[jira] [Created] (FLINK-3404) Extend Kafka consumers with interface StoppableFunction

[Shang Yuanchun (Jira)]

Matthias J. Sax created FLINK-3404:
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             Summary: 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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