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https://issues.apache.org/jira/browse/FLINK-35257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17841582#comment-17841582
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yanghuai commented on FLINK-35257:
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if schema.change.behavior is EXCEPTION，just throw exception before
com.ververica.cdc.runtime.operators.schema.coordinator.SchemaRegistryRequestHandler#applySchemaChange
> optimize the handling of schema.change.behavior as EXCEPTION
> ------------------------------------------------------------
>
> Key: FLINK-35257
> URL: https://issues.apache.org/jira/browse/FLINK-35257
> Project: Flink
> Issue Type: Improvement
> Components: Flink CDC
> Reporter: yanghuai
> Priority: Major
>
> cdc job will throw exception when schema.change.behavior is exception，The
> data between the last checkpoint and the current DDL will not be refreshed to
> the sink, making it difficult for the task to recover this part of the data.
> if the sink will flush all data and then throw an exception. This way, the
> task only needs to recover from the DDL position on the source to ensure data
> consistency.
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