bryanck commented on code in PR #10792:
URL: https://github.com/apache/iceberg/pull/10792#discussion_r1695768314


##########
kafka-connect/kafka-connect/src/main/java/org/apache/iceberg/connect/channel/CoordinatorThread.java:
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@@ -65,5 +66,15 @@ boolean isTerminated() {
 
   void terminate() {
     terminated = true;
+
+    try {
+      join(60_000);

Review Comment:
   Thinking out loud here,  I'm considering using the consumer group generation 
ID to fence "zombie" coordinators, similar to how Kafka implements zombie 
fencing. For example, store the generation ID when we start the coordinator and 
assert that generation ID matches the current before we commit.



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