[cdc] When the cdc source modifies field comments, all field comments in the existing paimon table will be set to empty.

[zhuangchong]

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Purpose

When the cdc source modifies field comments, all field comments in the existing paimon table will be set to empty.

Steps: Version 0.7, flink1.17, mysqlcdc2paimon whole database migration-action package. Modifying the comment of a field in the mysql table will cause the comments of all fields in the paimon table to be cleared.

Tests

API and Format

Documentation