Github user jskora commented on the issue:
https://github.com/apache/nifi/pull/252
Ok, I think I've resolved the problems. The Tika conflict was fixed by
udpating Tika and Metadata Extractor dependency versions and adjusting
ExtractImageMetadata for new attribute names in the newer parser.
I've stored my current branch on my Github branch
[NIFI-615-v2](https://github.com/jskora/nifi/tree/NIFI-615-v2). I still need
to rebase that, I probably won't be able to do that until Monday. Please take
a look if you get a chance and I'll try to get the pull updated on Monday.
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