diff -r df6f2350edfa -r 6530de931b8e src/hotspot/share/gc/g1/g1HeapTransition.hpp
--- a/src/hotspot/share/gc/g1/g1HeapTransition.hpp	Wed Nov 13 10:49:32 2019 -0800
+++ b/src/hotspot/share/gc/g1/g1HeapTransition.hpp	Wed Nov 13 10:51:41 2019 -0800
@@ -39,7 +39,13 @@
     size_t _humongous_length;
     const metaspace::MetaspaceSizesSnapshot _meta_sizes;
 
+    // Only includes current eden regions.
+    uint* _eden_length_per_node;
+    // Only includes current survivor regions.
+    uint* _survivor_length_per_node;
+
     Data(G1CollectedHeap* g1_heap);
+    ~Data();
   };
 
   G1CollectedHeap* _g1_heap;