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Posted to issues@flink.apache.org by "yux (Jira)" <ji...@apache.org> on 2024/04/26 07:39:00 UTC

[jira] [Created] (FLINK-35243) Carry pre-schema payload with SchemaChangeEvents

yux created FLINK-35243:
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             Summary: 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
             Fix For: cdc-3.2.0


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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