[jira] [Commented] (FLINK-26985) With legacy restore mode, incremantal checkpoints would be deleted by mistake

["Yun Tang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-26985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17515852#comment-17515852 ] 

Yun Tang commented on FLINK-26985:
----------------------------------

I think this error is caused by the refactoring introduced in FLINK-24611, [~roman] would you please take a look?

> With legacy restore mode, incremantal checkpoints would be deleted by mistake
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-26985
>                 URL: https://issues.apache.org/jira/browse/FLINK-26985
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.15.0
>            Reporter: Yun Tang
>            Priority: Blocker
>
> Before flink-1.15, the restored checkpoint would be regsiterd and not discard on subsume, which means the restored incremental checkpoint would have one more reference counting to avoid discard.
> However, after state registry refactored, we could delete artificats in the restored incremental checkpoint with legacy restore mode.
> The error could be reproduced via {{ResumeCheckpointManuallyITCase#testExternalizedIncrementalRocksDBCheckpointsStandalone}} in my [local branch|https://github.com/Myasuka/flink/tree/legacy-error].



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