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https://issues.apache.org/jira/browse/FLINK-24079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17407261#comment-17407261
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Fabian Paul commented on FLINK-24079:
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[~jark] do you have time to pick it up or know someone who can help with this?
> BufferedUpsertSinkFunction can loose records during failover
> ------------------------------------------------------------
>
> Key: FLINK-24079
> URL: https://issues.apache.org/jira/browse/FLINK-24079
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka, Table SQL / Ecosystem
> Affects Versions: 1.13.2
> Reporter: Fabian Paul
> Priority: Major
>
> The internally used buffer is not snapshotted on checkpoint which can lead to
> loosing on failure. We need to snapshot the buffer similarly to FLINK-23875.
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