[Zoo-discuss] BufferPy problem

Sun Dec 23 03:01:36 PST 2012

Hi Farkas,
I guess that the issue doesn't come from the ZOO-Kernel itself but from the configuration of your web server which return a timeout.

It should simply mean that the web server consider that the ZOO-Kernel took too much time to handle the request. Which may be the case when you are using huge dataset. You should take a look into your web server configuration to fix this issue.

Hope you can confirm that the issue can be solved by setting longer timeout limit in your webserver configuration.
Best regards,

Gérald Fenoy
gerald.fenoy at geolabs.fr

Le 20 déc. 2012 à 21:52, Farkas H <farkas.dus at gmail.com> a écrit :

> Hi everyone,
> 
> this http-Post buffer request [1] (BufferPy, buffers around features
> from layer topp:tasmania_water_bodies, 7 features) works.
> If I change the layer to topp:states (49 features) the request doesn't
> work [2]. You find the error message here [3].
> If I buffer just one feature from the states layer the request works
> [4]. Every single feature works.
> 
> I've noticed this behavior in other layers. One feature works the
> whole layer doesn't work.
> It looks like that the request from a certain number of objects does
> not work anymore.
> 
> What's wrong?
> 
> I appreciate any advice.
> 
> Regards,
> Farkas
> 
> [1]
> <wps:Execute service="WPS" version="1.0.0"
> xmlns:wps="http://www.opengis.net/wps/1.0.0"
> xmlns:ows="http://www.opengis.net/ows/1.1"
> xmlns:xlink="http://www.w3.org/1999/xlink"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://www.opengis.net/wps/1.0.0
> http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd">
> <ows:Identifier>BufferPy</ows:Identifier>
> <wps:DataInputs>
> <wps:Input>
> <ows:Identifier>InputPolygon</ows:Identifier>
> <ows:Title>water bodies</ows:Title>
> <wps:Reference xlink:href="http://demo.opengeo.org/geoserver/ows?Request=GetFeature&Service=WFS&Version=1.0.0&Typename=topp:tasmania_water_bodies"/>
> </wps:Input>
> <wps:Input>
> <ows:Identifier>BufferDistance</ows:Identifier>
> <ows:Title>Emergency area.</ows:Title>
> <wps:Data>
> <wps:LiteralData>0.01</wps:LiteralData>
> </wps:Data>
> </wps:Input>
> </wps:DataInputs>
> <wps:ResponseForm>
> <wps:ResponseDocument storeExecuteResponse="false">
> <wps:Output asReference="true">
> <ows:Identifier>Result</ows:Identifier>
> </wps:Output>
> </wps:ResponseDocument>
> </wps:ResponseForm>
> </wps:Execute>
> 
> [2]
> ...
> <wps:Reference xlink:href="http:...;Typename=topp:states"/>
> ...
> 
> [3]
> <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
> <html><head>
> <title>504 Gateway Time-out</title>
> </head><body>
> <h1>Gateway Time-out</h1>
> <p>The gateway did not receive a timely response
> from the upstream server or application.</p>
> </body></html>
> 
> [4]
> ...
> <wps:Reference xlink:href="http:...;Typename=topp:states&FeatureID=states.1"/>
> ...
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