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https://issues.apache.org/jira/browse/FLINK-29072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17636404#comment-17636404
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Yubin Li commented on FLINK-29072:
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Hi, [~qingyue] [~luoyuxia], I have implemented the feature in
https://issues.apache.org/jira/browse/FLINK-29679, it support all flink tables
including hive connector, now ci has passed and column comment displayed, would
you please give a review?
> Migrate DDL-related schema handling to the new Schema framework
> ---------------------------------------------------------------
>
> Key: FLINK-29072
> URL: https://issues.apache.org/jira/browse/FLINK-29072
> Project: Flink
> Issue Type: Technical Debt
> Components: Table SQL / API
> Affects Versions: 1.16.0
> Reporter: Jane Chan
> Priority: Major
>
> [FLIP-164|https://cwiki.apache.org/confluence/display/FLINK/FLIP-164%3A+Improve+Schema+Handling+in+Catalogs]
> introduces the new Schema framework. Yet all DDL-related functionalities
> (such as CREATE TABLE, CREATE TABLE LIKE, ALTER TABLE SET/RESET, ALTER TABLE
> ADD/DROP CONSTRAINT, SHOW CREATE TABLE, etc.) are based on the deprecated
> CatalogTableImpl and TableSchema.
> The FLIP said, "For backward compatibility, we leave Catalog#createTable and
> Catalog#alterTable untouched." Therefore, issues like FLINK-18958,
> FLINK-28690, etc., cannot be resolved. And new functionalities like ALTER
> TABLE ADD/MODIFY face a dilemma of implementing against the new framework but
> lose backward consistency.
> Fully migrating to the new framework takes a lot of effort and maybe a
> long-term plan, but at least it's the time to put it on the agenda to have a
> track.
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