Thanks for the quick reply Andy - On 16 March 2014 20:48, Andy Seaborne <a...@apache.org> wrote: > Hi Adam, > > > On 16/03/14 18:58, Adam Retter wrote: >> >> Hi there, >> >> Firstly I would just like to say that whilst we have only been using >> Elda and Fuseki for about a year, we have until now been really very >> happy with them. Excellent stuff :-) > > > Which versions?
Fuseki 0.2.6, I did check the release notes and commit history for newer versions, but did not see any detail of bug fixes that might address this. Is it possible that it has been fixed and I just missed it? I will have to check the version of Elda tomorrow when I am in the office and get back to you. > And is this using sub-SELECTs enabled in Elda? > > IIRC that will replace the nearly 10,000 cases of UNION with the SELECT that > generated it in the first place, which is much (much) shorter. I will check tomorrow and get back to you. If we are not doing that, then that sounds very promising. > >> >> Unfortunately, today, we have a query that is generated by Elda and >> POST'ed to Fuseki (https://github.com/epimorphics/elda). The query is >> about 1.4MB! >> >> Unfortunately this query causes Fuseki to throw a >> java.lang.StackOverflowError. The only other post I found on the >> mailing list which looks similar was from 2011 >> http://markmail.org/message/pwzdrcn7lnkqra35 but there was no follow >> up to it. > > > Have you tried increasing the stack? What happens? I can certainly give that a try tomorrow as well. However, I normally try to avoid doing this, and prefer to fix the problem at it's source, otherwise I may just delays the inevitable to sometime in the future when I run with a larger query ;-) >> Unfortunately, we really need to solve this issue quickly. I am not >> opposed to getting my hands dirty in the Jena code base if someone can >> tell me what needs to be done, and support me when I have questions. >> But hopefully there is some sort of quick workaround? So then, what >> are my options chaps? >> >> You may access the stack trace here: >> https://dl.dropboxusercontent.com/u/35135948/StackOverflowError.txt >> and the query that caused the exception here: >> https://dl.dropboxusercontent.com/u/35135948/fuseki-query.txt >> Sorry for the use of DropBox, book the Apache mailing list manager >> kept rejecting my post as it was too large otherwise. >> >> Thanks Adam. >> > > Andy -- Adam Retter skype: adam.retter tweet: adamretter http://www.adamretter.org.uk
