rkhachatryan commented on a change in pull request #17203:
URL: https://github.com/apache/flink/pull/17203#discussion_r708036755
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/state/changelog/ChangelogStateBackendHandle.java
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@@ -48,20 +49,25 @@
List<ChangelogStateHandle> getNonMaterializedStateHandles();
+ UUID getBackendID();
Review comment:
UUID identifies the backend, which allows to avoid collisions of state
id across different backends on recovery (e.g. in case of downscaling).
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