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

["Tzu-Li (Gordon) Tai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-7210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tzu-Li (Gordon) Tai resolved FLINK-7210.
----------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.4.0

Thanks for this contribution Piotr!

Merged to master via 62e99918a45b7215c099fbcf160d45aa02d4559e.

> 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
>          Components: Streaming Connectors
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>             Fix For: 1.4.0
>
>
> To implement exactly-once sink there is a re-occurring pattern for doing it - two phase commit algorithm. It is used both in `BucketingSink` 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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