title: Rejected Execution Exception
body: <p>I get this error in the log file while thread is running, i don't know where this error occurs since the threads didn't stop and process data with no issues and only my problem that this error appears multiple times in the log file</p>
  
  <blockquote>
    <p>java.util.concurrent.RejectedExecutionException: Task
    java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@419a9977
    rejected from
    java.util.concurrent.ScheduledThreadPoolExecutor@2522cdb9[Terminated,
    pool size = 0, active threads = 0, queued tasks = 0, completed tasks =
    2123929]</p>
  </blockquote>
  
  <p>I did some research, i found that in some places i shutdown the task, but that did not happen at all.</p>