presto-main/src/main/java/io/prestosql/execution/scheduler/TopologyAwareNodeSelector.java/TopologyAwareNodeSelector/selectRandomNodes
class TopologyAwareNodeSelector:    @Override
    public List<InternalNode> selectRandomNodes(int limit, Set<InternalNode> excludedNodes)
    {
        return selectNodes(limit, randomizedNodes(nodeMap.get().get(), includeCoordinator, excludedNodes));
    }