Github user tzulitai commented on the issue: https://github.com/apache/flink/pull/2369 Thanks Robert for addressing my comments :) Overall, I like the new hybrid producer approach. However, I'm still curious whether or not it is possible / reasonable to drop the `FlinkKafkaProducer010Configuration` return type of invocation (b), and let both invocation methods return `FlinkKafkaProducer010` instead. So, ``` FlinkKafkaProducer010 kafka = new FlinkKafkaProducer010(...) // or FlinkKafkaProducer010 kafka = FlinkKafkaProducer010.writeToKafkaWithTimestamps(...) for timestamp support // setter config methods directly done on the FlinkKafkaProducer010 instance regardless of (a) or (b) kafka.setLogFailuresOnly(true) kafka.setFlushOnCheckpoint(true) kafka.setWriteTimestampToKafka(true) // would not have effect if original invocation method (a) was used ``` But we'll need to be bit hacky in `invokeInternal(element, elementTimestamp)`, something like only letting the given `timestamp` to `ProducerRecord` be non-null if `writeTimestampToKafka && elementTimestamp != Long.MIN_VALUE`. What do you think?
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