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Posted to issues@flink.apache.org by "Piotr Nowojski (JIRA)" <ji...@apache.org> on 2017/07/17 09:21:00 UTC

[jira] [Created] (FLINK-7210) Add TwoPhaseCommitSinkFunction (implementing exactly-once semantic in generic way)

Piotr Nowojski created FLINK-7210:
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             Summary: Add TwoPhaseCommitSinkFunction (implementing exactly-once semantic in generic way)
                 Key: FLINK-7210
                 URL: https://issues.apache.org/jira/browse/FLINK-7210
             Project: Flink
          Issue Type: Improvement
            Reporter: Piotr Nowojski
            Assignee: Piotr Nowojski


To implement exactly-once sink there is a re-occurring pattern for doing it - two phase commit algorithm. It is used both in `BucketedSink` and in `Pravega` sink and it will be used in `Kafka 0.11` connector. It would be good to extract this common logic into one class, both to improve existing implementation (for exampe `Pravega`'s sink doesn't abort interrupted transactions) and to make it easier for the users to implement their own custom exactly-once sinks.



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