.set(vertices.getUnchecked(i)); map(AGG_OUTPUT, reusableIdWritable, unitLongWritable); } } }