code: public void recordTimeout(String trackerName) {
      synchronized (this) {
        NodeUsageReport usageReport = getReportUnprotected(trackerName);
        usageReport.setNumTimeout(usageReport.getNumTimeout() + 1);
      }
    }
docs: Increment the number of timeouts (expired launch) on a tracker.
  @param trackerName The name of the tracker.