lucasbru commented on code in PR #19617:
URL: https://github.com/apache/kafka/pull/19617#discussion_r2071176921


##########
streams/integration-tests/src/test/java/org/apache/kafka/streams/integration/AdjustStreamThreadCountTest.java:
##########
@@ -239,10 +241,30 @@ public void shouldAddAndRemoveThreadsMultipleTimes() 
throws InterruptedException
             final CountDownLatch latch = new CountDownLatch(2);
             final Thread one = adjustCountHelperThread(kafkaStreams, 4, latch);
             final Thread two = adjustCountHelperThread(kafkaStreams, 6, latch);
-            two.start();
-            one.start();
-            latch.await(30, TimeUnit.SECONDS);
-            assertThat(kafkaStreams.metadataForLocalThreads().size(), 
equalTo(oldThreadCount));
+            Set<ThreadMetadata> threadMetadata = null;
+
+            AssertionError testError = null;
+            try {
+                two.start();
+                one.start();
+
+                assertTrue(latch.await(30, TimeUnit.SECONDS));
+                one.join();

Review Comment:
   Doesn't this change the test, since you are joining `one` and `two` before 
asserting? Not strictly against that, just pointing it out because the PR 
description only mentions collecting extra logs and fixing a thread leak.



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