Github user eliaslevy commented on a diff in the pull request:
https://github.com/apache/flink/pull/2108#discussion_r67247830
--- Diff:
flink-streaming-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaProducerBase.java
---
@@ -51,10 +54,11 @@
* Flink Sink to produce data into a Kafka topic.
*
* Please note that this producer does not have any reliability guarantees.
+ * The producer implements the checkpointed interface for allowing
synchronization on checkpoints.
--- End diff --
May want to change:
> note that this producer does not have any reliability guarantees.
to
> note that this producer provides at-least-once reliability guarantees
when checkpoints are enabled.
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