jolshan commented on code in PR #13231:
URL: https://github.com/apache/kafka/pull/13231#discussion_r1107590667


##########
core/src/main/scala/kafka/server/KafkaApis.scala:
##########
@@ -2383,68 +2384,101 @@ class KafkaApis(val requestChannel: RequestChannel,
     if (config.interBrokerProtocolVersion.isLessThan(version))
       throw new UnsupportedVersionException(s"inter.broker.protocol.version: 
${config.interBrokerProtocolVersion.version} is less than the required version: 
${version.version}")
   }
-
-  def handleAddPartitionToTxnRequest(request: RequestChannel.Request, 
requestLocal: RequestLocal): Unit = {
+  def handleAddPartitionsToTxnRequest(request: RequestChannel.Request, 
requestLocal: RequestLocal): Unit = {
     ensureInterBrokerVersion(IBP_0_11_0_IV0)
-    val addPartitionsToTxnRequest = request.body[AddPartitionsToTxnRequest]
-    val transactionalId = addPartitionsToTxnRequest.data.transactionalId
-    val partitionsToAdd = addPartitionsToTxnRequest.partitions.asScala
-    if (!authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, 
transactionalId))
-      requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
-        addPartitionsToTxnRequest.getErrorResponse(requestThrottleMs, 
Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.exception))
-    else {
-      val unauthorizedTopicErrors = mutable.Map[TopicPartition, Errors]()
-      val nonExistingTopicErrors = mutable.Map[TopicPartition, Errors]()
-      val authorizedPartitions = mutable.Set[TopicPartition]()
-
-      val authorizedTopics = authHelper.filterByAuthorized(request.context, 
WRITE, TOPIC,
-        partitionsToAdd.filterNot(tp => Topic.isInternal(tp.topic)))(_.topic)
-      for (topicPartition <- partitionsToAdd) {
-        if (!authorizedTopics.contains(topicPartition.topic))
-          unauthorizedTopicErrors += topicPartition -> 
Errors.TOPIC_AUTHORIZATION_FAILED
-        else if (!metadataCache.contains(topicPartition))
-          nonExistingTopicErrors += topicPartition -> 
Errors.UNKNOWN_TOPIC_OR_PARTITION
-        else
-          authorizedPartitions.add(topicPartition)
+    val lock = new Object

Review Comment:
   i can do that



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