kotarot commented on pull request #4589:
URL: https://github.com/apache/nifi/pull/4589#issuecomment-706068741
Thank you for looking at this change.
Assume that the "Bucket" property of FetchS3Object is set to "${bucket}" and
"Object Key" property is set to "${key}". If we set `bucket =
"valid-bucket-name"` and `key = "" (empty string)` in Variables in the process
group, after this change the flowfile will be routed to failure instead of
stucking as the current implementation. If a user set the failure relationship
to self-loop, changing `key = "valid-key-name"` correctly while being penalized
would fix this error, and the flowfiles would be then routed to success with
fetching an S3 object successfully. I think this is the same semantic as the
other kinds of errors, penalizing in this case also meaningful.
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