PAXQuery

In short: 
Massively Paralle Processing of XQueries
Description: 

The PAXQuery engine seamlessly parallelizes the execution of XQuery queries. By applying on-the-fly translation and optimization procedures, PAXQuery runs user queries over massive collections of XML documents in a distributed fashion. PAXQuery runs on top of Apache Flink, previously known as Stratosphere, a parallel execution platform that relies on the PACT model.

Contact: 
Jesus CAMACHO RODRIGUEZ