Fabian Paul created FLINK-23875:
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Summary: ReducingUpsertSink can loose record during failover
Key: FLINK-23875
URL: https://issues.apache.org/jira/browse/FLINK-23875
Project: Flink
Issue Type: Bug
Components: Connectors / Kafka, Table SQL / API
Affects Versions: 1.14.0
Reporter: Fabian Paul
When trying to rework the Table API Kafka connector to make it compatible with
the new KafkaSink I noticed that currently the buffer which is used to reduce
the update-before and update-after calls is not snapshotted which can result in
data loss if the job fails while the buffer is not empty.
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