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https://issues.apache.org/jira/browse/FLINK-25696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingsong Lee updated FLINK-25696:
---------------------------------
Parent: FLINK-25152
Issue Type: Sub-task (was: New Feature)
> Introduce metadataConsumer to InitContext in Sink
> -------------------------------------------------
>
> Key: FLINK-25696
> URL: https://issues.apache.org/jira/browse/FLINK-25696
> Project: Flink
> Issue Type: Sub-task
> Components: API / DataStream, Connectors / Kafka, Table Store
> Reporter: Jingsong Lee
> Assignee: Jingsong Lee
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.15.0
>
>
> In Table Store, we want to get the offsets of kafka writer, only the offset
> returned by the callback inside the KafkaWriter is accurate, so we need this
> callback mechanism.
> This ticket wants to add metadataConsumer to InitContext in Sink:
> {code:java}
> /**
> * Returns a metadata consumer, the {@link SinkWriter} can publish metadata
> events of type
> * {@link MetaT} to the consumer. The consumer can accept metadata events in
> an asynchronous
> * thread, and the {@link Consumer#accept} method is executed very fast.
> */
> default <MetaT> Optional<Consumer<MetaT>> metadataConsumer() {
> return Optional.empty();
> }{code}
> SinkWriter can get this consumer, and publish metadata to the consumer
> implemented by table store sink.
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