Github user pvillard31 commented on the issue:
https://github.com/apache/nifi/pull/2021
Hi @ijokarumawak. I'm really not sure but I think that 'if' statement was
in case the file is rolling over and the new file has exactly the same content
as the one rolled over. In that case (I acknowledge that would be a very
strange edge case) we have:
``timestamp < file.lastModified() && length == file.length())``
In this case, the checksum would be the same and the boolean
``rolloverOccurred`` could be false. Again, that would be a really weird
situation and I'd say that this condition is not needed. Your change makes
sense to me especially with the issue you raised about duplicated data.
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