for (Map.Entry<Object, Integer> entry : data.entrySet()) {
int part = aff.partition(entry.getKey());
UUID exp = nodes.get(entry.getValue()).id();
UUID act = F.first(aff.nodes(part, nodes, 1)).id();
if (!exp.equals(act)) {
ok = false;
info("Failed to validate affinity for key '" + entry.getKey() + "' [expected=" + exp +