AyoubOm commented on code in PR #15790:
URL: https://github.com/apache/kafka/pull/15790#discussion_r1618387142


##########
streams/src/main/java/org/apache/kafka/streams/processor/internals/SinkNode.java:
##########
@@ -58,8 +60,21 @@ public void addChild(final ProcessorNode<Void, Void, ?, ?> 
child) {
     public void init(final InternalProcessorContext<Void, Void> context) {
         super.init(context);
         this.context = context;
-        keySerializer = prepareKeySerializer(keySerializer, context, 
this.name());
-        valSerializer = prepareValueSerializer(valSerializer, context, 
this.name());
+        try {
+            keySerializer = prepareKeySerializer(keySerializer, context, 
this.name());
+        } catch (final ConfigException e) {
+            throw new ConfigException(String.format("Failed to initialize key 
serdes for sink node %s", name()));
+        } catch (final StreamsException e) {

Review Comment:
   @mjsax the idea was to preserve the exception that was thrown, as I think 
StreamsException and ConfigException don't have the same nature. AFAIK 
StreamsException captures problems related to the state of the task. If you 
believe it's ok to throw StreamsException here, I can do the change



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