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KAFKA-20782: IQ bug under streams protocol #22778

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KAFKA-20782: IQ bug under streams protocol #22778

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b15a91e
failed test
UladzislauBlok Jul 7, 2026
447523d
merged view for IQ
UladzislauBlok Jul 7, 2026
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17 changes: 15 additions & 2 deletions ...java/org/apache/kafka/clients/consumer/internals/StreamsGroupHeartbeatRequestManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -834,8 +834,21 @@ private static Map<StreamsRebalanceData.HostInfo, StreamsRebalanceData.EndpointP
List<TopicPartition> activeTopicPartitions = getTopicPartitionList(endpoint.activePartitions());
List<TopicPartition> standbyTopicPartitions = getTopicPartitionList(endpoint.standbyPartitions());
StreamsGroupHeartbeatResponseData.Endpoint userEndpoint = endpoint.userEndpoint();
StreamsRebalanceData.EndpointPartitions endpointPartitions = new StreamsRebalanceData.EndpointPartitions(activeTopicPartitions, standbyTopicPartitions);
partitionsByHost.put(new StreamsRebalanceData.HostInfo(userEndpoint.host(), userEndpoint.port()), endpointPartitions);
StreamsRebalanceData.HostInfo hostInfo = new StreamsRebalanceData.HostInfo(userEndpoint.host(), userEndpoint.port());

partitionsByHost.merge(
hostInfo,
new StreamsRebalanceData.EndpointPartitions(activeTopicPartitions, standbyTopicPartitions),
(existing, newPartitions) -> {
List<TopicPartition> mergedActive = existing.activePartitions();
mergedActive.addAll(newPartitions.activePartitions());

List<TopicPartition> mergedStandby = existing.standbyPartitions();
mergedStandby.addAll(newPartitions.standbyPartitions());

return new StreamsRebalanceData.EndpointPartitions(mergedActive, mergedStandby);
}
);
});
return partitionsByHost;
}
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1 change: 1 addition & 0 deletions ...st/java/org/apache/kafka/streams/integration/IQv2EndpointToPartitionsIntegrationTest.java
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Expand Up @@ -110,6 +110,7 @@ public void shouldGetCorrectHostPartitionInformation(final String groupProtocolC
streamOneProperties.put(StreamsConfig.STATE_DIR_CONFIG, TestUtils.tempDirectory(appId).getPath() + "-ks1");
streamOneProperties.put(StreamsConfig.CLIENT_ID_CONFIG, appId + "-ks1");
streamOneProperties.put(StreamsConfig.APPLICATION_SERVER_CONFIG, "localhost:2020");
streamOneProperties.put(StreamsConfig.NUM_STREAM_THREADS_CONFIG, 3);
streamOneProperties.put(StreamsConfig.GROUP_PROTOCOL_CONFIG, groupProtocolConfig);
if (usingStandbyReplicas) {
streamOneProperties.put(StreamsConfig.NUM_STANDBY_REPLICAS_CONFIG, numStandbyReplicas);
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