zheguang opened a new pull request, #20807: URL: https://github.com/apache/kafka/pull/20807
Prior to KAFKA-19669, merge repartition topics optimization stops at value-changing operations (mapValues, flatMapValues, etc.) As a result, topology builder cannot merge repartition topics that are separated by value-changing operations, which results in multiple repartition topics even when they could be merged. This patch introduces tracking value serdes at each node. This allows pushing repartition upstream past value-changing operations by switching to upstream serdes when resolving. As a result, it enables merging repartitions across value-changing boundaries. -- 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]
