[GitHub] [kafka] vvcephei commented on a change in pull request #11513: KAFKA-13506: Write and restore position to/from changelog

[GitBox]

vvcephei commented on a change in pull request #11513:
URL: https://github.com/apache/kafka/pull/11513#discussion_r765060632



##########
File path: 
streams/src/main/java/org/apache/kafka/streams/state/internals/ChangeLoggingSessionBytesStore.java
##########
@@ -79,15 +94,21 @@ public void init(final StateStoreContext context, final 
StateStore root) {
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public void remove(final Windowed<Bytes> sessionKey) {
         wrapped().remove(sessionKey);
-        context.logChange(name(), SessionKeySchema.toBinary(sessionKey), null, 
context.timestamp());
+        context.logChange(name(), SessionKeySchema.toBinary(sessionKey), null, 
context.timestamp(), position);

Review comment:
       Yep, I think that's correct anyhow, since deleting a record from a store 
is also an update to its state, and the position should uniquely correspond to 
whether you see the delete or not.




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