Tzu-Li (Gordon) Tai commented on FLINK-5728:

There was some discussion on the mailing list [1] that we do this as part of a 
major rework of the Kafka / Kinesis connectors in Flink 1.6. I'll downgrade the 
priority and reopen this in a Kafka / Kinesis connector rework umbrella issue.



> FlinkKafkaProducer should flush on checkpoint by default
> --------------------------------------------------------
>                 Key: FLINK-5728
>                 URL: https://issues.apache.org/jira/browse/FLINK-5728
>             Project: Flink
>          Issue Type: Improvement
>          Components: Kafka Connector
>            Reporter: Tzu-Li (Gordon) Tai
>            Priority: Blocker
> As discussed in FLINK-5702, it might be a good idea to let the 
> FlinkKafkaProducer flush on checkpoints by default. Currently, it is disabled 
> by default.
> It's a very simple change, but we should think about whether or not we want 
> to break user behaviour, or have proper usage migration.

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