public CountDownLatch broadcastOperation(final BroadcastOpFactory of,
Collection<MemcachedNode> nodes) {
final CountDownLatch latch=new CountDownLatch(locator.getAll().size());
for(MemcachedNode node : nodes) {
Operation op = of.newOp(node, latch);
op.initialize();
node.addOp(op);
op.setHandlingNode(node);
addedQueue.offer(node);
}
Selector s=selector.wakeup();