jolshan commented on code in PR #14470:
URL: https://github.com/apache/kafka/pull/14470#discussion_r1344697202


##########
core/src/main/scala/kafka/server/ReplicaManager.scala:
##########
@@ -763,20 +763,20 @@ class ReplicaManager(val config: KafkaConfig,
         val errorResults = (unverifiedEntries ++ errorsPerPartition).map {
           case (topicPartition, error) =>
             // translate transaction coordinator errors to known producer 
response errors
-            val finalException =
+            val customException =
               error match {
-                case Errors.INVALID_TXN_STATE => error.exception("Partition 
was not added to the transaction")
+                case Errors.INVALID_TXN_STATE => 
Some(error.exception("Partition was not added to the transaction"))
                 case Errors.CONCURRENT_TRANSACTIONS |
                      Errors.COORDINATOR_LOAD_IN_PROGRESS |
                      Errors.COORDINATOR_NOT_AVAILABLE |
-                     Errors.NOT_COORDINATOR => new NotEnoughReplicasException(
-                         s"Unable to verify the partition has been added to 
the transaction. Underlying error: ${error.toString}")
-                case _ => error.exception()
+                     Errors.NOT_COORDINATOR => Some(new 
NotEnoughReplicasException(
+                         s"Unable to verify the partition has been added to 
the transaction. Underlying error: ${error.toString}"))
+                case _ => None
             }
             topicPartition -> LogAppendResult(
               LogAppendInfo.UNKNOWN_LOG_APPEND_INFO,
-              Some(finalException),
-              hasCustomErrorMessage = true
+              Some(customException.getOrElse(error.exception)),

Review Comment:
   This is pretty elegant -- thanks for fixing.



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