It is an interesting problem, kind of a limitation of these OGC HTTP
protocols I guess.

I wonder if we could generate the export via a WPS process (which provides
the idea of a long running process and "later" retrieval).

--
Jody Garnett

On 4 September 2015 at 14:46, Jim Proctor <jproc...@lclark.edu> wrote:

> Greetings - I’m running GeoServer 2.7, and have to date successfully
> downloaded an .mbtiles version of a raster file via Layer Preview only
> once—which suggests that all .mbtiles extensions are correctly installed,
> but something else is going on. In all other cases I get a 502 error (after
> one minute), which I assume is some form of timeout in this case.
>
> When I look at the log file, it appears that GeoServer is generating a
> series of 256x256 tiles, and the process simply takes too long to complete
> prior to timeout (one log download included 324 instances, taking place
> over two minutes). Is the problem simply that it is taking GeoServer too
> long to generate the .mbtiles file, and if so, what do you recommend? (I
> did e.g. purge GeoServer memory first via Server Status panel.)
>
> Btw, if you’re interested why we are doing this, we’re looking for a
> workaround for TileMill (no longer supported) to export layers in .mbtiles
> format for upload to Fulcrum survey app as offline base layers.
>
> Regards,
>
> Jim P.
>
>
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