liangyepianzhou commented on code in PR #15137:
URL: https://github.com/apache/pulsar/pull/15137#discussion_r850996724
##########
pulsar-broker/src/test/java/org/apache/pulsar/broker/transaction/pendingack/PendingAckPersistentTest.java:
##########
@@ -345,4 +350,103 @@ private void
testDeleteTopicThenDeletePendingAckManagedLedger() throws Exception
assertFalse(topics.contains(MLPendingAckStore.getTransactionPendingAckStoreSuffix(topic,
subName2)));
assertFalse(topics.contains(topic));
}
+
+ @Test
+ public void testDeleteUselessLogDataWhenSubCursorMoved() throws Exception {
+
getPulsarServiceList().get(0).getConfig().setTransactionPendingAckLogIndexMinLag(5);
+
getPulsarServiceList().get(0).getConfiguration().setManagedLedgerDefaultMarkDeleteRateLimit(5);
+ String subName = "test-log-delete";
+ String topic = TopicName.get(TopicDomain.persistent.toString(),
+ NamespaceName.get(NAMESPACE1), "test-log-delete").toString();
+
+ @Cleanup
+ Consumer<byte[]> consumer = pulsarClient.newConsumer()
+ .topic(topic)
+ .subscriptionName(subName)
+ .subscribe();
+ @Cleanup
+ Producer<byte[]> producer = pulsarClient.newProducer()
+ .topic(topic)
+ .sendTimeout(0, TimeUnit.SECONDS)
+ .enableBatching(false)
+ .create();
+
+ for (int i = 0; i < 20; i++) {
+ producer.newMessage().send();
+ }
+ // init
+ Message<byte[]> message = consumer.receive(5, TimeUnit.SECONDS);
+ Transaction transaction = pulsarClient.newTransaction()
+ .withTransactionTimeout(5, TimeUnit.SECONDS)
+ .build()
+ .get();
+ consumer.acknowledgeAsync(message.getMessageId(), transaction);
+ transaction.commit().get();
+
+ PersistentTopic persistentTopic = (PersistentTopic)
getPulsarServiceList().get(0)
+ .getBrokerService().getTopic(topic, false).get().get();
+
+ PersistentSubscription persistentSubscription =
persistentTopic.getSubscription(subName);
+ Field field =
PersistentSubscription.class.getDeclaredField("pendingAckHandle");
+ field.setAccessible(true);
+ PendingAckHandleImpl pendingAckHandle = (PendingAckHandleImpl)
field.get(persistentSubscription);
+ Field field1 =
PendingAckHandleImpl.class.getDeclaredField("pendingAckStoreFuture");
+ field1.setAccessible(true);
+ PendingAckStore pendingAckStore =
((CompletableFuture<PendingAckStore>) field1.get(pendingAckHandle)).get();
+
+ Field field3 =
MLPendingAckStore.class.getDeclaredField("pendingAckLogIndex");
+ Field field4 =
MLPendingAckStore.class.getDeclaredField("upperLimitOfLogAppendTimes");
+
+ field3.setAccessible(true);
+ field4.setAccessible(true);
+
+ ConcurrentSkipListMap<PositionImpl, PositionImpl> pendingAckLogIndex =
+ (ConcurrentSkipListMap<PositionImpl, PositionImpl>)
field3.get(pendingAckStore);
+ long upperLimitOfLogAppendTimes = (long) field4.get(pendingAckStore);
+ Assert.assertEquals(pendingAckLogIndex.size(), 1);
Review Comment:
If do not commit, the pendingAck store has not been init, and a null pointer
exception will be reported.
The problem you pointed out above may exist, but the probability is very low.
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