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From John Smith <johns0...@gmail.com>
Subject Re: GraphXGraphGenerator Usage Help
Date Tue, 10 Jan 2017 23:22:02 GMT
I can run the example, but when I try to use a live instance of accumulo
(1.8) it throws a ClassNotFoundException
DocumentIndexIntersectingIterator.java.  It seems like the
GraphxGraphGenerator is built against Accumulo 1.6.4, and even the test
doesn't seem to work if I bump it up to 1.8.  I wonder if this is an issue
with the latest version of Accumulo not being supported by Rya?  I find it
strange that Accumulo complains about not being able to find the
DocumentIndexIntersectingIterator.java class since it is a Rya class and
not an accumulo class.. do i need to install (some kind of) a Rya addon to
Accumulo for this to work?

On Mon, Jan 9, 2017 at 7:39 PM, Puja Valiyil <pujav65@gmail.com> wrote:

> Hi John,
> It's not possible to use the core Rya indices to support the graphx api--
> there is a requirement for uniqueness in vertices that is not possible to
> support using the core indices.   To support graphx efficiently, all of the
> assertions on a node of the graph must be stored on a single accumulo row
> (so you can guarantee all of the assertions will be stored on a single
> accumulo tablet).  The core Rya indices do not support this requirement,
> but the entity centric index does.
> There is a configuration parameter to enable the entity centric index.  You
> can see how to enable it by looking at the entity centric example in the
> examples project-- let me know if you have trouble finding it.
> On Monday, January 9, 2017, John Smith <johns0806@gmail.com> wrote:
> > I'm trying to use the GraphXGraphGenerator class but it is hard coded to
> > use the EntityCentricIndex table by default.  But this doesn't exist in
> Rya
> > by default.  Shouldn't this default to the SPO table?  Or perhaps even
> > better, be a configurable parameter?  What is the purpose of the
> > EntityCentricIndex ?  How do I enable it?
> >

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