tzulitai 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_r273341969
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/state/AbstractKeyedStateBackend.java
##########
@@ -201,37 +199,34 @@ public boolean
deregisterKeySelectionListener(KeySelectionListener<K> listener)
*/
@Override
public TypeSerializer<K> getKeySerializer() {
- return keySerializerProvider.currentSchemaSerializer();
+ return keyContext.getCurrentKeySerializer();
}
/**
* @see KeyedStateBackend
*/
@Override
public K getCurrentKey() {
- return currentKey;
+ return this.keyContext.getCurrentKey();
}
/**
* @see KeyedStateBackend
*/
- @Override
public int getCurrentKeyGroupIndex() {
- return currentKeyGroup;
+ return this.keyContext.getCurrentKeyGroupIndex();
}
/**
* @see KeyedStateBackend
*/
- @Override
public int getNumberOfKeyGroups() {
return numberOfKeyGroups;
Review comment:
Why can't we also just depend on the `keyContext` for the number of key
groups and key group range also?
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