// track outstanding responses so 10k can be out at a time
final AtomicInteger outstanding = new AtomicInteger(0);
final AtomicLong deleteCount = new AtomicLong(0);
ProcedureCallback callback = new ProcedureCallback() {
@Override
public void clientCallback(ClientResponse clientResponse) throws Exception {
outstanding.decrementAndGet();
if (clientResponse.getStatus() != ClientResponse.SUCCESS) {
System.out.println("Error in deleter callback:");