/// <summary>Execute an on-demand cleaner task.</summary>
protected internal virtual void RunCleanerTask()
{
Runnable task = CleanerTask.Create(conf, store, metrics, cleanerTaskLock);
// this is a non-blocking call (it simply submits the task to the executor
// queue and returns)
this.scheduledExecutor.Execute(task);
}
/// <exception cref="System.Exception"/>
protected override void ServiceStart()
{
if (!WriteGlobalCleanerPidFile())
{
throw new YarnException("The global cleaner pid file already exists! " + "It appears there is another CleanerService running in the cluster"
);
}
this.metrics = CleanerMetrics.GetInstance();
// Start dependent services (i.e. AppChecker)
base.ServiceStart();
Runnable task = CleanerTask.Create(conf, store, metrics, cleanerTaskLock);
long periodInMinutes = GetPeriod(conf);
scheduledExecutor.ScheduleAtFixedRate(task, GetInitialDelay(conf), periodInMinutes
, TimeUnit.Minutes);
Log.Info("Scheduled the shared cache cleaner task to run every " + periodInMinutes
+ " minutes.");
}