mjsax commented on code in PR #20833:
URL: https://github.com/apache/kafka/pull/20833#discussion_r2507373469
##########
streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamsPartitionAssignor.java:
##########
@@ -1458,6 +1458,14 @@ protected boolean maybeUpdateSubscriptionVersion(final
int receivedAssignmentMet
@Override
public void onAssignment(final Assignment assignment, final
ConsumerGroupMetadata metadata) {
+ final Set<Task> tasksWithOpenTransactions = taskManager.allOwnedTasks()
+ .values()
+ .stream()
+ .filter(t -> t.commitNeeded())
+ .collect(Collectors.toSet());
+ log.info("Committing {} tasks with open transactions before
onAssignment()", tasksWithOpenTransactions.size());
+ taskManager.commit(tasksWithOpenTransactions);
Review Comment:
I believe is messes up the rebalancing and might not just cleanly bubble up
to `poll()`. \cc @lianetm to confirm
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