jolshan commented on a change in pull request #11331:
URL: https://github.com/apache/kafka/pull/11331#discussion_r745010308
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File path:
clients/src/main/java/org/apache/kafka/clients/FetchSessionHandler.java
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@@ -340,11 +340,9 @@ public FetchRequestData build() {
// Add topic IDs to session if we can use them. If an ID is
inconsistent, we will handle in the receiving broker.
// If we switched from using topic IDs to not using them (or vice
versa), that error will also be handled in the receiving broker.
if (canUseTopicIds) {
- Map<Uuid, Set<String>> newTopicNames =
added.stream().collect(Collectors.groupingByConcurrent(TopicIdPartition::topicId,
- Collectors.mapping(topicIdPartition ->
topicIdPartition.topicPartition().topic(), Collectors.toSet())));
-
- // There should only be one topic name per topic ID.
- newTopicNames.forEach((topicId, topicNamesSet) ->
topicNamesSet.forEach(topicName -> sessionTopicNames.put(topicId, topicName)));
+ sessionTopicNames = topicNames;
+ } else {
+ sessionTopicNames = Collections.emptyMap();
Review comment:
Do we need to reassign to empty map here?
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