carp84 commented on a change in pull request #8122: [FLINK-12121] [State 
Backends] Use composition instead of inheritance for the InternalKeyContext 
logic in backend
URL: https://github.com/apache/flink/pull/8122#discussion_r273322899
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/state/AbstractKeyedStateBackend.java
 ##########
 @@ -175,8 +173,8 @@ public void dispose() {
        @Override
        public void setCurrentKey(K newKey) {
                notifyKeySelected(newKey);
-               this.currentKey = newKey;
-               this.currentKeyGroup = 
KeyGroupRangeAssignment.assignToKeyGroup(newKey, numberOfKeyGroups);
+               this.keyContext.setCurrentKey(newKey);
 
 Review comment:
   Maybe keeping the setters/getters in pair is a better idea? Wdyt? Thanks.

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