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https://issues.apache.org/jira/browse/FLINK-35243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leonard Xu resolved FLINK-35243.
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Resolution: Fixed
master: 78fda8b5abb2c2fb038760e238707cc1b7d3cf18
> Carry pre-schema payload with SchemaChangeEvents
> ------------------------------------------------
>
> Key: FLINK-35243
> URL: https://issues.apache.org/jira/browse/FLINK-35243
> Project: Flink
> Issue Type: Improvement
> Components: Flink CDC
> Reporter: yux
> Assignee: yux
> Priority: Major
> Labels: pull-request-available
> Fix For: cdc-3.2.0
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Currently, Flink CDC 3.x SchemaChangeEvent provides no information about the
> previous schema state before applying changes.
> Most pipeline sources can't provide PreSchema info (because it's not recorded
> in the binlog / oplog / ...), but some pipeline sinks require it to perform
> validation checks and apply schema change. This ticket suggests adding
> framework-level support to filling pre-schema payload to any
> SchemaChangeEvent that requires such info.
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