lhunyady commented on a change in pull request #11333:
URL: https://github.com/apache/kafka/pull/11333#discussion_r712103493



##########
File path: 
connect/api/src/main/java/org/apache/kafka/connect/connector/Connector.java
##########
@@ -150,4 +152,15 @@ public Config validate(Map<String, String> 
connectorConfigs) {
      * @return The ConfigDef for this connector; may not be null.
      */
     public abstract ConfigDef config();
+
+    private void validateConfigDoesNotContainNull(Map<String, String> 
connectorConfigs) {
+        final String keysWithNullValue = connectorConfigs.entrySet().stream()
+                .filter(entry -> entry.getValue() == null)
+                .map(Map.Entry::getKey)
+                .collect(Collectors.joining(", "));
+
+        if (!keysWithNullValue.isEmpty()) {
+            throw new ConnectException(String.format("Null value found in 
config for key(s) %s", keysWithNullValue));

Review comment:
       Thank you for the comment, updated it in the latest commit.




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