gvdutra opened a new pull request, #23374: URL: https://github.com/apache/kafka/pull/23374
When a downstream processor writes an unchanged record back into its cached aggregate store, the cache marks it dirty again during flushing. The pending entry is later forwarded during TopologyTestDriver.close(), after the processors have closed, causing a ProcessorStateException. Preserve the existing cache entry when both its value and record context are unchanged, while updating its LRU position. This prevents the redundant write from leaving another record to flush. Validation: the regression test fails before the fix and passes afterward in both at-least-once and exactly-once modes. NamedCacheTest, Checkstyle, SpotBugs, Spotless, and git diff --check also pass. Jira: https://issues.apache.org/jira/browse/KAFKA-17429 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
