You are viewing a plain text version of this content. The canonical link for it is here.

Posted to users@jena.apache.org by Adrian Gschwend <ml...@netlabs.org> on 2021/04/08 15:25:02 UTC

Join heavy query does not return

Hi everyone,

I got a dataset of around 5 million triples where I do relatively join
heavy queries on it. It's a OLAP cube like structure that combines a
bunch of them in a view.

Fuseki never returns, we configured it with -Xmx60g. I could not find
any other options that could/should be adjusted by default, is this
still the only place to assign more memory to Fuseki?

Next step would be to check out logs & see if I see anything in there.

regards

Adrian

Re: Join heavy query does not return

Posted by Andy Seaborne <an...@apache.org>.

More heap maybe making things worse.

What's the query? Does it have a cross product or effectively a cross 
product and an ORDER BY?

     Andy



On 08/04/2021 16:25, Adrian Gschwend wrote:
> Hi everyone,
> 
> I got a dataset of around 5 million triples where I do relatively join
> heavy queries on it. It's a OLAP cube like structure that combines a
> bunch of them in a view.
> 
> Fuseki never returns, we configured it with -Xmx60g. I could not find
> any other options that could/should be adjusted by default, is this
> still the only place to assign more memory to Fuseki?
> 
> Next step would be to check out logs & see if I see anything in there.
> 
> regards
> 
> Adrian
>