dajac commented on code in PR #13240:
URL: https://github.com/apache/kafka/pull/13240#discussion_r1226607855
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/ConsumerCoordinator.java:
##########
@@ -1354,8 +1373,21 @@ public void handle(OffsetCommitResponse commitResponse,
RequestFuture<Void> futu
Set<String> unauthorizedTopics = new HashSet<>();
for (OffsetCommitResponseData.OffsetCommitResponseTopic topic :
commitResponse.data().topics()) {
+ String topicName = topic.name();
+
+ if (this.response.requestHeader().apiVersion() >= 9) {
+ topicName =
topicIdAndNames.topicNameOrNull(topic.topicId());
+
+ if (topicName == null) {
+ // Could only happen if the broker replied with an ID
which was not in the request and
+ // unknown by this client. This would be a bug.
+ log.warn("Ignoring invalid topic ID found in
OffsetCommit response: " + topic.topicId());
+ continue;
+ }
Review Comment:
As a second thought, I wonder if we should complete the future with an
exception here. Being defensive would help us to catch bugs early one. What do
you think?
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