aiwenmo commented on code in PR #3636:
URL: https://github.com/apache/flink-cdc/pull/3636#discussion_r1797537900


##########
flink-cdc-runtime/src/main/java/org/apache/flink/cdc/runtime/operators/schema/SchemaOperator.java:
##########
@@ -624,4 +672,21 @@ public void snapshotState(StateSnapshotContext context) 
throws Exception {
         // Needless to do anything, since AbstractStreamOperator#snapshotState 
and #processElement
         // is guaranteed not to be mixed together.
     }
+
+    private static TimestampData castToTimestamp(Object object, String 
timezone) {
+        if (object == null) {
+            return null;
+        }
+        if (object instanceof LocalZonedTimestampData) {
+            return TimestampData.fromLocalDateTime(
+                    LocalDateTime.ofInstant(
+                            ((LocalZonedTimestampData) object).toInstant(), 
ZoneId.of(timezone)));
+        } else if (object instanceof ZonedTimestampData) {
+            return TimestampData.fromLocalDateTime(
+                    LocalDateTime.ofInstant(
+                            ((ZonedTimestampData) object).toInstant(), 
ZoneId.of(timezone)));
+        } else {
+            return 
TimestampData.fromLocalDateTime(LocalDateTime.parse(String.valueOf(object)));
+        }

Review Comment:
   This code may never be executed.



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