Comment Comment by yamrzou Apache Flink does provide end-to-end exactly-once guarantees when coupled with data sources and data sinks that participate in its checkpointing mechanism. See:- An Overview of End-to-End Exactly-Once Processing in Apache Flink (with Apache Kafka, too!) — https://flink.apache.org/2018/02/28/an-overview-of-end-to-en...- Flink's Fault Tolerance Guarantees — https://nightlies.apache.org/flink/flink-docs-release-1.20/d... parent yamrzou 2 years ago
- An Overview of End-to-End Exactly-Once Processing in Apache Flink (with Apache Kafka, too!) — https://flink.apache.org/2018/02/28/an-overview-of-end-to-en...
- Flink's Fault Tolerance Guarantees — https://nightlies.apache.org/flink/flink-docs-release-1.20/d...