final List<Pair<String,String>> keyMessages = new ArrayList<>();
Thread.sleep(bufferMS);
try (CloseableIterator<Pair<String,String>> data =
new ConsumeData(UPDATE_TOPIC, zkPort).iterator();
BatchLayer<?,?,?> batchLayer = new BatchLayer<>(config)) {
log.info("Starting consumer thread");
new Thread(new LoggingRunnable() {
@Override