Chris,

If this is a test system (which I believe you said it is) and you're okay 
losing all data in the system, you can shutdown
and delete your content and flowfile repositories (by default they are located 
at
./flowfile_repository and ./content_repository) and then restart.

Thanks
-Mark


> On Nov 12, 2015, at 8:25 AM, Christopher Hamm <ceham...@gmail.com> wrote:
> 
> that isn't clearing them out really. it gradually decreases but doesn't clear 
> out 500k items.
> 
> On Nov 12, 2015 8:22 AM, "Juan Sequeiros" <juan.sequei...@onyxpoint.com 
> <mailto:juan.sequei...@onyxpoint.com>> wrote:
> To answer Christopher,
> You can clear out flowfiles on a queue by setting expiration on relationship 
> line.
> 
> 
> On Thu, Nov 12, 2015 at 7:53 AM, Christopher Hamm <ceham...@gmail.com 
> <mailto:ceham...@gmail.com>> wrote:
> I will look, but how do I just kill it with fire. What can I delete?
> 
> On Nov 12, 2015 7:42 AM, "Mark Payne" <marka...@hotmail.com 
> <mailto:marka...@hotmail.com>> wrote:
> Chris / Elli,
> 
> What version of NiFi are you running? I am wondering if you may have been 
> bitten by
> this bug [1]. This should affect only the 'master' branch, not any formally 
> released
> versions of NiFi. If you built the application from source code, rather than 
> using an
> already-released version, this may well be what is happening.
> 
> Thanks
> -Mark
> 
> 
> [1] https://issues.apache.org/jira/browse/NIFI-1155 
> <https://issues.apache.org/jira/browse/NIFI-1155>
> 
> 
>> On Nov 12, 2015, at 2:32 AM, Christopher Hamm <em...@christopherhamm.com 
>> <mailto:em...@christopherhamm.com>> wrote:
>> 
>> where does it dump? I cant get mine to expire fast enough. It is dev test I 
>> want to blow away but cant delete.
>> 
>> On Fri, Nov 6, 2015 at 11:33 AM, Joe Witt <joe.w...@gmail.com 
>> <mailto:joe.w...@gmail.com>> wrote:
>> Elli,
>> 
>> Can you share your flow configuration that we could possibly use to
>> replicate this?  Perhaps turn this into a JIRA and attach that.
>> 
>> Also anytime you see something that appears 'stuck' please try to get
>> a stack dump (bin/nifi.sh dump)  As if there is truly a stuck thread
>> we'll see it there and what it is blocked on.
>> 
>> Thanks
>> Joe
>> 
>> On Fri, Nov 6, 2015 at 11:25 AM, Elli Schwarz <eliezer_schw...@yahoo.com 
>> <mailto:eliezer_schw...@yahoo.com>> wrote:
>> > I had a queue that built up overnight with several thousand flowfiles. The
>> > queue was pointing to a RouteOnAttribute processor, which was running. For
>> > some reason, the RouteOnAttribute processor wasn't emptying the queue so 
>> > the
>> > queue just built up. Stopping and starting the processor didn't help.
>> > However, simply restarting Nifi got the flow moving again. I can't figure
>> > out why the queue was stuck.
>> >
>> > What could cause a queue to build up like that? How would restarting Nifi
>> > get it going again? There weren't any errors in the log.  I did have
>> > backpressure on the relationship to the processor after the 
>> > RouteOnAttribute
>> > set to 1, but that queue was empty. There was no backpressure on the queue
>> > heading in to the RouteOnAttribute processor. The RouteOnAttribute 
>> > processor
>> > has a Penalty Duration and a Yield of 1 sec. The relationships all used the
>> > PriorityAttributeAnalyzer as the prioritizer.
>> >
>> > The interesting thing is I had the exact same problem on two different 
>> > nifis
>> > (one was version 0.2.0 and one 0.3.0). The same type of flow files were
>> > going from one to the other using site-to-site (I was doing this for load
>> > balancing). On the other Nifi, instead of restarting, I added another
>> > RouteOnAttribute processor and rerouted the stuck queue to the new one
>> > instead, and that also got things moving again. (I have a backpressure 
>> > since
>> > the processor after the RouteOnAttribute is a ControlRate processor, and I
>> > only want to allow 1 flowfile through per second so as not to overwhelm the
>> > system downstream. The backpressure is to assist with load balancing, so if
>> > one pathway fills up, I have the other pathway which uses the site-to-site
>> > to route the flow to the other nifi).
>> >
>> > Is there some combination of backpressure, penalty or yield along with
>> > prioritization that could cause a kind of deadlock-like situation? Any 
>> > ideas
>> > as to how I can prevent this from occurring?
>> >
>> > Thanks!
>> > -Elli
>> >
>> 
>> 
>> 
>> -- 
>> Sincerely,
>> Chris Hamm
>> (E) ceham...@gmail.com <mailto:ceham...@gmail.com>
>> (Twitter) http://twitter.com/webhamm <http://twitter.com/webhamm>
>> (Linkedin) http://www.linkedin.com/in/chrishamm 
>> <http://www.linkedin.com/in/chrishamm>
> 

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