Hi
We're using 5 modules in our Google App Engine application and  all modules 
uses auto scaling but only 1 of the modules have a background threading 
function so its using basic scaling with the following configuration:

  <basic-scaling>

    <max-instances>2</max-instances>

    <idle-timeout>2m</idle-timeout>

  </basic-scaling>


As you see instance should be closed in 2 minutes, if it doesnt receive any 
request. However if we use the below code block it works like 30 minutes 
without shutting down. When we remove the code its shutting down in 2 
minutes as it should be. (This is a test code that we are trying to 
understand the reason)


  private void doPolling() {

 

    //Queue notificationQueue = 
QueueFactory.getQueue("notification-delivery"); 
    //PushNotificationWorker worker = new 
PushNotificationWorker(notificationQueue); 

    while (!LifecycleManager.getInstance().isShuttingDown()) { 

      boolean tasksProcessed = false;  

      ApiProxy.flushLogs(); 


 

      if (!tasksProcessed) { 

        // Wait before trying to lease tasks again. 

        try { 

          Thread.sleep(MILLISECONDS_TO_WAIT_WHEN_NO_TASKS_LEASED); 

        } catch (InterruptedException e) { 

          return; 

        } 

      } 

    } 


 

    log.info("Instance is shutting down"); 

  }



Do you know how can we solve that

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  • [google-appengine]... Tolga Tanrıverdi

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