private static STT.Task ExecuteCentralizedActivityAsync(IndexingActivityBase activity, CancellationToken cancellationToken)
{
SnTrace.Index.Write("ExecuteCentralizedActivity: #{0}", activity.Id);
CentralizedIndexingActivityQueue.ExecuteActivity(activity);
return(activity.WaitForCompleteAsync(cancellationToken));
}
private static async STT.Task ExecuteDistributedActivityAsync(IndexingActivityBase activity, CancellationToken cancellationToken)
{
SnTrace.Index.Write("ExecuteDistributedActivity: #{0}", activity.Id);
await activity.DistributeAsync(cancellationToken).ConfigureAwait(false);
// If there are too many activities in the queue, we have to drop at least the inner
// data of the activity to prevent memory overflow. We still have to wait for the
// activity to finish, but the inner data can (and will) be loaded from the db when
// the time comes for this activity to be executed.
if (DistributedIndexingActivityQueue.IsOverloaded())
{
SnTrace.Index.Write("IAQ OVERLOAD drop activity FromPopulator A:" + activity.Id);
activity.IndexDocumentData = null;
}
// all activities must be executed through the activity queue's API
DistributedIndexingActivityQueue.ExecuteActivity(activity);
await activity.WaitForCompleteAsync(cancellationToken).ConfigureAwait(false);
}