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https://issues.apache.org/jira/browse/FLINK-25183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17461401#comment-17461401
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Jingsong Lee commented on FLINK-25183:
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[~neighborhood] Assigned to u~
> Optimize changelog normalize for the managed table upsert mode
> --------------------------------------------------------------
>
> Key: FLINK-25183
> URL: https://issues.apache.org/jira/browse/FLINK-25183
> Project: Flink
> Issue Type: Sub-task
> Reporter: Jingsong Lee
> Assignee: Lsw_aka_laplace
> Priority: Major
> Fix For: 1.15.0
>
>
> The upsert mode of managed table preserves the complete delete message and
> avoids normalization for the following downstream operators:
> * Upsert sink: Upsert sink only requires upsert inputs without UPDATE_BEFORE.
> * Join: Join for unique inputs will store records by unique key. It can work
> without UPDATE_BEFORE.
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