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https://issues.apache.org/jira/browse/KAFKA-2403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14660911#comment-14660911
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Jason Gustafson commented on KAFKA-2403:
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No hurry to get this checked in, but I thought I'd submit an initial patch.
Would be nice to get some feedback to see if this is what people had in mind
for this API.
> Expose offset commit metadata in new consumer
> ---------------------------------------------
>
> Key: KAFKA-2403
> URL: https://issues.apache.org/jira/browse/KAFKA-2403
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Priority: Minor
>
> The offset commit protocol supports the ability to add user metadata to
> commits, but this is not yet exposed in the new consumer API. The
> straightforward way to add it is to create a container for the offset and
> metadata and adjust the KafkaConsumer API accordingly.
> {code}
> OffsetMetadata {
> long offset;
> String metadata;
> }
> KafkaConsumer {
> commit(Map<TopicPartition, OffsetMetadata>)
> OffsetMetadata committed(TopicPartition)
> }
> {code}
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