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https://issues.apache.org/jira/browse/FLINK-3404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15268522#comment-15268522
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Martin Liesenberg commented on FLINK-3404:
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ok, I didn't realize that needed to be done first.
and just out of curiosity, what it boils down to, is that some version of
distributed consensus needs to be implemented here first?
> Extend Kafka consumers with interface StoppableFunction
> -------------------------------------------------------
>
> Key: FLINK-3404
> URL: https://issues.apache.org/jira/browse/FLINK-3404
> Project: Flink
> Issue Type: Improvement
> Components: Kafka Connector
> Reporter: Matthias J. Sax
>
> Kafka consumers are not stoppable right now. To make them stoppable, they
> must implement {{StoppableFunction}}. Implementing method {{stop()}} must
> ensure, that the consumer stops pulling new messages from Kafka and issues a
> final checkpoint with the last offset. Afterwards, {{run()}} must return.
> When implementing this, keep in mind, that the gathered checkpoint might
> later be used as a savepoint.
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