code: public Future<ScanResult> scanAsync(final ScanRequest scanRequest) 
              throws AmazonServiceException, AmazonClientException {
          return executorService.submit(new Callable<ScanResult>() {
              public ScanResult call() throws Exception {
                  return scan(scanRequest);
  		    }
  		});
      }
docs: <p>
  Retrieves one or more items and its attributes by performing a full
  scan of a table.
  </p>
  <p>
  Provide a <code>ScanFilter</code> to get more specific results.
  </p>
  
  @param scanRequest Container for the necessary parameters to execute
  the Scan operation on AmazonDynamoDB.
  
  @return A Java Future object containing the response from the Scan
  service method, as returned by AmazonDynamoDB.
  
  @throws AmazonClientException
  If any internal errors are encountered inside the client while
  attempting to make the request or handle the response.  For example
  if a network connection is not available.
  @throws AmazonServiceException
  If an error response is returned by AmazonDynamoDB indicating
  either a problem with the data in the request, or a server side issue.