On Wed, Aug 17, 2011 at 6:40 AM, Gordon Keith <[email protected]> wrote:
> I'm using ImagePyramids on Geoserver 2.1.0 and am having issues with
> transperancy. Sometimes the background is transparent and sometimes white.

It's probably transparent where the pyramid does not intersect at all
the requested
tile, and white otherwise.


> In some tiles (but not all) where there is no data I get:
> Error rendering coverage on the fast
> path
> java.lang.IllegalStateException:
> Unsupported data type.
> Unsupported data type.
>
> Rendered as the tile.
>
> The same layers work fine with 1.7.6.
>
> Any suggestions before I start spending a lot of time trying to work out what
> is happening?

The 2.1.x series uses by default a faster, more scalable code path to serve
rasters called the "coverage fast path".
This code is newer and sometimes does not handle certain combinations
of bands and data types.

You should do two things:
- prepare an excerpt of your data (or the full set, if it's not big), open a bug
  report on jira.codehaus.org and attach the data set to it, or otherwise
  link to a place where you made it downloadable
- start your GeoServer adding the
-Dorg.geoserver.render.raster.direct.disable=true
  to the java virtual machine, this will disable the new fast code path
  in favor of the older one. But make sure to report the issue, with time
  this option will disappear and the fast path will become the only option

Cheers
Andrea

-- 
-------------------------------------------------------
Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead

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Italy

phone: +39 0584 962313
fax:      +39 0584 962313

http://www.geo-solutions.it
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