Github user trkurc commented on the pull request:
https://github.com/apache/nifi/pull/97#issuecomment-150826350
well, think I discovered an (unrelated) bug in the hdfs PutFile processor
that will pass a flow file on to success even if the write fails due to SASL
problems.
https://issues.apache.org/jira/browse/NIFI-1062
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