/// <summary>Remove a queue and all its descendents.</summary>
private void RemoveQueue(FSQueue queue)
{
if (queue is FSLeafQueue)
{
leafQueues.Remove(queue);
}
else
{
IList <FSQueue> childQueues = queue.GetChildQueues();
while (!childQueues.IsEmpty())
{
RemoveQueue(childQueues[0]);
}
}
Sharpen.Collections.Remove(queues, queue.GetName());
queue.GetParent().GetChildQueues().Remove(queue);
}
/// <summary>
/// Returns true if there are no applications, running or not, in the given
/// queue or any of its descendents.
/// </summary>
protected internal virtual bool IsEmpty(FSQueue queue)
{
if (queue is FSLeafQueue)
{
FSLeafQueue leafQueue = (FSLeafQueue)queue;
return(queue.GetNumRunnableApps() == 0 && leafQueue.GetNumNonRunnableApps() == 0);
}
else
{
foreach (FSQueue child in queue.GetChildQueues())
{
if (!IsEmpty(child))
{
return(false);
}
}
return(true);
}
}
/// <summary>
/// Traverses the queue hierarchy under the given queue to gather all lists
/// of non-runnable applications.
/// </summary>
private void GatherPossiblyRunnableAppLists(FSQueue queue, IList <IList <FSAppAttempt
> > appLists)
{
if (queue.GetNumRunnableApps() < scheduler.GetAllocationConfiguration().GetQueueMaxApps
(queue.GetName()))
{
if (queue is FSLeafQueue)
{
appLists.AddItem(((FSLeafQueue)queue).GetCopyOfNonRunnableAppSchedulables());
}
else
{
foreach (FSQueue child in queue.GetChildQueues())
{
GatherPossiblyRunnableAppLists(child, appLists);
}
}
}
}