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https://issues.apache.org/jira/browse/FLINK-17571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Congxian Qiu(klion26) updated FLINK-17571:
------------------------------------------
    Description: 
Inspired by the [user 
mail|[http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Shared-Checkpoint-Cleanup-and-S3-Lifecycle-Policy-tt34965.html]|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 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}}

  was:
Inspired by the [user 
mail|[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 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}}


> 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 [user 
> mail|[http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Shared-Checkpoint-Cleanup-and-S3-Lifecycle-Policy-tt34965.html]|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 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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