wcarlson5 commented on a change in pull request #9697:
URL: https://github.com/apache/kafka/pull/9697#discussion_r536416836
##########
File path:
streams/src/test/java/org/apache/kafka/streams/integration/StreamsUncaughtExceptionHandlerIntegrationTest.java
##########
@@ -145,6 +148,26 @@ public void shouldShutdownClient() throws
InterruptedException {
}
}
+ @Test
+ public void shouldReplaceThread() throws InterruptedException {
+ try (final KafkaStreams kafkaStreams = new
KafkaStreams(builder.build(), properties)) {
+ kafkaStreams.setUncaughtExceptionHandler((t, e) -> fail("should
not hit old handler"));
+ AtomicInteger count = new AtomicInteger();
+ kafkaStreams.setUncaughtExceptionHandler(exception -> {
+ count.getAndIncrement();
+ return REPLACE_THREAD;
+ });
+
+
StreamsTestUtils.startKafkaStreamsAndWaitForRunningState(kafkaStreams);
+
+ produceMessages(0L, inputTopic, "A");
+ TestUtils.waitForCondition(() -> count.get() > 2, DEFAULT_TIMEOUT,
"At least 3 threads have died");
Review comment:
All of the original threads have died and been replaced and it is still
running
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