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

• Type: New Feature
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Component/s: Command Line Client, Runtime / Checkpointing
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: Congxian Qiu
• Created: 08/May/20 08:05
• Updated: 14/Nov/21 22:38

Description

Inspired by the userMail

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