hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Brian MacKay" <Brian.Mac...@MEDecision.com>
Subject RE: RDF Data Store on Hadoop
Date Thu, 02 Jul 2009 12:51:06 GMT
Hi Alex,

I have on several occasions, had the same consideration as you.  

"Build a Hadoop aware distributed triplestore"

And I came to the same conclusions. "Heart doesn't seem very active" or
very developed.

I don't know of any other open source triple stores using Hadoop, so
that leaves the option of developing without re-inventing the wheel.

What you may want to consider is something I have been considering.
Build a virtual triple store using Hive over Hadoop in a manner similar
to D2RQ over relational databases.



If you or anyone else is interested developing this idea into open a
source project, please contact me.


-----Original Message-----
From: Alex McLintock [mailto:alex.mclintock@gmail.com] 
Sent: Thursday, July 02, 2009 8:33 AM
To: common-user@hadoop.apache.org
Subject: RDF Data Store on Hadoop

I'm looking to build up data for an RDF Data store using Hadoop.
I could just generate lots of RDF XML files - or a big one - and feed
it into  Apache Jena..
However it seems to me that it would be best if I used a hadoop aware
distributed triplestore so that my data stayed on the data nodes.

I see that there is the Heart project ( http://rdf-proj.blogspot.com/
) but it doesnt seem very active.

Does anyone have any recommendations for a usable RDF data store which
I can use with Hadoop? Or should I consider this outside of the Hadoop
world and just put it on one machine? Is Heart "nearly there" and just
needs a helping hand?

I am tempted to bypass the RDF triplestore and role my own using hBase
but I dont want to re-invent the wheel.



_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

The information transmitted is intended only for the person or entity to 
which it is addressed and may contain confidential and/or privileged 
material. Any review, retransmission, dissemination or other use of, or 
taking of any action in reliance upon, this information by persons or 
entities other than the intended recipient is prohibited. If you received 
this message in error, please contact the sender and delete the material 
from any computer.

View raw message