loserwang1024 commented on code in PR #3255:
URL: https://github.com/apache/flink-cdc/pull/3255#discussion_r1593302893


##########
flink-cdc-common/src/main/java/org/apache/flink/cdc/common/configuration/ConfigurationUtils.java:
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@@ -130,7 +130,9 @@ static Duration convertToDuration(Object o) {
     }
 
     static String convertToString(Object o) {
-        if (o.getClass() == String.class) {
+        if (o == null) {

Review Comment:
   you are right, just done it.



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