On 26/11/14 07:12, Neubert, Joachim wrote:
I use Fuseki behind a apache reverse proxy. A query which takes about 90 seconds when put
directly to Jetty, aborts invariably after 60 seconds with an "The proxy server
received an invalid response from an upstream server. The proxy server could not handle
the request" message by apache.
In the apache config, I set all values known to me to 10 minutes:
Keepalive On
Timeout 600
ProxyTimeout 600
ProxyPass /beta/sparql/thesozv/query
http://127.0.0.1:3030/thesozv/query timeout=600 Keepalive=On
ProxyPassReverse /beta/sparql/thesozv/query
http://127.0.0.1:3030/thesozv/query
Jetty configuration is a bit a black box for me. However I found that there seems to be a
60 second default timeout in the ProxyServlet (init parameter "timeout" -
http://www.eclipse.org/jetty/documentation/current/proxy-servlet.html).
I'm not sure if this setting is involved at all, and how I could set it, or
what could be wrong otherwise. Help would be greatly appreciated.
Cheers, Joachim
Joachim,
Nothing jumps out at me. We run with a setup that allows queries longer
than 60s. We rely on the Fuseki timeout and bump other timeouts above
that so only one system is causing a timeout.
The httpd default timeout is 300s IIRC.
We don't set Keepalive=On. We don't have a ProxyPassReverse directive.
We do set max= to stop too many queries at one time.
Fuseki does not use ProxyServlet.
Aside
An AWS-ism: the load balancers default to a 60s timeout. Nowadays
(since July this year, 2014) you can increase that to 5 mins in the UI.
Andy
