Github user markap14 commented on the issue: https://github.com/apache/nifi/pull/556 @JPercivall we don't typically recommend emitting ROUTE events when routing to failure. Often times, failure is routed back to self, if for no other reason than to keep the data in the flow. We don't want to destroy provenance by continually emitting ROUTE events. This event type is intended for processors whose sole job it is to route data, such as RouteOnAttribute, RouteContent, RouteText, etc.
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