Message Title

Thanks for the quick response. We have tried using Integer.MAX_VALUE and also Integer.MAX_VALUE - 100, but it did not work out. Both values led to an exception inside the Lucene implementation, where an Object array of size maxFacetCount+1 is created.

java.lang.NegativeArraySizeException
	at org.apache.lucene.util.PriorityQueue.<init>(PriorityQueue.java:58)
	at org.apache.lucene.facet.TopOrdAndIntQueue.<init>(TopOrdAndIntQueue.java:42)
	at org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetCounts.getDim(SortedSetDocValuesFacetCounts.java:121)
	at org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetCounts.getTopChildren(SortedSetDocValuesFacetCounts.java:93)
	at org.hibernate.search.query.engine.impl.QueryHits.updateStringFacets(QueryHits.java:424)
	at org.hibernate.search.query.engine.impl.QueryHits.updateFacets(QueryHits.java:280)
	at org.hibernate.search.query.engine.impl.QueryHits.updateTopDocs(QueryHits.java:265)
	at org.hibernate.search.query.engine.impl.QueryHits.<init>(QueryHits.java:145)
	at org.hibernate.search.query.engine.impl.QueryHits.<init>(QueryHits.java:114)
	at org.hibernate.search.query.engine.impl.HSQueryImpl.getQueryHits(HSQueryImpl.java:453)
	at org.hibernate.search.query.engine.impl.HSQueryImpl.queryDocumentExtractor(HSQueryImpl.java:326)
	at org.hibernate.search.query.engine.impl.FacetManagerImpl.getFacets(FacetManagerImpl.java:97)

java.lang.OutOfMemoryError: Java heap space

	at org.apache.lucene.util.PriorityQueue.<init>(PriorityQueue.java:58)
	at org.apache.lucene.facet.TopOrdAndIntQueue.<init>(TopOrdAndIntQueue.java:42)
	at org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetCounts.getDim(SortedSetDocValuesFacetCounts.java:121)
	at org.apache.lucene.facet.sortedset.SortedSetDocValuesFacetCounts.getTopChildren(SortedSetDocValuesFacetCounts.java:93)
	at org.hibernate.search.query.engine.impl.QueryHits.updateStringFacets(QueryHits.java:424)
	at org.hibernate.search.query.engine.impl.QueryHits.updateFacets(QueryHits.java:280)
	at org.hibernate.search.query.engine.impl.QueryHits.updateTopDocs(QueryHits.java:265)
	at org.hibernate.search.query.engine.impl.QueryHits.<init>(QueryHits.java:145)
	at org.hibernate.search.query.engine.impl.QueryHits.<init>(QueryHits.java:114)
	at org.hibernate.search.query.engine.impl.HSQueryImpl.getQueryHits(HSQueryImpl.java:453)
	at org.hibernate.search.query.engine.impl.HSQueryImpl.queryDocumentExtractor(HSQueryImpl.java:326)
	at org.hibernate.search.query.engine.impl.FacetManagerImpl.getFacets(FacetManagerImpl.java:97)

Finally we decided to introduce a customer-specific property for maxFacetCount and set it to 1.000.000 by default.