[jira] [Commented] (FLINK-17571) A better way to show the files used in currently checkpoints

["Congxian Qiu(klion26) (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-17571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17102356#comment-17102356 ] 

Congxian Qiu(klion26) commented on FLINK-17571:
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[~pnowojski] what do you think about this feature,  If this is valid, I think I can help to contribute it.

> A better way to show the files used in currently checkpoints
> ------------------------------------------------------------
>
>                 Key: FLINK-17571
>                 URL: https://issues.apache.org/jira/browse/FLINK-17571
>             Project: Flink
>          Issue Type: New Feature
>          Components: Runtime / Checkpointing
>            Reporter: Congxian Qiu(klion26)
>            Priority: Major
>
> Inspired by the [userMail|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Shared-Checkpoint-Cleanup-and-S3-Lifecycle-Policy-tt34965.html]
> Currently, there are [three types of directory|https://ci.apache.org/projects/flink/flink-docs-release-1.10/ops/state/checkpoints.html#directory-structure] for a checkpoint, the files in TASKOWND and EXCLUSIVE directory can be deleted safely, but users can't delete the files in the SHARED directory safely(the files may be created a long time ago).
> I think it's better to give users a better way to know which files are currently used(so the others are not used)
> maybe a command-line command such as below is ok enough to support such a feature.
> {{./bin/flink checkpoint list $checkpointDir  # list all the files used in checkpoint}}



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