[jira] [Commented] (HUDI-4287) Optimize Flink checkpoint meta mechanism to fix mistaken pending instants

["Danny Chen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HUDI-4287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17558315#comment-17558315 ] 

Danny Chen commented on HUDI-4287:
----------------------------------

Can we give more details when the data files are deleted ?

> Optimize Flink checkpoint meta mechanism to fix mistaken pending instants
> -------------------------------------------------------------------------
>
>                 Key: HUDI-4287
>                 URL: https://issues.apache.org/jira/browse/HUDI-4287
>             Project: Apache Hudi
>          Issue Type: Bug
>          Components: flink
>            Reporter: Shizhi Chen
>            Assignee: Shizhi Chen
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 0.12.0
>
>
> CkpMetadata is introduced into flink module to reduce timeline burden, but currently its 
> mechanism lacks corresponding status for rollback instants, which may result in commit/delta commit instants deletion, and thus StreamWriteOperatorCoordinator(meta  end) and Write function(data end) will not be coordinatited correctly.
> Finally, data files  will be deleted by mistake. 
> This situation will be easy to reproduced especially when StreamWriteOperatorCoordinator schedules table services for a long time between commit and init instants after the restoring from a checkpoint.



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