[jira] [Created] (KAFKA-13431) Sink Connectors: Support topic-mutating SMTs for async connectors (preCommit users)

["Diego Erdody (Jira)" <ji...@apache.org>]

Diego Erdody created KAFKA-13431:
------------------------------------

             Summary: Sink Connectors: Support topic-mutating SMTs for async connectors (preCommit users)
                 Key: KAFKA-13431
                 URL: https://issues.apache.org/jira/browse/KAFKA-13431
             Project: Kafka
          Issue Type: Improvement
          Components: KafkaConnect
            Reporter: Diego Erdody
            Assignee: Diego Erdody


There's currently an incompatibility between Sink connectors overriding the {{SinkTask.preCommit}} method (for asynchronous processing) and SMTs that mutate the topic field.

The problem was present since the {{preCommit}} method inception and is rooted in a mismatch between the topic/partition that is passed to {{open/preCommit}} (the original topic and partition before applying any transformations) and the topic partition that is present in the SinkRecord that the {{SinkTask.put}} method receives (after transformations are applied). Since that's all the information the connector has to implement any kind of internal offset tracking, the topic/partitions it can return in preCommit will correspond to the transformed topic, when the framework actually expects it to be the original topic.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)