Guillaume Nodet created CAMEL-24006:
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Summary: Fix flaky JpaPollingConsumerLockEntityTest
Key: CAMEL-24006
URL: https://issues.apache.org/jira/browse/CAMEL-24006
Project: Camel
Issue Type: Bug
Reporter: Guillaume Nodet
The JpaPollingConsumerLockEntityTest is flaky on CI. Develocity data over the
last 10 days shows:
- testPollingConsumerWithoutLock: 9 failures + 7 flaky out of 270 runs (5.9%)
- testPollingConsumerWithLock: 0 failures + 15 flaky out of 270 runs (5.6%)
The testPollingConsumerWithoutLock test relies on two concurrent JPA polling
consumers racing to update the same versioned entity, expecting an
OptimisticLockException. However, the race condition is not deterministic —
sometimes one request completes before the other starts reading, so no conflict
occurs.
The fix uses a CyclicBarrier in the enrichment strategy to synchronize both
threads after the read step, ensuring they both hold stale entity versions
before either proceeds to write. This makes the conflict deterministic.
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