I haven't tried the latest RC, I believe we are using 2.14 at the moment, so I will check it out (if memory usage is improved I will do backflips).
The store is NetCDF, and in particular NetCDF aggregations using the NCML/FMRC XML formats (this prevents making use of the Direct Download feature in CSW, unfortunately). On Tue, Jan 29, 2019 at 4:28 AM Daniele Romagnoli < daniele.romagn...@geo-solutions.it> wrote: > Hi Clifford, > I have a couple of questions on your use case for some feedbacks: > 1) which GeoServer version are you using? (did you already tried with the > latest RC?) > 2) which store are you using to configure your input data? Is it a NetCDF > store OR an ImageMosaic one? > > Please, > let us know. > > On Tue, Jan 29, 2019 at 7:22 AM Clifford Harms <clifford.ha...@gmail.com> > wrote: > >> I've run into a problem with the memory footprint using the netcdf-output >> plugin with n-dimensional datasets. Consider a WCS 2.0.1 request that >> wants multiple times and elevations in netcdf format. The WCS GetCoverage >> operation slices this request into 2D slices, and loads these slices into a >> GranuleStack, which allows the netcdf output module (and presumably other >> n-dimensional output formats in the future) to stitch them back together in >> the desired format. >> >> The problem arises when the number of 2D slices are large, as they are >> completely held in memory. I'm trying to find a solution to this, to >> substantially increase the size of datasets that can be requested in netcdf >> format. >> >> My initial stab was setting up a deferred read by implementing a quick >> GridCoverage2D wrapper, that basically encapsulated all of the GetCoverage >> work and only performs the read when the image data is accessed, while >> modifying netcdf-out to work with only one slice at a time. This isn't >> working so well, because it is hard to separate the image from the rest of >> the non-pixel data related calls in the GridCoverage2D. >> >> I was curious before I went further down this route if there is a more >> obvious solution then basically extending and heavily modifying >> GridCoverage2D in addition to changing the netcdf output encoder itself, or >> utilizing some type of file buffered Image implementation. >> >> Thanks. >> >> -- >> Clifford M. Harms >> _______________________________________________ >> Geoserver-devel mailing list >> Geoserver-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/geoserver-devel >> > > > -- > Regards, > Daniele Romagnoli > == > 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 > > ------------------------------------------------------- > > Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE > 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si > precisa che ogni circostanza inerente alla presente email (il suo > contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è > riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il > messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra > operazione è illecita. Le sarei comunque grato se potesse darmene notizia. > > This email is intended only for the person or entity to which it is > addressed and may contain information that is privileged, confidential or > otherwise protected from disclosure. We remind that - as provided by > European Regulation 2016/679 “GDPR” - copying, dissemination or use of this > e-mail or the information herein by anyone other than the intended > recipient is prohibited. If you have received this email by mistake, please > notify us immediately by telephone or e-mail. > -- Clifford M. Harms
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