On Wed, Jun 18, 2014 at 5:14 PM, 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.
>
Right now as you say variables are shown as sub-layers. Modifying in the
imagemosaic code base (no the jdbc one, it's not multidimensional capable
afaik) I believe it might be possible
to turn these variables into a dimension, assuming everything else is
consistent (data type, resolution).
>
>
> 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.
>
That's a long time. Was it the first boot? The Netcdf needs to build a
couple of index files to speed up subsequent access to the contents, if
those are missing, it indeed takes some time to generate them. But it
should be a one time process
Cheers
Andrea
--
==
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