Carmen You can happily use the existing Jena modules in a Hadoop environment if you wish to do so.
However there are a set of new modules under development called Elephas but these have not yet been formally released. Since these are as yet unreleased code the only way to get it is to either build yourself (from the hadoop-rdf branch of our Git repository) or to configure Maven to be able to pull in the SNAPSHOT builds (See https://jena.apache.org/download/maven.html#specifying-dependencies-on-snap shots) You can view the as yet unpublished draft documentation for these modules at http://jena.staging.apache.org/documentation/hadoop/ These modules primarily provide support for RDF as an input/output format plus provide some basic Mapper/Reducer implementations for carrying out basic tasks. However to do anything complex you will need to still write your own Mapper/Reducer implementations. There is no query engine for Hadoop included nor is one currently planned. Rob On 15/01/2015 11:51, "Carmen Manzulli" <[email protected]> wrote: >Hi, >I would like to know if is it possible to use some Jena Modules in a >cluster as hadoop 2.6.0?And also, where i can found implementation of >query >processing plan and how can i my own SELECT, GROUP BY, ect.. > >any kind of help will be much appreciated, >Carmen.
