masteryhx commented on code in PR #19679:
URL: https://github.com/apache/flink/pull/19679#discussion_r920920567
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flink-state-backends/flink-statebackend-changelog/src/main/java/org/apache/flink/state/changelog/ChangelogKeyedStateBackend.java:
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@@ -565,18 +568,44 @@ public <N, SV, SEV, S extends State, IS extends S> IS
createInternalState(
StateSnapshotTransformer.StateSnapshotTransformFactory<SEV>
snapshotTransformFactory)
throws Exception {
+ ChangelogState changelogState =
+ changelogStateFactory.getExistingState(
+ stateDesc.getName(), BackendStateType.KEY_VALUE);
+ if (changelogState == null) {
Review Comment:
I have modified the `upgrade` method and make restore procedure always call
`upgrade`.
So currently, `upgrade` may just create a new state or trigger a state
migration and always make the metaInfo could continue to migrate.
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