It is an implementation of the SPARQL evaluation on the Spark GraphX.
The method describe in this paper: G. Gombos, G. Rácz, A. Kiss: "Spar(k)ql: SPARQL evaluation method on Spark GraphX", 2016, http://ieeexplore.ieee.org/abstract/document/7592722/
The method describe in this paper: G. Gombos, A. Kiss: "P-Spar(k)ql: SPARQL evaluation method on Spark GraphX with parallel query plan", 2017, FiCloud
And available on https://github.com/ggombos/PSparkql