rkhachatryan commented on a change in pull request #16050:
URL: https://github.com/apache/flink/pull/16050#discussion_r645443818
##########
File path:
flink-state-backends/flink-statebackend-changelog/src/main/java/org/apache/flink/state/changelog/ChangelogKeyedStateBackend.java
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@@ -75,7 +76,8 @@
class ChangelogKeyedStateBackend<K>
implements CheckpointableKeyedStateBackend<K>,
CheckpointListener,
- TestableKeyedStateBackend {
+ TestableKeyedStateBackend,
+ DelegatingKeyedStateBackend<K> {
Review comment:
That's a good point. The interface is currently used only in tests
(considering other PRs too).
Are you proposing to add something like
```
default KeyedStateBackend<K> getDelegatedKeyedStateBackend() {
return this;
}
```
to `TestableKeyedStateBackend`?
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