@Override
  protected void afterExecute(Runnable r, Throwable t) {
    if (poolStatHelper != null) {
      poolStatHelper.endJob();
    }
    if (threadsMonitoring != null) {
      threadsMonitoring.endMonitor();
    }
  }
This class is used for the DM's serial executor. The only thing it currently does is increment
stats.
geode-core/src/main/java/org/apache/geode/distributed/internal/SerialQueuedExecutorWithDMStats.java