CODEWITHSUNDEEP
javaoptaplanner
ahmetesat
ahmetesat

Reputation: 73

Why OptaPlanner gives "Bailing out of neverEnding selector to avoid infinite loop." error when I used @PlanningPin?

I've red the optaplanner documentation and @PlanningPin usage is very simple. My PlanningEntity is:

@PlanningEntity()
public class CrewGroupAssignment extends AbstractPersistable {

I've used PlanningPin inside PlanningEntity like this:

@PlanningPin
private Boolean pinned = true;
   public Boolean getPinned() {
      return pinned;
   }

   public void setPinned(Boolean pinned) {
      this.pinned = pinned;
   }

If this.pinned is false there is no problem, algorithm works perfectly, however, when it is true (PlanningVariable inside this class set with a value, it is not empty) it gives error:

[FilteringEntitySelector] WARN - Bailing out of neverEnding selector (Filtering(FromSolutionEntitySelector(CrewGroupAssignment))) to avoid infinite loop.

If PlanningVariable inside this class not set with a value, then it doesn't work also. Why it gives this error for this reason?

Thanks!

Upvotes: 0

Views: 366

Answers (1)

Geoffrey De Smet
Geoffrey De Smet

Reputation: 27312

We've seen this before. It's because all your entities are pinned. There's a jira to improve OptaPlanner's behavior: it should simply end solving immediatly when starting from a dataset with no movable entities (either they are are none or the are all immovable (for example because they are pinned)).

Upvotes: 1

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