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Minor: fix AdjustStreamThreadCountTest #20620

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Minor: fix AdjustStreamThreadCountTest #20620

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0b87dbe
fix AdjustStreamThreadCountTest
RaidenE1 Oct 1, 2025
371b49f
reduce concurrency
RaidenE1 Oct 2, 2025
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10 changes: 5 additions & 5 deletions ...tests/src/test/java/org/apache/kafka/streams/integration/AdjustStreamThreadCountTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -103,7 +103,7 @@ public static void closeCluster() {
private static StreamsBuilder builder;
private static Properties properties;
private static String appId = "";
public static final Duration DEFAULT_DURATION = Duration.ofSeconds(30);
public static final Duration DEFAULT_DURATION = Duration.ofSeconds(60);

@BeforeEach
public void setup(final TestInfo testInfo) {
Expand Down Expand Up @@ -272,16 +272,16 @@ public void shouldAddAndRemoveThreadsMultipleTimes() throws InterruptedException
stateTransitionHistory.clear();

final CountDownLatch latch = new CountDownLatch(2);
final Thread one = adjustCountHelperThread(kafkaStreams, 4, latch);
final Thread two = adjustCountHelperThread(kafkaStreams, 6, latch);
final Thread one = adjustCountHelperThread(kafkaStreams, 2, latch);
final Thread two = adjustCountHelperThread(kafkaStreams, 3, latch);
Set<ThreadMetadata> threadMetadata = null;

AssertionError testError = null;
try {
two.start();
one.start();

assertTrue(latch.await(30, TimeUnit.SECONDS));
assertTrue(latch.await(90, TimeUnit.SECONDS));
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Why increase the timeout when the number of threads is reduced?

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Hi @chia7712. I think this is not the right way to fix the test, also it's taken by someone else in the community. I guess I'll close this PR. Thanks!

one.join();
two.join();
waitForCondition(
Expand All @@ -290,7 +290,7 @@ public void shouldAddAndRemoveThreadsMultipleTimes() throws InterruptedException
DEFAULT_DURATION.toMillis(),
"Kafka Streams did not stabilize at the expected thread count and RUNNING state."
);

threadMetadata = kafkaStreams.metadataForLocalThreads();
assertThat(threadMetadata.size(), equalTo(oldThreadCount));
} catch (final AssertionError e) {
Expand Down