liangyepianzhou commented on code in PR #21406:
URL: https://github.com/apache/pulsar/pull/21406#discussion_r1368030805
##########
pulsar-broker/src/test/java/org/apache/pulsar/broker/transaction/buffer/TopicTransactionBufferTest.java:
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@@ -179,4 +182,57 @@ public void testCloseTransactionBufferWhenTimeout() throws
Exception {
Assert.assertTrue(f.isCompletedExceptionally());
}
+ /**
+ * This test verifies the state changes of a TransactionBuffer within a
topic under different conditions.
+ * Initially, the TransactionBuffer is in a NoSnapshot state upon topic
creation.
+ * It remains in the NoSnapshot state even after a normal message is sent.
+ * The state changes to Ready only after a transactional message is sent.
+ * The test also ensures that the TransactionBuffer can be correctly
recovered after the topic is unloaded.
+ */
+ @Test
+ public void testWriteSnapshotWhenFirstTxnMessageSend() throws Exception {
+ String topic = "persistent://" + NAMESPACE1 +
"/testWriteSnapshotWhenFirstTxnMessageSend";
+ admin.topics().createNonPartitionedTopic(topic);
+ PersistentTopic persistentTopic = (PersistentTopic)
pulsarServiceList.get(0).getBrokerService()
+ .getTopic(topic, false)
+ .get()
+ .get();
+ persistentTopic.checkIfTransactionBufferRecoverCompletely(true).get();
+ TopicTransactionBuffer topicTransactionBuffer =
(TopicTransactionBuffer) persistentTopic.getTransactionBuffer();
+ // The TransactionBuffer should be in NoSnapshot state when the topic
is initially created
+ Assert.assertEquals(topicTransactionBuffer.getState(),
TopicTransactionBufferState.State.NoSnapshot);
Review Comment:
There is a wait
`persistentTopic.checkIfTransactionBufferRecoverCompletely(true).get();` before
this check.
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