Thanks for the info,
It would help us a lot in using neo4j for our social network website
if we can talk with the researchers involved in testing neo4j with
cassandra as backend.
Hence please let us know of them.
Greetings for neo4j team,
aliabbas
On 7/5/11, Peter Neubauer wrote:
> Hi there,
>
Thanks for the info,
It would help us a lot in using neo4j for our social network website
if we can talk with the researchers involved in testing neo4j with
cassandra as backend.
Hence please let us know of them.
Greetings for neo4j team,
aliabbas
On 7/5/11, Peter Neubauer wrote:
> Hi there,
>
Aliabbas,
the code is in the old (readonly) SVN repo and probably awefully out
of date, see https://svn.neo4j.org/laboratory/users/jawad/cassandra/
Would be great if you can give it a shot on updating and see what happens!
Cheers,
/peter neubauer
GTalk: neubauer.peter
Skype peter.neu
Aliabbas,
several customers integrate neo4j with other rdbms and nosql solutions.
For instance evident software integrates Neo4j in production with Cassandra.
And StudiVZ (imho) integrates it with mysql. There are certainly others, but
I'm
not so deeply involved in the customer architectures th
Hello,
I've just downloaded the latest stable Neo4J community edition (v1.3) and I'm
having some problems starting it up.
If I run /bin/neo4j start from the command line I get:
$ sudo bin/neo4j start
Starting Neo4j Server...
Waiting for Neo4j ServerException in thread "main"
java.lang.NoSu
yeah, harder problem than my first hunch.
sounds like plugins is the way to go for now, hopefully introduction of
non-rest protocol with same interface as embedded API in 1.5 will simplify
things in the future.
thanks
On Mon, Jul 4, 2011 at 11:07 PM, Michael Hunger <
michael.hun...@neotechnology
Alex,
which JDK are you using on which platform?
Thanks
Michael
Am 05.07.2011 um 13:15 schrieb Alex Bilbie:
> Hello,
>
> I've just downloaded the latest stable Neo4J community edition (v1.3) and I'm
> having some problems starting it up.
>
> If I run /bin/neo4j start from the command line I
Actually the opposite. We use nodes in both databases, of course, but we use
node references via properties in the *data* graph to point back to entities in
the *model* graph.
- Reply message -
From: "Aliabbas Petiwala"
Date: Tue, Jul 5, 2011 1:10 am
Subject: [Neo4j] reify links wit
Class.getCanonicalName() was added in JDK1.5, so you are most probably
picking up an older version of java on your path. Check your path to
ensure you have a 1.5+ version of java.
On 5 July 2011 21:15, Alex Bilbie wrote:
> Hello,
>
> I've just downloaded the latest stable Neo4J community edition
Can you post the output from:
$ uname -a
$ java -version
On 5 July 2011 12:15, Alex Bilbie wrote:
> Hello,
>
> I've just downloaded the latest stable Neo4J community edition (v1.3) and
> I'm having some problems starting it up.
>
> If I run /bin/neo4j start from the command line I get:
>
> $ su
You should try 1.4.M06 (out later today), it has got another wrapper so that
problem shouldn't appear.
2011/7/5 Dan North
> Can you post the output from:
>
> $ uname -a
> $ java -version
>
> On 5 July 2011 12:15, Alex Bilbie wrote:
>
> > Hello,
> >
> > I've just downloaded the latest stable Neo
Greetings fellow graphistas!
It’s been a hectic week since the the 1.4 M05 release, and during testing for
what we thought would be our General Availability (GA) release, we found a
potential corruption bug in that specific milestone.
So today we’re releasing 1.4 M06 which contains the fix and
Hi,
I have a few projects that mix and match Neo4j + (Oracle/MySQL).
Basically, its these two architectures (not necessarily for recommendation in
all projects):
http://markorodriguez.com/services/development/recommendation-system/
(see the last two diagrams).
Good luck,
Marko.
http:/
Another blog entry on the topic:
http://blog.stavi.sh/polyglot-persistence-integrating-low-latency
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Marko Rodriguez
Sent: Tuesday, July 05, 2011 10:07 AM
To: Neo4j user discussions
Su
Yet another blog entry on the topic:
http://teddziuba.com/2011/06/most-important-concept-systems-design.html
I find polyglot environments a pain. Sounds cool, but in practice, its not.
Data synchronization is difficult.
Take care,
Marko.
http://markorodriguez.com
On Jul 5, 2011, at 8:
Indeed. Though I think that the semantic web, if it ever materializes, will be
the ultimate polyglot environment. ;-)
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Marko Rodriguez
Sent: Tuesday, July 05, 2011 10:19 AM
To: Neo4j
;-)
The WebOfData/LinkedData/SemanticWeb has the biggest challenge of them all:
data set merging via entity disambiguation at the large-scale over HTTP.
Marko.
http://markorodriguez.com
On Jul 5, 2011, at 8:23 AM, Rick Bullotta wrote:
> Indeed. Though I think that the semantic web, if
Hello,
First of all, I don't know anything in java, and I'm trying to figure out if
neo4j could be usefull for my projects. If it is, I will of course learn a
bit of java so that I can use neo4j in a decent way for my needs.
I'd like to use a neo4j spatial database together with GeoServer.
For th
We use Neo4j and MySQL for our project, in the JEE environment, with
XA datasource for RDBM + Neo4j JCA connector
https://github.com/alexsmirnov/neo4j-connector that let us to
synchronize transactions between these sources. The prototype
http://www.netoprise.com is far away from production :-), bu
I have a neo4j 1.1 graph that I tried opening with 1.4M5. I had a configuration
that contained allow_store_upgrade=true:
[15] = {java.util.HashMap$Entry@12374} allow_store_upgrade -> true
key: java.lang.String = {java.lang.String@12376}"allow_store_upgrade"
value: java.lang.String = {java.lang
Can you provide a stacktrace with the exception you're getting? My gut
feeling is that it's a classpath issue. Reading the stacktrace is
tromendously helpful and will often state exactly what the problem is. And
also if you could provide the source code for it (maybe as the next step
though).
2011
My understanding is that Neo4j is wrapped with an API that allows data
consuming application to be unaware of how data is distributed across
multiple "server" nodes. Is that correct? Can someone tell me what
protocol is used between "server" nodes? Are there tools available to wrap
an existing p
Hello John,
> My understanding is that Neo4j is wrapped with an API that allows data
> consuming application to be unaware of how data is distributed across
> multiple "server" nodes. Is that correct?
No, that's not quite correct, as far as I understand your question. Neo4j uses
master-slave
Hi all,
I just pushed an initial working bundle-build to
https://github.com/neo4j/neo4j-osgi. You can see the working test in
https://github.com/neo4j/neo4j-osgi/blob/master/examples/src/test/java/org/neo4j/examples/osgi/OSGiTest.java
that waits for the Activator to instantiate and register a
Graph
Jim,
With regard to the following:
Dataset size: Terabytes and above
Strategy: Domain-specific sharding
Reasoning: At this scale, the dataset is too big for a single memory space
and it's too big to practically replicate across machines so sharding is the
only viable alternative. Howeve
Hi John,
Gotcha better now.
[snip]
> I am not sure I understand. Why do large graphs that span multiple machines
> require domain specific sharding? Assuming a not overly inter-connected set
> of shards, can't you have an intelligent query processor that partitions a
> query (passes on a subqu
Hi John,
The problem really is if your traversals crosses shards more often then you're
hit with a network hop penalty every time.
So real automatic graph sharding would also accomodate that by replicating the
relevant sub-graphs of the remote shard to the local one (keeping them in sync
as we
I am working in the electric utility industry. We have a pretty complete
ontology called the IEC Common Information Model (CIM) that is described
using OWL. We map legacy data into the CIM from many very large systems.
For instance, GIS (Geographic Information System) or EMS (Energy Management
Sy
Hi John,
I don't think you're trying to turn a screw with a hammer, but you are going to
turn this particular screw with an old-fashioned manual screwdriver rather than
an electric tool in this case.
For individual graphs (up to 32 billion nodes), neo4j is a good fit. For
managing the space be
But if I try to do a distributed join, aren't I hit with having to transfer
more data over the wire?
I am not sure if we need "auto sharding". My data is already in place in
legacy systems.
I am no expert by any means, but my understanding is that Map-reduce is for
data that is not interconn
Hi Craig,
This is awesome!
Where is the update method? I can't find the code on github.
Thanks!
On Sat, Jul 2, 2011 at 6:00 PM, Craig Taverner wrote:
> As I understand it, Andreas is working on the much more complex problem of
> updating OSM geometries. That is more complex because it involve
Seems like all versions of Neoclipse now display *all* properties on nodes,
regardless of what you configure for property names in the graph decorations
configuration dialog. This pretty much renders Neoclipse unusable. :(
___
Neo4j mailing list
User@l
Ah, I found a new configuration option hidden in a secret tiny "View Menu"
called "expanded node mode", which is on by default...turned that off and
voila, back to the wondrous purity of the old Neoclipse. ;-)
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@li
Paul,
Did you try to upgrade to 1.2, then to 1.3 and then to 1.4 before going from
the 1.1 straight to the 1.4?
Regards
2011/7/5 Paul A. Jackson
> I have a neo4j 1.1 graph that I tried opening with 1.4M5. I had a
> configuration that contained allow_store_upgrade=true:
> [15] = {java.util.Hash
From: "Alex Bilbie"abil...@lincoln.ac.uk
Sent: Tue, 05 Jul 2011 16:57:05 +0530
To: user@lists.neo4j.org
Subject: [Neo4j] Problem starting up Neo4J on Red Hat 5
Hello,
>
>I've just downloaded the latest stable Neo4J community edition (v1.3) and
I'm having some problems starting it up.
35 matches
Mail list logo
