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https://issues.apache.org/jira/browse/FLINK-24208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17414559#comment-17414559
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Austin Cawley-Edwards commented on FLINK-24208:
-----------------------------------------------

The sketch looks great [~chesnay] ! We may want to clarify the description to 
say that this is really about safely requesting a savepoint from an external 
system – the user should not care (or know) if a savepoint with the trigger ID 
has already been requested (which seems to be how you've implemented it :)).

> Allow idempotent savepoint triggering
> -------------------------------------
>
>                 Key: FLINK-24208
>                 URL: https://issues.apache.org/jira/browse/FLINK-24208
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing, Runtime / REST
>            Reporter: Robert Metzger
>            Priority: Major
>
> As a user of Flink, I want to be able to trigger a savepoint from an external 
> system in a way that I can detect if I have requested this savepoint already.
> By passing a custom ID to the savepoint request, I can check (in case of an 
> error of the original request, or the external system) if the request has 
> been made already.



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