ijuma commented on code in PR #18801: URL: https://github.com/apache/kafka/pull/18801#discussion_r1941425411
########## core/src/main/scala/kafka/server/metadata/KRaftMetadataCache.scala: ########## @@ -345,68 +344,69 @@ class KRaftMetadataCache( Option(_currentImage.cluster.broker(brokerId)).count(_.inControlledShutdown) == 1 } - override def getAliveBrokers(): Iterable[BrokerMetadata] = getAliveBrokers(_currentImage) + override def getAliveBrokers(): util.List[BrokerMetadata] = getAliveBrokers(_currentImage) - private def getAliveBrokers(image: MetadataImage): Iterable[BrokerMetadata] = { + private def getAliveBrokers(image: MetadataImage): util.List[BrokerMetadata] = { image.cluster().brokers().values().asScala.filterNot(_.fenced()). map(b => new BrokerMetadata(b.id, b.rack)) - } + }.toList.asJava - override def getAliveBrokerNode(brokerId: Int, listenerName: ListenerName): Option[Node] = { - Option(_currentImage.cluster().broker(brokerId)).filterNot(_.fenced()). - flatMap(_.node(listenerName.value()).toScala) + override def getAliveBrokerNode(brokerId: Int, listenerName: ListenerName): util.Optional[Node] = { + util.Optional.ofNullable(_currentImage.cluster().broker(brokerId)) + .filter(broker => !broker.fenced()) + .flatMap(broker => broker.node(listenerName.value())) } - override def getAliveBrokerNodes(listenerName: ListenerName): Seq[Node] = { + override def getAliveBrokerNodes(listenerName: ListenerName): util.List[Node] = { _currentImage.cluster().brokers().values().asScala.filterNot(_.fenced()). Review Comment: We should remove `asScala` from here and use `stream` instead. -- 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