public void start(long startKey, long endKey, int numThreads) throws IOException {
    this.startKey = startKey;
    this.endKey = endKey;
    this.numThreads = numThreads;
    (new Thread(new ProgressReporter(actionLetter),
      "MultiThreadedAction-ProgressReporter-" + EnvironmentEdgeManager.currentTime())).start();
  }
Whether we need to print out Hadoop Streaming-style counters
hbase-diagnostics/src/main/java/org/apache/hadoop/hbase/util/MultiThreadedAction.java