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https://issues.apache.org/jira/browse/KAFKA-13431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Diego Erdody updated KAFKA-13431:
---------------------------------
Labels: needs-kip (was: )
> 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
> Priority: Major
> Labels: needs-kip
>
> 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.
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