Russell,

Is there a reason you are planning your migration to 1.1.2 and not 1.2.0? There 
are a number of significant feature and bug fixes that went into 1.2.0 that 
will likely make your experience much better.


Andy LoPresto
alopre...@apache.org
alopresto.apa...@gmail.com
PGP Fingerprint: 70EC B3E5 98A6 5A3F D3C4  BACE 3C6E F65B 2F7D EF69

> On May 16, 2017, at 2:30 PM, Russell Bateman <r...@windofkeltia.com> wrote:
> 
> We're still testing our migration from 0.7.2 to 1.1.2 which is imminent. We 
> still don't know how much of this is going to have to be reconfigured. Our 
> down-streamers tend to be on the grouchy side, so we're testing to see what's 
> going to irritate them. Were it not for the magic ids, I'd feel safe writing 
> a Python script to run through their flow tarballs fixing the 
> controller-setting impedance mismatches. Who knows; maybe there will be 
> nothing to change although we know for certain of a DBConnectionPool property 
> change.
> 
> I will come back here in a few hours or tomorrow with an update on how it's 
> going. I'll try to keep the noise down because what may alarm us shouldn't be 
> a cause for alarm for everyone.
> 
> Thanks for the replies,
> 
> Russ
> 
> On 05/16/2017 02:47 PM, Michael Moser wrote:
>> Hi Russ,
>> 
>> In NiFi 1.2.0, there are 3 Reporting Tasks
>> (SiteToSiteBulletionReportingTask, SiteToSiteProvenanceReportingTask,
>> and SiteToSiteStatusReportingTask) that have the capability of using a
>> Controller Service (StandardSSLContextService).  So yes, the Global ->
>> Controller Settings has a limited set of use cases, but they are very
>> important.  This becomes even more true considering the extensibility
>> of NiFi components.  Who can predict what new reporting tasks might be
>> created to meet end user's needs, and what controller services those
>> tasks might need?
>> 
>> This is definitely high on the list of things that catch NiFi users
>> off guard, as they transition from the 0.x versions into the 1.x
>> versions.  I can say that once I got used to using the Operate Palette
>> (especially for defining controller services!) then it didn't seem as
>> bad.
>> 
>> I'll see what I can add to the 0.x to 1.0.0 Migration Guide [1] to
>> call this out specifically.
>> 
>> -- Mike
>> 
>> [1] - https://cwiki.apache.org/confluence/display/NIFI/Migration+Guidance 
>> <https://cwiki.apache.org/confluence/display/NIFI/Migration+Guidance>
>> 
>> 
>> 
>> On Tue, May 16, 2017 at 3:53 PM, Russell Bateman <r...@windofkeltia.com> 
>> <mailto:r...@windofkeltia.com> wrote:
>>> Thanks, Andrew!
>>> 
>>> (From [1]:) "This means that the service will be available to all Processors
>>> and Controller Services defined in that Process Group and below."
>>> 
>>> In my experience, this isn't true. If I create a controller via the General
>>> menu in the very root of my NiFi canvas, configure its name in Settings,
>>> calling it Jack, then I create a new process group, then configure a new
>>> processor in that group, when I try to configure to use the controller, Jack
>>> is not among the options.
>>> 
>>> In order for the statement above to be true, I have to create it via the
>>> gear icon in the Operate menu/palette.
>>> 
>>> Is this not what you see?
>>> 
>>> So, beginning sometime in 1.x, the Controller Settings option in the General
>>> menu became useless, even at the top level except for "all ReportingTasks
>>> and services defined in the Controller Settings." But, when would any
>>> reporting task or other service defined be able to benefit? Never if I'm any
>>> judge.
>>> 
>>> I think this is much more than a mere documentation issue. I wonder if
>>> removing the Controller Services... option from the General menu would not
>>> be the most important thing to do (even before documenting the gear icon in
>>> the Operate menu).
>>> 
>>> Russ
>>> 
>>> 
>>> On 05/16/2017 10:05 AM, Andrew Lim wrote:
>>> 
>>> Hi Russell,
>>> 
>>> Thanks for your question.
>>> 
>>> Yes, working with Controller Services has definitely changed in 1.x compared
>>> to 0.x NiFi.  Matt Gilman wrote a nice article about how Controller Service
>>> scoping was updated in 1.x with the introduction of Multi-Tenant
>>> Authorization and also discusses the recent improvements made in NiFi 1.2 to
>>> alleviate some of the user confusion around scoping [1].   If you would like
>>> to see further details, the parent Jira for the improvements can be found
>>> here [2].
>>> 
>>> I think there is opportunity to improve the Apache documentation we have
>>> around this functionality, so I just filed a new Jira [3].
>>> 
>>> Let us know if you have any more questions.
>>> 
>>> Thanks,
>>> 
>>> Drew
>>> 
>>> [1]
>>> https://community.hortonworks.com/articles/90259/understanding-controller-service-availability-in-a.html
>>>  
>>> <https://community.hortonworks.com/articles/90259/understanding-controller-service-availability-in-a.html>
>>> [2] https://issues.apache.org/jira/browse/NIFI-3128 
>>> <https://issues.apache.org/jira/browse/NIFI-3128>
>>> [3] https://issues.apache.org/jira/browse/NIFI-3911 
>>> <https://issues.apache.org/jira/browse/NIFI-3911>
>>> 
>>> 
>>> 
>>> On May 16, 2017, at 11:28 AM, Russell Bateman <r...@windofkeltia.com> 
>>> <mailto:r...@windofkeltia.com> wrote:
>>> 
>>> It appears to me that that, unlike what happened in NiFi 0.x, in 1.x when I
>>> look at controller services via the General menu -> Controller Services,
>>> what I see is totally different from what I see when I configure controller
>>> services for a processor.
>>> 
>>> If I use the General menu to set up my controller services, I do not see nor
>>> am I given the option of using them in particular for processors I'm
>>> configuring. Instead, I appear to get a "Process Group Configuration and a
>>> list of controller services which are not the ones I'm looking for (because
>>> when I set them up, I gave them "special" names or renamed names I could
>>> recognize apart from any other use).
>>> 
>>> Note: I'm more of a processor and controller service author than an
>>> experienced user of NiFi, so I may just be hopelessly confused.
>>> 
>>> My question is what's the point of being able to configure controller
>>> services "globally" or "generally" if you can't reach them when you need
>>> them?
>>> 
>>> Please confirm that I'm not just smoking funny weed and that this is
>>> different, in fact, from how it worked in 0.7.1.
>>> 
>>> Thanks.
>>> 
>>> 
> 

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