A few suggestions: 1. Clone from the latest development branch, not the Master. What you have, commit e6be84 , is from early December. https://github.com/apache/incubator-rya/tree/develop
2. Look at the Virtual machine set-up matching versions and the special Rya pre-built for the VM. https://github.com/apache/incubator-rya/tree/develop/extras/vagrantExample/src/main/vagrant 3. Try your data and queries with the VM and see if it gives the same behavior. The link above has complete setup instructions with a Vagrant script. Sorry I don't have a specific answer for this odd behavior. Hopefully someone else will have some more insight! david lotts. -----Original Message----- From: Adina Crainiceanu [mailto:[email protected]] Sent: Friday, March 25, 2016 5:40 PM To: Damien Graux <[email protected]>; [email protected] Cc: Roshan Punnoose <[email protected]>; David Rapp <[email protected]>; [email protected]; Louis Jachiet <[email protected]>; Pierre Geneves <[email protected]>; Nabil Layaïda <[email protected]> Subject: Re: [RYA] Troubles with running RYA on LUBM (empty answers) Hi Damien, Thanks for the interest in Rya and for trying to include it in your study. I'm not sure why you have the problems. I cc-ed the Rya developers list (Rya is now an Apache incubator project) and hopefully someone has an idea. Rya team - did anyone run into this kind of problems? Any suggestions? Thank you, Adina On Fri, Mar 25, 2016 at 9:55 AM, Damien Graux <[email protected]> wrote: > Hi, > > I am PhD student at Inria (France) and I am working with my team on > SPARQL query evaluators. More specifically, we are benchmarking a > bunch of them and we are trying to include RYA (see below for versions and > system used). > > Currently, we are trying the run LUBM benchmark (as in " Rya: A > Scalable RDF Triple Store for the Clouds" 2012) but we have problems. > We pinpointed it to at least one specific problem, on some queries > (e.g. Q14) RYA always answer a list of empty elements ("[] [] [] …") > whatever the dataset used (we tried LUBM1, LUBM1k and LUBM10k). It > seams that RYA gives the correct number of answers but they are not supposed > to be empty. > > We tried our best to solve this mystery but without success so we come > to your help so we can include RYA in upcoming our paper. Do you have > an idea where this might come from or can you redirect us towards > someone in charge of maintaining RYA? > > > We installed RYA 0.0.1 version : > commit e6be84a407e05c66cb4b4b6ef225d7e07dd10fcf > Author: Aaron Mihalik <[email protected]> <[email protected]> > Date: Fri Dec 4 20:25:51 2015 -0500 > > Rya is running on Cloudera 5.5.0 with Apache Accumulo 1.6. Everything > runs on a cluster with the default configuration over 10 nodes (1 of > primary & secondary named nodes) and each VM has 16 GB of ram, 4 TB of > disk and 4 CPU (more than enough for what is needed). > We did not activate the batch planner and followed the github > installation guide. > > Thank you in advance for any help you can provide, > > Warm Regards, > -- > Damien Graux > -- Dr. Adina Crainiceanu https://urldefense.proofpoint.com/v2/url?u=http-3A__www.usna.edu_Users_cs_adina_&d=BQIFaQ&c=Nwf-pp4xtYRe0sCRVM8_LWH54joYF7EKmrYIdfxIq10&r=ruy1rriFBFoeOJvvQWwN1h8AcdSNT3EVLrdVl7pr-iA&m=2DTepSIs9nqHEIiOgjlSmkEpvbMNZ3UKQtoUx8xo0DY&s=jFpcJ7ob-FlHaiBYKk1n5mdcrntukAbvRvbRH7wkPoM&e=
