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https://issues.apache.org/jira/browse/FLINK-39019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18056148#comment-18056148
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Leonard Xu commented on FLINK-39019:
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Pretty reasonable [~suhwan] , assigned this ticket to you
> [Iceberg] Support deletion vectors for format-version 3 tables
> --------------------------------------------------------------
>
> Key: FLINK-39019
> URL: https://issues.apache.org/jira/browse/FLINK-39019
> Project: Flink
> Issue Type: New Feature
> Components: Flink CDC
> Reporter: suhwan
> Priority: Not a Priority
> Labels: iceberg
>
> *Summary*
> Implement deletion vector support in Flink CDC Iceberg connector to leverage
> format-version 3 performance benefits for CDC workloads.
>
> *Content*
> [https://iceberg.apache.org/spec/#deletion-vectors]
> Iceberg format-version 3 introduces binary deletion vectors which replace
> positional delete files with compact bitmaps stored in Puffin files
> (Current implementation uses equality delete files via
> `RowDataTaskWriterFactory`)
>
> In most case (especially CDC), deletion vector is more efficient than
> positional delete files
> (I refered
> [https://opensource.googleblog.com/2025/08/whats-new-in-iceberg-v3.html,]
> [https://www.dremio.com/blog/apache-iceberg-v3/] )
>
> *Proposed Changes*
> # Check `table.properties().get("format-version")`
> ## For v3 tables with id fields -> use deletion vector
> ## etc tables -> use equality delete files
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