testCoGrouper.getParameters().setString(PactCompiler.HINT_LOCAL_STRATEGY,
config.getString("CoGroupTest#LocalStrategy", ""));
testCoGrouper.getParameters().setString(PactCompiler.HINT_SHIP_STRATEGY,
config.getString("CoGroupTest#ShipStrategy", ""));
FileDataSink output = new FileDataSink(new CoGroupOutFormat(), resultPath);
output.setDegreeOfParallelism(1);
output.setInput(testCoGrouper);
testCoGrouper.setFirstInput(input_left);
testCoGrouper.setSecondInput(input_right);
return new Plan(output);
}