This is most probably related to CLEREZZA-726 (see [1]). Which by the way was also created by me :-(
[1] https://issues.apache.org/jira/browse/CLEREZZA-726 Op 13-3-2013 17:31, Minto van der Sluis schreef: > Hi Folks, > > I ran into an issue is both the existing SingleTdbDatasetTcProvider and > my customized version (see CLEREZZA-736). > > How to reproduce: > 1) Have some process constantly inject new named graphs (I had a process > injecting 1000 named graphs) > 2) perform a query while 1 is still running. I used the following query: > > SELECT ?graphName WHERE { GRAPH ?graphName {} } LIMIT 10 OFFSET 0 > > 3) repeat step 2 a number of times (since the error does not always occur) > > This results in a ConcurrentModificationException (see stacktrace > below). I am not sure whether this is a Clerezza or Jena issue. > > Anyone an idea what is causing this? Or more importantly how to fix it? > > Should I create a Jira issue for this? > > Regards, > -- ir. ing. Minto van der Sluis Software innovator / renovator Xup BV Mobiel: +31 (0) 626 014541
