Hi Kevin,
I have already fixed that on master a couple of days ago.
I have also created the pull request containing the backport to 2.8.x but
it's failing on travis (tests). I didn't investigated on that failure yet
but I think it's unrelated with my changes.

I will check it again tomorrow to see if I can backport that and close the
ticket.
Cheers,
Daniele

On Thu, Feb 11, 2016 at 6:03 PM, kweis...@harris.com <kweis...@harris.com>
wrote:

> Hi Daniele,
> I got finally got a chance to look into the NetCDF Output code.  It
> appears the issue is due to the writer being created before the parseParams
> call in the NetCDFOutputManager constructor.  The private attribute
> “compressionLevel” is defaulted to “0” during instantiation and then used
> in the getWriter call.  However the “parseParams” call which immediately
> follows the creation of the writer object is where the system configuration
> is read and the “compressionLevel” value is properly set.
>
> I see you created a bug ticket.  I’ll add a comment with my findings.
>
> Thanks,
>
> Kevin M. Weiss
> Software Engineer
> CRITICAL NETWORKS / HARRIS CORPORATION
> harris.com  / kevin.we...@harris.com
>
>
> From: dany.geoto...@gmail.com [mailto:dany.geoto...@gmail.com] On Behalf
> Of Daniele Romagnoli
> Sent: Wednesday, February 03, 2016 11:38 AM
> To: Weiss, Kevin <kweis...@harris.com>
> Cc: geoserver-users@lists.sourceforge.net
> Subject: Re: [Geoserver-users] NetCDF Compression Settings
>
> Hi Kevin,
> We had this working when specifying NetCDF4-classic output format.
> I will check that in the next days looking for any regression occurred in
> the meantime.
>
> Cheers,
> Daniele
>
> On Wed, Feb 3, 2016 at 3:51 PM, kweis...@harris.com <kweis...@harris.com>
> wrote:
> Hello,
>
> Sorry for posting this twice, but I think my first attempt was hidden due
> to Outlook's preference of sending HTML mail.
>
> I'm trying to enable NetCDF compression via the NetCDF Output plugin in
> GeoServer 2.8.1.  I have set a compression value (5) in both the individual
> layer settings as well as the global settings; however, all WCS 2.0.1
> NetCDF4-Classic responses appear to be the uncompressed file size.
>
> I believe I have verified that they are uncompressed by running the
> following command:
> `ncdump -h -s <netcdf file> | grep DeflateLevel`
>
> Sample files which are known to be compressed respond with their
> compression level, but the GeoServer responses do not display anything.
>
> Is there a step I could be missing to enable compression?  Has anyone else
> gotten this working?
>
> Thanks,
>
> Kevin M. Weiss
> Software Engineer
> CRITICAL NETWORKS / HARRIS CORPORATION
> harris.com  / kevin.we...@harris.com
>
>
>
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> --
> ==
> GeoServer Professional Services from the experts! Visit
> http://goo.gl/it488V for more information.
> ==
>
> Ing. Daniele Romagnoli
> Senior Software Engineer
>
> GeoSolutions S.A.S.
> Via di Montramito 3/A
> 55054  Massarosa (LU)
> Italy
> phone: +39 0584 962313
> fax:      +39 0584 1660272
>
> http://www.geo-solutions.it
> http://twitter.com/geosolutions_it
>
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-- 
==
GeoServer Professional Services from the experts! Visit
http://goo.gl/it488V for more information.
==

Ing. Daniele Romagnoli
Senior Software Engineer

GeoSolutions S.A.S.
Via di Montramito 3/A
55054  Massarosa (LU)
Italy
phone: +39 0584 962313
fax:      +39 0584 1660272

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

*AVVERTENZE AI SENSI DEL D.Lgs. 196/2003*

Le informazioni contenute in questo messaggio di posta elettronica e/o
nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il
loro utilizzo è consentito esclusivamente al destinatario del messaggio,
per le finalità indicate nel messaggio stesso. Qualora riceviate questo
messaggio senza esserne il destinatario, Vi preghiamo cortesemente di
darcene notizia via e-mail e di procedere alla distruzione del messaggio
stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso,
divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od
utilizzarlo per finalità diverse, costituisce comportamento contrario ai
principi dettati dal D.Lgs. 196/2003.



The information in this message and/or attachments, is intended solely for
the attention and use of the named addressee(s) and may be confidential or
proprietary in nature or covered by the provisions of privacy act
(Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection
Code).Any use not in accord with its purpose, any disclosure, reproduction,
copying, distribution, or either dissemination, either whole or partial, is
strictly forbidden except previous formal approval of the named
addressee(s). If you are not the intended recipient, please contact
immediately the sender by telephone, fax or e-mail and delete the
information in this message that has been received in error. The sender
does not give any warranty or accept liability as the content, accuracy or
completeness of sent messages and accepts no responsibility  for changes
made after they were sent or for other risks which arise as a result of
e-mail transmission, viruses, etc.
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