Piotr Nowojski created FLINK-6996:
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Summary: FlinkKafkaProducer010 doesn't guarantee at-least-once
semantic
Key: FLINK-6996
URL: https://issues.apache.org/jira/browse/FLINK-6996
Project: Flink
Issue Type: Bug
Components: Kafka Connector
Affects Versions: 1.3.1, 1.2.1, 1.3.0, 1.2.0
Reporter: Piotr Nowojski
Assignee: Piotr Nowojski
FlinkKafkaProducer010 doesn't implement CheckpointedFunction interface. This
means, when it's used like a "custom operator" (option b from [the java
doc|https://ci.apache.org/projects/flink/flink-docs-master/api/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaProducer010.html])
it will not flush the data on "snapshotState" as it is supposed to.
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