How to use

configureScanner

method

in

io.fluo.core.impl.Notification

 @Override
 public void waitForObservers() {
  try {
   Scanner scanner = env.getConnector().createScanner(env.getTable(), env.getAuthorizations());
   Notification.configureScanner(scanner);

   while (isProcessing(scanner)) {
    Thread.sleep(100);
   }

  } catch (Exception e) {
   throw new RuntimeException(e);
  }
 }
}

@VisibleForTesting
public long countNotifications(Environment env) {
 Scanner scanner = null;
 try {
  scanner = env.getConnector().createScanner(env.getTable(), env.getAuthorizations());
 } catch (TableNotFoundException e) {
  log.error("An exception was thrown -", e);
  throw new FluoException(e);
 }
 Notification.configureScanner(scanner);
 long count = 0;
 for (Iterator<Map.Entry<Key, Value>> iterator = scanner.iterator(); iterator.hasNext(); iterator
   .next()) {
  count++;
 }
 return count;
}

private int scan(ModulusParams lmp, Range range) throws TableNotFoundException {
 Scanner scanner = env.getConnector().createScanner(env.getTable(), env.getAuthorizations());
 scanner.setRange(range);
 Notification.configureScanner(scanner);
 IteratorSetting iterCfg = new IteratorSetting(30, "nhf", NotificationHashFilter.class);
 NotificationHashFilter.setModulusParams(iterCfg, lmp.divisor, lmp.remainder);
 scanner.addScanIterator(iterCfg);
 int count = 0;
 for (Entry<Key, Value> entry : scanner) {
  if (lmp.update != hwf.getModulusParams().update) {
   throw new HashNotificationFinder.ModParamsChangedException();
  }
  if (stopped.get()) {
   return count;
  }
  if (hwf.getWorkerQueue().addNotification(hwf, Notification.from(entry.getKey()))) {
   count++;
  }
 }
 return count;
}