Austin Cawley-Edwards created FLINK-24275:
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Summary: Allow idempotent job cancellation
Key: FLINK-24275
URL: https://issues.apache.org/jira/browse/FLINK-24275
Project: Flink
Issue Type: Improvement
Components: Runtime / REST
Reporter: Austin Cawley-Edwards
As a user of Flink, I want to be able to cancel a job from an external system
in a fault-tolerant way without guessing if the job has already been cancelled.
Currently, the cancel endpoint (PATCH /jobs/:jobid?mode=cancel) will return a
404 if the job is already cancelled. This makes it hard to detect if the job
truly doesn't exist, or if it is already in the desired state.
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