Fix merge with outer

Author: AMOOOMA

sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/resourcehints/ResourceHint.java

@@ -28,9 +28,9 @@ public abstract class ResourceHint {
    * environment. Override this method for a custom reconciliation logic. If is_inverse is true the
    * merge result will be flipped.
    */
-  public ResourceHint mergeWithOuter(ResourceHint outer, boolean is_inverse) {
+  public ResourceHint mergeWithOuter(ResourceHint outer, boolean is_sum) {
     // Defaults to the inner value as it is the most specific one.
-    return is_inverse ? outer : this;
+    return this;
   }
 
   /** Defines how to represent the as bytestring. */

sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/resourcehints/ResourceHints.java

@@ -181,9 +181,9 @@ public static long parse(String s) {
     }
 
     @Override
-    public ResourceHint mergeWithOuter(ResourceHint outer, boolean is_inverse) {
-      return is_inverse
-          ? new BytesHint(Math.min(value, ((BytesHint) outer).value))
+    public ResourceHint mergeWithOuter(ResourceHint outer, boolean is_sum) {
+      return is_sum
+          ? new BytesHint(value + ((BytesHint) outer).value)
           : new BytesHint(Math.max(value, ((BytesHint) outer).value));
     }