Hi Lu

Once a new checkpoint is completed when restoring from a savepoint, the 
previous savepoint would be useless if you decide to restore from new 
checkpoint.
In other words, new incremental checkpoint has no relationship with older 
savepoint from which restored.

Best
Yun Tang
________________________________
From: Lu Niu <qqib...@gmail.com>
Sent: Saturday, July 18, 2020 5:48
To: user <user@flink.apache.org>
Subject: Are files in savepoint still needed after restoring if turning on 
incremental checkpointing

Hi, Flink Users

Assuming one flink job turns incremental checkpointing and restores from a 
savepoint. It runs fine for a while and commits one checkpoint and then it 
fully restarts because of one error. At this time, is it possible that the job 
still needs files in the original savepoint for recovery? If so, how to 
determine whether a savepoint is safe to delete?

Best
Lu

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