ijuma commented on a change in pull request #10584: URL: https://github.com/apache/kafka/pull/10584#discussion_r635206076
########## File path: core/src/main/scala/kafka/server/KafkaApis.scala ########## @@ -1142,6 +1142,19 @@ class KafkaApis(val requestChannel: RequestChannel, val metadataRequest = request.body[MetadataRequest] val requestVersion = request.header.apiVersion + // Topic IDs are not supported for versions 10 and 11. Topic names can not be null in these versions. + if (metadataRequest.version() >= 10 && !metadataRequest.isAllTopics) { + metadataRequest.data().topics().forEach{ topic => + // If null, set to the empty string, since the response does not allow null. + if (topic.name() == null) { + topic.setName("") + throw new InvalidRequestException(s"Topic name can not be null for version ${metadataRequest.version()}") + } else if (topic.topicId() != Uuid.ZERO_UUID) { + throw new InvalidRequestException(s"Topic IDs are not supported in requests for version ${metadataRequest.version()}") + } + } + } Review comment: Can we not do such validation in the request class? -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org