[GitHub] [kafka] ijuma commented on a diff in pull request #13094: MINOR: Various cleanups in client tests

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

ijuma commented on code in PR #13094:
URL: https://github.com/apache/kafka/pull/13094#discussion_r1066628366


##########
clients/src/main/java/org/apache/kafka/clients/FetchSessionHandler.java:
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@@ -266,7 +266,14 @@ public void add(TopicPartition topicPartition, PartitionData data) {
             }
         }
 
+        /**
+         * Build a FetchRequestData for the provided partitions
+         * @throws IllegalStateException if it has already been called
+         */
         public FetchRequestData build() {
+            if (next == null) {
+                throw new IllegalStateException("build() has already been called.");

Review Comment:
   This is not a test change?



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