omkreddy commented on code in PR #17537:
URL: https://github.com/apache/kafka/pull/17537#discussion_r1827556947
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core/src/test/java/kafka/test/api/ShareConsumerTest.java:
##########
@@ -255,6 +257,44 @@ public void testSubscriptionAndPollMultiple(String
persister) {
producer.close();
}
+ @ParameterizedTest(name = "{displayName}.persister={0}")
+ @ValueSource(strings = {NO_OP_PERSISTER, DEFAULT_STATE_PERSISTER})
+ public void testAcknowledgementSentOnSubscriptionChange(String persister)
throws ExecutionException, InterruptedException {
+ Map<TopicPartition, Set<Long>> partitionOffsetsMap = new HashMap<>();
+ Map<TopicPartition, Exception> partitionExceptionMap = new HashMap<>();
+
+ ProducerRecord<byte[], byte[]> record = new
ProducerRecord<>(tp.topic(), tp.partition(), null, "key".getBytes(),
"value".getBytes());
+ KafkaProducer<byte[], byte[]> producer = createProducer(new
ByteArraySerializer(), new ByteArraySerializer());
+ producer.send(record);
+ ProducerRecord<byte[], byte[]> record2 = new
ProducerRecord<>(tp2.topic(), tp2.partition(), null, "key".getBytes(),
"value".getBytes());
+ producer.send(record2).get();
+ KafkaShareConsumer<byte[], byte[]> shareConsumer =
createShareConsumer(new ByteArrayDeserializer(), new ByteArrayDeserializer(),
"group1");
+ shareConsumer.setAcknowledgementCommitCallback(new
TestableAcknowledgeCommitCallback(partitionOffsetsMap, partitionExceptionMap));
+
+ shareConsumer.subscribe(Collections.singleton(tp.topic()));
+
+ ConsumerRecords<byte[], byte[]> records =
shareConsumer.poll(Duration.ofMillis(5000));
+ assertEquals(1, records.count());
+
+ shareConsumer.subscribe(Collections.singletonList(tp2.topic()));
+
+ // Waiting for heartbeat to propagate the subscription change.
+ TestUtils.waitForCondition(() ->
shareConsumer.poll(Duration.ofMillis(2000)).count() == 1,
+ DEFAULT_MAX_WAIT_MS, 100L, () -> "Failed to consume records
from the updated subscription");
+
+ producer.send(record2).get();
+
+ //Starting the 3rd poll to invoke the callback
+ shareConsumer.poll(Duration.ofMillis(500));
+
+ // Verifying if the callback was invoked for the partitions in the old
subscription.
+ assertTrue(partitionExceptionMap.containsKey(tp));
+ assertNull(partitionExceptionMap.get(tp));
+
+ producer.close();
Review Comment:
nit: can we use try..finally to close the resources here and other tests
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