Hi Christian,
Thank you for the details. It's not immediately obvious what is
happening. I'll try to recreate your setup on my machine.
Andy
On 07/05/15 17:56, Christian Schwaderer wrote:
Hi Andy,
thanks again!
I'll try to give some details about my setup:
I run a server with openSUSE 13.1/64 bit on wich Apache Tomcat 7.0.42 runs. I
have deployed Fuseki 2.0.0 simply by putting the file fuseki.war into
/srv/tomcat/webapps/ (and started it from within the Tomcat Web Application
Manager).
My application is written in PHP, for SPARQL queries I use the ARC2 library.
On my local test machine, I've successfully set a timelimit in Fuseki.
The database there was created with TDB (which is far less convenient than the Fuseki
UI), I've started Fuseki with the parameter "--config=config.ttl". I then
tested a very time consuming SPARQL query. And well, after 4seconds, Fuseki returned the
desired timeout error.
Now, on the actual server, with Fuseki wrapped inside Tomcat, the timelimit is
not working.
For instance, this sample query:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX prop-de: <http://de.dbpedia.org/property/>
PREFIX dcterms: <http://purl.org/dc/terms/>
SELECT ?s
WHERE
{
?s prop-de:name ?all_names .
?s dcterms:subject ?category .
FILTER (regex(?all_names," ","i"))
}
takes about 50 seconds in PHP.
Hope, those details help you understand the setup.
Thanks again and in advance!
Best regards,
Christian
----------------------------------------
Date: Thu, 7 May 2015 11:35:45 +0100
From: [email protected]
To: [email protected]
Subject: Re: Fuseki as Web Application read configuration file
Hi Christian,
Something is causing the 4s to be ignored - I don't know for sure but if
you are controlling the timeouts then it does need to be addressed
because even if it's not a factor at the moment, it may well become one.
I don't have a complete picture of your setup yet.
What are the queries taking a long time? (There are places where the
timeout can be delayed.)
Andy
On 07/05/15 08:08, Christian Schwaderer wrote:
Thanks!
But before I try it, let me ask (just to make sure): Are you really sure that
this is the problem here?
As I mentioned earlier, my queries take up to 20 seconds. So, if there is a 3
seconds time limit set somewhere for my dataset - this setting is definitely
not working.
Best regards!
----------------------------------------
Date: Wed, 6 May 2015 22:25:42 +0100
From: [email protected]
To: [email protected]
Subject: Re: Fuseki as Web Application read configuration file
On 06/05/15 19:03, Christian Schwaderer wrote:
Hi,
thanks for the answer!
The full config file looks like so:
@prefix : <#> .
@prefix fuseki: <http://jena.apache.org/fuseki#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> .
[] rdf:type fuseki:Server ;
ja:context [ ja:cxtName "arq:queryTimeout" ; ja:cxtValue "4000" ] ;
.
(Comments removed)
Yes, I created the dataset with the UI. How can I remove the dataset timeout
setting?
There is a bit more in:
http://mail-archives.apache.org/mod_mbox/jena-users/201504.mbox/%3C5533D97F.20406%40apache.org%3E
but the workaround is:
The directory run/system_files has a copy of the file. This is not the
file the server works off (that's in the database).
0/ Stop the server
1/ If you have only one dataset, copy that file to
run/configuration/mydatabase.ttl (any fresh base name, must end ttl).
2/ Edit the "run/configuration" file to remove the line:
ja:context [ ja:cxtName "arq:queryTimeout" ; ja:cxtValue "3000" ] ;
or set it to whatever you want.
3/ Delete the system database
4/ Restart the server
Andy
Best,
Christian
----------------------------------------
Date: Wed, 6 May 2015 18:52:10 +0100
From: [email protected]
To: [email protected]
Subject: Re: Fuseki as Web Application read configuration file
On 06/05/15 18:44, Christian Schwaderer wrote:
Hi again,
I'm almost done setting up Fuseki as Tomcat web application. Still, there is
another problem: How can I make sure that Fuseki reads its configuration file?
I want to set a timeout (4sec) and thus, I've added the line
ja:context [ ja:cxtName "arq:queryTimeout" ; ja:cxtValue "4000" ] ;
in the file /etc/fuseki/config.ttl
But it doesn't work. Fuseki still executes queries taking about 20 seconds.
I've also copied the file config.ttl to /etc/fuseki/configuration - but to no
avail.
Thanks in advance and best regards
Christian
Hi Christian,
What's the full config file? One thing to be aware of is that it is not
set on the datatset as the more specific setting overrides the server
wide setting.
If the TDB database was created via the UI, unfortunately there is a bug
in the template for created TDB databases and it puts in a timout. It
can be removed; the server needs to be restarted.
Andy
