cmccabe commented on code in PR #15702: URL: https://github.com/apache/kafka/pull/15702#discussion_r1614156696
########## metadata/src/main/java/org/apache/kafka/controller/ConfigurationControlManager.java: ########## @@ -308,6 +330,48 @@ private ApiError validateAlterConfig(ConfigResource configResource, return ApiError.NONE; } + void maybeTriggerPartitionUpdateOnMinIsrChange(List<ApiMessageAndVersion> records) { + List<ConfigRecord> minIsrRecords = new ArrayList<>(); + Map<String, String> topicMap = new HashMap<>(); + Map<String, String> configRemovedTopicMap = new HashMap<>(); + records.forEach(record -> { + if (MetadataRecordType.fromId(record.message().apiKey()) == MetadataRecordType.CONFIG_RECORD) { + ConfigRecord configRecord = (ConfigRecord) record.message(); + if (configRecord.name().equals(TopicConfig.MIN_IN_SYNC_REPLICAS_CONFIG)) { + minIsrRecords.add(configRecord); + if (Type.forId(configRecord.resourceType()) == Type.TOPIC) { + if (configRecord.value() == null) topicMap.put(configRecord.resourceName(), configRecord.value()); + else configRemovedTopicMap.put(configRecord.resourceName(), configRecord.value()); + } + } + } + }); + + if (minIsrRecords.isEmpty()) return; + if (topicMap.size() == minIsrRecords.size()) { + // If all the min isr config updates are on the topic level, we can trigger a simpler update just on the + // updated topics. + records.addAll(minIsrConfigUpdatePartitionHandler.addRecordsForMinIsrUpdate( + new ArrayList<>(topicMap.keySet()), + topicName -> topicMap.get(topicName)) + ); + return; + } + + // Because it may require multiple layer look up for the min ISR config value. Build a config data copy and apply + // the config updates to it. Use this config copy for the min ISR look up. + Map<ConfigResource, TimelineHashMap<String, String>> pendingConfigData = new HashMap<>(); + SnapshotRegistry localSnapshotRegistry = new SnapshotRegistry(new LogContext("dummy-config-update")); Review Comment: Maybe I'm missing something, but I don't think this works... `pendingConfigData` will have some of the new changes you made, but not all of the existing changes. So, for example, perhaps we are changing the cluster config for min topic ISR, but the node config for the current controller node is unchanged. It should take priority, but it won't be in here. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org