Github user mcfongtw commented on the issue: https://github.com/apache/flink/pull/4605 Hi, @zentol , thanks for reviewing this PR. I recalled that I put a [caveat ](https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/connectors/cassandra.html#checkpointing-and-fault-tolerance)about this potential data loss in the latest C* connector documents. Since this fix is committed, would you like me to open another PR just to remove that warning message from document?
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