Method close

src/Scanner.java:893–898

Closes this scanner (don't forget to call this when you're done with it!). Closing a scanner already closed has no effect. The deferred returned will be called back immediately. @return A deferred object that indicates the completion of the request. The Object has not special meaning an

()

   * The {@link Object} has not special meaning and can be {@code null}.
   */
  public Deferred<Object> close() {
    if (region == null || region == DONE) {
      return Deferred.fromResult(null);
    }
    return client.closeScanner(this).addBoth(closedCallback());
  }

  /** Callback+Errback invoked when the RegionServer closed our scanner.  */
  private Callback<Object, Object> closedCallback() {