Re: [I] Flaky-test: GeoReplicationTest.testTopicReplication [pulsar]

["lhotari (via GitHub)" <gi...@apache.org>]

lhotari commented on issue #15913:
URL: https://github.com/apache/pulsar/issues/15913#issuecomment-4133404521

   Another occurrence of this flaky test.
   
   **Example failure:** https://github.com/apache/pulsar/actions/runs/23586018795/job/68681280441
   
   **Failed variant:** `testTopicReplication[non-persistent](6)` (retry attempt — invocation 4 was skipped due to prior failed setup)
   
   **Stack trace:**
   ```
   java.lang.AssertionError: expected object to not be null
   	at org.testng.Assert.assertNotNull(Assert.java:1483)
   	at org.apache.pulsar.tests.integration.messaging.GeoReplicationTest.testTopicReplication(GeoReplicationTest.java:124)
   ```
   
   **Analysis:** The persistent variant passed (18.4s), but the non-persistent variant timed out after 21s. The test sends 10 messages from cluster1 and expects to receive all 10 on cluster2 with a 10-second per-message timeout. `c.receive(10, TimeUnit.SECONDS)` returned null, meaning the non-persistent message was not replicated in time. Non-persistent topics don't guarantee delivery — messages can be lost if the replication cursor hasn't caught up or connections aren't fully established between clusters in the containerized CI environment.


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