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From Matthew Clarke <>
Subject Re: Basic operations questions
Date Fri, 06 Nov 2015 14:22:21 GMT
    You can set file expiration on the queue. Any FlowFiles older then the
value entered will be purged by the NiFi controller.  In Future releases we
are working to make that process even easier.

    You can configure backpressure on the connections to help control disk
usage in the content_repository.  When a backpressure threshold (soft
limit) is reached the processor feeding that connection will stop until the
backpressure drops bellow the set threshold(s)


On Fri, Nov 6, 2015 at 9:12 AM, Chris Campbell <>

> I’m just getting NiFi set up in a PoC mode and I have a couple of simple
> management questions…
> 1.       Is there a way to clear out the queues? I’m finding that if I
> shut down my processors and then want to make changes to the flow, I can’t
> because there is data in the queue. I have deleted the data from the
> content_repository directory but I expect that’s not the right approach.
> 2.       Is there a way to limit the amount of storage NiFi will use? I
> am running my PoC system out of disk space and most of it seems to be used
> up in the content_repository directory.
> Thanks!

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