Some internal caches did not use the LRU mechanism.

h2/src/main/org/h2/store/fs/FileObjectMemory.java

@@ -47,6 +47,7 @@ public class FileObjectMemory implements FileObject {
         private int size;
 
         Cache(int size) {
+            super(size, (float) 0.75, true);
             this.size = size;
         }
 

h2/src/main/org/h2/util/SmallLRUCache.java

@@ -30,6 +30,7 @@ extends HashMap
     private int size;
 
     public SmallLRUCache(int size) {
+        super(size, (float) 0.75, true);
         this.size = size;
     }