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From Oleg Zhurakousky <>
Subject Re: Nothing in rabbitMQ queue from Publish AMQP processor
Date Thu, 08 Dec 2016 12:46:04 GMT
James I have not used AMQP in a while (although I am the one responsible for developing the
functionality you’re having problem with ;)), so I need to brush up a bit on some of the
administrative actions you describe (idle to active). Do i’ll get back to you, but as a
joint debug step, can you please try to make your queens explicitly active and see if behavior

Also, what version of NiFi you are using?

On Dec 8, 2016, at 7:37 AM, James McMahon <<>>

Good morning and thank you Oleg. No, no other stack traces or errors are indicated. I've got
my Publish AMQP configuration set to DEBUG for Bulletin Level.

I do get an error at the UI when I try to Start the Publish AMQP step after I have Stopped
it. It tells me "PublishAMQP[id=47f88.....744] cannot be started because it is not stopped.
Current state is STOPPING". I suspect this is a reflection of the WARN log message.

In your experience must I take some action at the RabbitMQ Management Console to change my
Exchange and Queue from Idle to Active? I believe that would happen automatically when AMQP
messages starting hitting the exchange, but I thought it best to ask. I see nothing on the
management console that alludes to enabling the exchange or the queue.


On Thu, Dec 8, 2016 at 7:24 AM, Oleg Zhurakousky <<>>

Aside from “closing” failure message, do you see any other errors or stack traces in the
Meanwhile I’ll try to dig more with what I have?


On Dec 8, 2016, at 7:13 AM, James McMahon <<>>

Hello I am trying to use a Publish AMQP step in my NiFi workflow. I generate a flow file with
random text content using Generate Flow File, and then send to a rabbitMQ Exchange named nifiAbcX
using Publish AMQP. My exchange is bound to queue AbcQ by key *.Abc.*, and my virtual host
is nifiVhost. I have established my exchange as a Topic type.

My NiFi instance and my RabbitMQ instance are co-located for development test purposes on
the same server.

It appears that my Publish AMQP does indeed generate output which it sends down the "success"
output flow path, but at the RabbitMQ Management Console I find that my Exchange and my Queue
are Idle and show no messages. My nifi log shows this Warning message: Failure while closing
target resource AMQPublisher:amqp://test@<http://test@>,
EXCHANGE:nifiAbcX,  What is this telling me? Why am I seeing no messages
posted to my rabbitMQ queue through the exchange? Thank you in advance.

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