final long nonceGroup = ng.getNonceGroup(), nonce = ng.newNonce();
RegionServerCallable<Long> callable =
new RegionServerCallable<Long>(connection, getName(), row) {
public Long call() throws IOException {
try {
MutateRequest request = RequestConverter.buildIncrementRequest(
getLocation().getRegionInfo().getRegionName(), row, family,
qualifier, amount, durability, nonceGroup, nonce);
PayloadCarryingRpcController rpcController = rpcControllerFactory.newController();
rpcController.setPriority(getTableName());
MutateResponse response = getStub().mutate(rpcController, request);