[jira] [Updated] (FLINK-25217) FLIP-190: Support Version Upgrades for Table API & SQL Programs

["Flink Jira Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-25217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flink Jira Bot updated FLINK-25217:
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    Labels: pull-request-available stale-major  (was: pull-request-available)

I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help the community manage its development. I see this issues has been marked as Major but is unassigned and neither itself nor its Sub-Tasks have been updated for 60 days. I have gone ahead and added a "stale-major" to the issue". If this ticket is a Major, please either assign yourself or give an update. Afterwards, please remove the label or in 7 days the issue will be deprioritized.


> FLIP-190: Support Version Upgrades for Table API & SQL Programs
> ---------------------------------------------------------------
>
>                 Key: FLINK-25217
>                 URL: https://issues.apache.org/jira/browse/FLINK-25217
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / API, Table SQL / Planner
>            Reporter: Timo Walther
>            Priority: Major
>              Labels: pull-request-available, stale-major
>
> Nowadays, the Table & SQL API is as important to Flink as the DataStream API. It is one of the main abstractions for expressing pipelines that perform stateful stream processing. Users expect the same backwards compatibility guarantees when upgrading to a newer Flink version as with the DataStream API.
> In particular, this means:
> * once the operator topology is defined, it remains static and does not change between Flink versions, unless resulting in better performance,
> * business logic (defined using expressions and functions in queries) behaves identical as before the version upgrade,
> * the state of a Table & SQL API program can be restored from a savepoint of a previous version,
> * adding or removing stateful operators should be made possible in the DataStream API.
> The same query can remain up and running after upgrades.
> https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=191336489



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