Clear renderer hit groups

This allows us to stream more data than can fit in the container
(across all concurrent queries), as rendered hits in completed groups
can now be garbage collected.

We can not deference the hit groups themselves as that entails modifying
the parent list.

1 files changed, 1 insertions, 0 deletions

diff --git a/container-core/src/main/java/com/yahoo/processing/rendering/AsynchronousSectionedRenderer.java b/container-core/src/main/java/com/yahoo/processing/rendering/AsynchronousSectionedRenderer.java
index eeb02f768f4..6e1d2627c22 100644
--- a/container-core/src/main/java/com/yahoo/processing/rendering/AsynchronousSectionedRenderer.java
+++ b/container-core/src/main/java/com/yahoo/processing/rendering/AsynchronousSectionedRenderer.java
@@ -363,6 +363,7 @@ public abstract class AsynchronousSectionedRenderer<RESPONSE extends Response> e
             endRenderLevel(list);
             stream.flush();
             dataListListenerStack.removeFirst();
+            list.close();
             if (parent != null)
                 parent.childCompleted();
         }