[FLINK-6996] FlinkKafkaProducer010 doesn't guarantee at-least-once semantic

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.2.0, 1.2.1, 1.3.0, 1.3.1
• Fix Version/s: 1.3.2, 1.4.0
• Component/s: Connectors / Kafka
• Assignee: Piotr Nowojski
• Reporter: Piotr Nowojski
• Created: 23/Jun/17 15:05
• Updated: 02/Aug/17 07:15
• Resolved: 02/Aug/17 07:15

Description

FlinkKafkaProducer010 doesn't implement CheckpointedFunction interface. This means, when it's used like a "regular sink function" (option a from the java doc) it will not flush the data on "snapshotState" as it is supposed to.

Issue Links

• links to: GitHub Pull Request #4206
• links to: GitHub Pull Request #4456