On Thu, Jun 19, 2014 at 1:14 AM, Weiss, Kevin <[email protected]> wrote:
> Hello all,
>
>
>
> Is there a way to consolidate netcdf files with multiple parameters into a
> single layer? We have requirements to display large amounts of model data
> from multiple sources. Currently, this involves one CoverageStore/Layer
> per unique data type. However this results in thousands of layers which
> causes the GeoServer boot very slowly. What we’d like to do is create one
> layer per model (GFS/NAM/etc) and use custom dimensions to specify the
> variable name. It doesn’t appear this is currently possible, but I figured
> I’d check here if I was just missing something. For reference, our data
> comes in as a single variable and time per netcdf file so our database
> would need to specify the correct file and variable name.
>
There are a few "nD" solutions in the codebase (using a database used to
index which file to use on disk in response to time or elevation changing).
Haver a look at:
- http://docs.geoserver.org/stable/en/user/data/raster/imagemosaicjdbc.html
- http://docs.geotools.org/stable/userguide/library/coverage/jdbc/index.html
> Alternatively, if there isn’t any way to combine the layers, is there any
> way to optimize the boot time? We currently have 5000+ layers and our last
> boot took 5673031 ms (~90 minutes). If anyone has any optimization tips or
> tricks I would greatly appreciate it.
>
Kevin has been working on optimising the JDBC catalog implementation for
large number of layers similar to what you are working with. The "catalog "
is what geoserver uses to store all the layer names and bounds.
- http://docs.geoserver.org/stable/en/user/community/jdbcconfig/index.html
- https://github.com/geoserver/geoserver/pull/592
You could ask Kevin if you can help by testing a nightly build. You may
also wish to at some of the support <http://geoserver.org/support/>
options available.
Cheers
--
Jody
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