[GitHub] [kafka] chia7712 commented on a change in pull request #9663: MINOR: Small cleanups in `AlterIsr` handling logic

[GitBox <gi...@apache.org>]

chia7712 commented on a change in pull request #9663:
URL: https://github.com/apache/kafka/pull/9663#discussion_r533126745



##########
File path: core/src/main/scala/kafka/cluster/Partition.scala
##########
@@ -1372,23 +1390,27 @@ class Partition(val topicPartition: TopicPartition,
    * Since our error was non-retryable we are okay staying in this state until we see new metadata from UpdateMetadata
    * or LeaderAndIsr
    */
-  private def handleAlterIsrResponse(proposedIsr: Set[Int], result: Either[Errors, LeaderAndIsr]): Unit = {
+  private def handleAlterIsrResponse(proposedIsrState: IsrState, result: Either[Errors, LeaderAndIsr]): Unit = {

Review comment:
       Could we rewrite it by currying?
   
   *Before*
   ```scala
       val callbackPartial = handleAlterIsrResponse(proposedIsrState, _ : Either[Errors, LeaderAndIsr])
   
       if (!alterIsrManager.enqueue(AlterIsrItem(topicPartition, newLeaderAndIsr, callbackPartial))) {
         throw new IllegalStateException(s"Failed to enqueue `AlterIsr` request with state " +
           s"$newLeaderAndIsr for partition $topicPartition")
       }
   ```
   
   *After*
   ```scala
   
       if (!alterIsrManager.enqueue(AlterIsrItem(topicPartition, newLeaderAndIsr, handleAlterIsrResponse(proposedIsrState)))) {
         throw new IllegalStateException(s"Failed to enqueue `AlterIsr` request with state " +
           s"$newLeaderAndIsr for partition $topicPartition")
       }
   ```




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