mjsax commented on a change in pull request #11347:
URL: https://github.com/apache/kafka/pull/11347#discussion_r713232644
##########
File path:
streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamsPartitionAssignor.java
##########
@@ -351,6 +351,17 @@ public GroupAssignment assign(final Cluster metadata,
final GroupSubscription gr
// add the consumer and any info in its subscription to the client
clientMetadata.addConsumer(consumerId,
subscription.ownedPartitions());
+ if (allOwnedPartitions.stream().anyMatch(t ->
subscription.ownedPartitions().contains(t))) {
+ log.warn("The previous assignment contains a partition more
than once. " +
+ "This might result in violation of EOS if enabled. \n" +
Review comment:
Not sure if we need to call out EOS in particular? It's incorrect in any
case.
##########
File path:
streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamsPartitionAssignor.java
##########
@@ -351,6 +351,17 @@ public GroupAssignment assign(final Cluster metadata,
final GroupSubscription gr
// add the consumer and any info in its subscription to the client
clientMetadata.addConsumer(consumerId,
subscription.ownedPartitions());
+ if (allOwnedPartitions.stream().anyMatch(t ->
subscription.ownedPartitions().contains(t))) {
+ log.warn("The previous assignment contains a partition more
than once. " +
+ "This might result in violation of EOS if enabled. \n" +
Review comment:
Wondering if we should print the full old-assignment a single time if we
detect any error instead? Would be helpful to get the `client.id ->
old-assignment` mapping?
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