public static String printDistributed(SubPlan plan) {
List<PlanFragment> fragments = plan.getAllFragments();
Map<PlanFragmentId, PlanFragment> fragmentsById =
Maps.uniqueIndex(fragments, PlanFragment.idGetter());
PlanNodeIdGenerator idGenerator = new PlanNodeIdGenerator();
StringBuilder output = new StringBuilder();
output.append("digraph distributed_plan {\n");
printSubPlan(plan, fragmentsById, idGenerator, output);
output.append("}\n");
return output.toString();
}
