Add tracing of sorting degradation

1 files changed, 2 insertions, 0 deletions

diff --git a/container-search/src/main/java/com/yahoo/search/querytransform/SortingDegrader.java b/container-search/src/main/java/com/yahoo/search/querytransform/SortingDegrader.java
index 0c7871eb6e6..2597e440d17 100644
--- a/container-search/src/main/java/com/yahoo/search/querytransform/SortingDegrader.java
+++ b/container-search/src/main/java/com/yahoo/search/querytransform/SortingDegrader.java
@@ -69,6 +69,8 @@ public class SortingDegrader extends Searcher {
     }
 
     private void setDegradation(Query query) {
+        query.trace("Using sorting degrading for performance - totalHits will be wrong. " + 
+                    "Turn off with sorting.degrading=false.", 2);
         Sorting.FieldOrder primarySort = query.getRanking().getSorting().fieldOrders().get(0); // ensured above
         MatchPhase matchPhase = query.getRanking().getMatchPhase();