CoprocessorRpcChannel channel = table.coprocessorService(ROW);
RowProcessorEndpoint.FriendsOfFriendsProcessor processor =
new RowProcessorEndpoint.FriendsOfFriendsProcessor(ROW, A);
RowProcessorService.BlockingInterface service =
RowProcessorService.newBlockingStub(channel);
RowProcessorRequest request = RowProcessorClient.getRowProcessorPB(processor);
RowProcessorResult protoResult = service.process(null, request);
FriendsOfFriendsProcessorResponse response =
FriendsOfFriendsProcessorResponse.parseFrom(protoResult.getRowProcessorResult());
Set<String> result = new HashSet<String>();
result.addAll(response.getResultList());