ableegoldman commented on a change in pull request #10985:
URL: https://github.com/apache/kafka/pull/10985#discussion_r668402587
##########
File path:
clients/src/main/java/org/apache/kafka/clients/consumer/internals/AbstractStickyAssignor.java
##########
@@ -130,19 +146,26 @@ private boolean allSubscriptionsEqual(Set<String>
allTopics,
for (final TopicPartition tp : memberData.partitions) {
// filter out any topics that no longer exist or aren't
part of the current subscription
if (allTopics.contains(tp.topic())) {
- ownedPartitions.add(tp);
+
+ if (!allPreviousPartitionsToOwner.containsKey(tp)) {
+ allPreviousPartitionsToOwner.put(tp, consumer);
+ ownedPartitions.add(tp);
+ } else {
+ String otherConsumer =
allPreviousPartitionsToOwner.get(tp);
+ log.warn("Found multiple consumers {} and {}
claiming the same TopicPartition {} in the "
Review comment:
Good point, yes I would absolutely want/hope a user would report this as
a bug. Changed to ERROR
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