li3zhi4 commented on PR #11633:
URL: https://github.com/apache/seatunnel/pull/11633#issuecomment-5268427004

   @DanielLeens — an update on the CI status you flagged in round 11 (the 
`kafka-connector-it (11)` failure on the `73989d5fb` head):
   
   **Root cause confirmed — a Kafka topic-readiness race, not a code defect.** 
The failure was `UnknownTopicOrPartitionException` in 
`KafkaSourceSplitEnumerator.getTopicInfo`: leader visibility in the admin 
metadata view (which `waitForKafkaTopicsReady` checks) does not guarantee the 
broker the job's own Kafka client connects to has finished 
assigning/propagating the partition leader. The new head `0dbea3718` applies 
your round-6 **Option B** suggestion: before submitting the job, the test now 
produces and consumes a throwaway record on the source topic to force metadata 
propagation end-to-end, then deletes it via `deleteRecords` so it does not leak 
into the job's `earliest`-start read. This is test-only; no production code 
touched.
   
   **Verified locally:** `KafkaJsonDefaultValueIT` e2e 1/1 passed on this head. 
The `unit-test (8, windows)` `JobStateEventTest` Hazelcast failure from the 
same run remains a pre-existing, unrelated engine-server flake (confirmed by 
you in round 11), so the feature-relevant jobs are green.
   
   Branch is up to date with `dev`.
   


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