The NiFi Spark Receiver itself hasn't needed a true update since before 1.x and the only deps it has is site-to-site[1]. While it would be ideal to upgrade, using the 0.x version of the NiFi Receiver doesn't preclude any blocking features (that I can think of). [1] https://github.com/apache/nifi/blob/3a7ddc6a35f143c1d4a735226fe7467a83d04583/nifi-external/nifi-spark-receiver/pom.xml ... View more

I don't agree with this answer. All AttributesToJSON would do is wrap the attribute in a JSON object and either put it to another attribute or replace the content. If the user is OK with replacing the content then EvaluateXPath with a destination of "flowfile-content" would be the best. Also it ignores the core question, how to put the value generated by EvaluateXPath to disk. ... View more

It would be much easier if you could set the Destination of EvaluateXPath to "flowfile-content". Are you able to do that? If so, do that and then you can do "PutFile" to write the content of the FlowFile to the FileSystem. ... View more

With the RouteText processor (the destination of that queue) stopped, could you try and change the destination of the connection? ... View more

Is this a cluster or standalone instance? This is an odd error that shouldn't be happening so any information about your deployment would be helpful ... View more

Adding on to @Andrew Grande's response. Auto-terminating a relationship does not itself affect scheduling at all. That said, if a FlowFile is routed to certain relationships the processor may yield itself or penalize the FlowFile. For an explanation for "yield" and "penalize" I'd suggest reading the "settings-tab" subsection of the Apache NiFi User guide[1]. For InvokeHttp, when a FlowFile is routed to the failure relationship and the processor is a source processor (no input connections) it will yield itself. If there is an input connection then it will just penalize the FlowFile. [1] https://nifi.apache.org/docs/nifi-docs/html/user-guide.html#settings-tab ... View more

Are there any errors in the minifi-app logs? ... View more