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https://issues.apache.org/jira/browse/FLINK-15736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17700179#comment-17700179
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Martijn Visser commented on FLINK-15736:
----------------------------------------

[~rosti-il] That comment is still relevant. I think everyone would like to be 
able to upgrade our Kryo dependency to a more recent version, especially given 
that only from Kryo 5.2.1 supports Java 17. However, a solution must be found 
so that Flink provides an upgrade mode for users who are recovering from 
savepoints which have been made with older Kryo versions. That's the 
challenging part. 

> Support Java 17 (LTS)
> ---------------------
>
>                 Key: FLINK-15736
>                 URL: https://issues.apache.org/jira/browse/FLINK-15736
>             Project: Flink
>          Issue Type: New Feature
>          Components: Build System
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>            Priority: Major
>              Labels: auto-deprioritized-major, pull-request-available, 
> stale-assigned
>
> Long-term issue for preparing Flink for Java 17.



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