snuyanzin commented on code in PR #29158:
URL: https://github.com/apache/flink/pull/29158#discussion_r3987916103
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flink-core/src/main/java/org/apache/flink/types/variant/Variant.java:
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@@ -38,6 +38,9 @@
@PublicEvolving
public interface Variant extends Serializable {
+ /** Pinned so interface changes don't alter the UID and break restore of
VARIANT state. */
+ long serialVersionUID = 1L;
Review Comment:
see the code for 2.3.
https://github.com/apache/flink/blob/bad821cb2091433d43a04c8109c515ba84d23a0e/flink-table/flink-sql-gateway/src/main/java/org/apache/flink/table/gateway/rest/serde/LogicalTypeJsonSerializer.java#L186-L190
you can not even serialize it to get savepoint
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