private final static void submitAlbumTasks() 
			 throws MasterException {
			
		try {
			
			//submit tasks to do.
			//Waiting until all tasks are done
			MasterMetadata.albumES.invokeAll(MasterMetadata.albumTasks); 

			//Clean the queue
			MasterMetadata.albumTasks.clear(); 
		
		} catch (Exception e) {
			throw new MasterException("Exception "+e.getMessage(), e);
		}
	}