Zakelly commented on code in PR #26416:
URL: https://github.com/apache/flink/pull/26416#discussion_r2035185011
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flink-state-backends/flink-statebackend-forst/src/main/java/org/apache/flink/state/forst/ForStKeyedStateBackend.java:
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@@ -445,6 +445,22 @@ private <N, UK, SV>
RegisteredKeyValueStateBackendMetaInfo<N, SV> updateRestored
RegisteredKeyValueStateBackendMetaInfo<N, SV> restoredKvStateMetaInfo
= oldStateInfo.f1;
+ // fetch current namespace serializer now because if it is
incompatible, we can't access
+ // it anymore to improve the error message
+ TypeSerializer<N> previousNamespaceSerializer =
+ restoredKvStateMetaInfo.getNamespaceSerializer();
+
+ TypeSerializerSchemaCompatibility<N> s =
+
restoredKvStateMetaInfo.updateNamespaceSerializer(namespaceSerializer);
+ if (s.isCompatibleAfterMigration() || s.isIncompatible()) {
Review Comment:
@mayuehappy we can keep it if so.
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