iteration.setInput(pageWithRankInput);
FileDataSource adjacencyListInput = new FileDataSource(new ImprovedAdjacencyListInputFormat(),
adjacencyListInputPath, "AdjancencyListInput");
JoinOperator join = JoinOperator.builder(new DotProductMatch(), LongValue.class, 0, 0)
.input1(iteration.getPartialSolution())
.input2(adjacencyListInput)
.name("Join with Edges")
.build();