I'm building an application where queries will fall reasonably distinctly
into record retrieval and graph queries. I'd ideally like to store all of
my data in a single Neo4J instance, but I'm concerned about scalability and
ease of redeployment when we push updated software. SQL and document
da
Hi again,
I have another question about indexing,
Will these two kinds of indexing work the same (I mean is the way they
index the schema the same?)?:
JAVA API:
IndexDefinition indexDefinition;
try ( Transaction tx = graphDb.beginTx() )
{
Schema schema = graphDb.schema();
indexDefinition
Hi,
I think you'll need to edit the '/etc/init.d/neo4j-service' script, as it
doesn't seem to have a way to override NEO4J_INSTANCE. Not sure what
version you are using, etc, so can't help you much further.
Feel free to raise a GitHub issue when you have more detail, so this can be
fixed in a fu
Hi Guys,
I was doing some experiments in the db and now have removed all the nodes.
But the node labels still show up in web ui and you can click them. Is
there anyway to get rid of them?
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Hi,
I am trying to figure out how to efficiently calculate the number of
distinct triangles in a undirected sub-graph.
For example number of triangles in a users graph which include him and his
friends.
Count should include triangles including user
(me)-[:KNOWS]-(a)-[:KNOWS]-(b) but also (c)-[:
MERGE without arrows were added and will be available in the next release.
Until then try to replace that last merge with CREATE UNIQUE
Michael
Am 20.02.2014 um 23:30 schrieb Ben Titmarsh :
> I'd bluffed myself into thinking that I'd solved this but actually I hadn't.
> This is my cypher:
>
Well regardless, getting a dump from a db that with shut down cleanly
worked for me. I am certain that both versions are using 2.0.0 but I agree
that it's odd that the stack trace mentions 1.9.5. Thanks for your help.
On Thursday, February 20, 2014 7:12:15 PM UTC, Chris Vest wrote:
>
> Okay, s
I'd bluffed myself into thinking that I'd solved this but actually I
hadn't. This is my cypher:
MATCH (fromCard:Card { name: {fromCardName}}),(toCard:Card{ name:
{toCardName}})
MERGE (fromCard:Card)-[r:DECK_INCIDENCE]->(toCard:Card)
SET r.passCount = coalesce(r.passCount, 0) +1
For each pair o
Hi all,
thanks for your comments and encouragements.
Jim -- you seem to be reading a lot into who I am and what I do. I merely
deleted the post because it indadvertedly included my full name and I was
not able to edit it. My approach to sociology is mostly qualitative and my
current focus on Arab
Hi Erik and Jean,
+1 to you both. Sadly, judging by the deletion of the post that prompted my
reply, I think our community is more willing to help Jean-Baptiste than he
is willing to learn. There's that old saying about horses and water that
seems to ring true here.
And congrats Erik on your c
Dear all,
I'm a newbie to neo4j and I am having a issue setting default location of
the database.
1. The default is /var/lib/neo4j while I want it to be at /data/neo4j.
2. I can change /etc/neo4j/neo4j-server.properties to let neo4j write data
to /data/neo4j
3. But I cannot remove /var/lib/neo4
I imported http://blog.bruggen.com/2013/10/same-csv-files-different-neo4j-database.html";>last.fm
dataset in neo4j 2.0.1. I want to traverse the graph starting from node
index:101 and follow the relatioships : 101->logs->features.
In MySQL i am trying to execute the query is as follow:
Jean-Baptiste, I recently did an MA project using neo4j (graphing
characters and elements of a video game), and I don't have much of a
background in programming (I got my BA in rhetoric and poetry). I started
my MA project using Neoclipse, but I found that even with a fairly small
graph, things
OK, upon Dan Greene's advise, here is some of the code I used to make the
database. This is only a small subset of the nodes and relationships.
CREATE (blor:Body_Location_or_Region:Anatomy:ANAT:UMLS{STY_RL:'Body
Location or Region',RT:'STY',UI:'T029',STN_RTN :'A2.1.5.2',EX :0,NH :'Y'})
CREATE
Okay, so you copied a 2.0.0 store, but the stack trace reveals that all your
jar files are for version 1.9.5.
Obviously 1.9.5 don't know how to deal with a 2.0.0 store.
--
Chris Vest
System Engineer, Neo Technology
[ skype: mr.chrisvest, twitter: chvest ]
On 20 Feb 2014, at 17:08, Ben Titmarsh
I am relatively new to Neo4j and I am trying to update specific nodes.
I have a .txt file with 10K node names. I also have a neo4j graph db that
carries 4M nodes and contains these 10K nodes. I want to traverse the graph
db and update a property (i.e. present or not) on each node when there is
On Thursday, February 20, 2014 12:36:12 AM UTC-8, Wes Freeman wrote:
>
> On Wednesday, February 19, 2014 6:12:19 PM UTC-8, David Erickson wrote:
>>>
>>> Thanks for the response Max, unfortunately our expectation is that 1600
>>> vertices/s of writing capability is a few orders of magnitude below
uggg dumb mistake, I was inputting into the query a StringBuilder not a
String.
On Thu, Feb 20, 2014 at 10:50 AM, Alex Frieden wrote:
> I have tested a simple version of http hitting the cypher rest endpoint
> and it works. I a doing a more complicated one now: I am getting back this
> value f
Well this is the odd thing, the live instance is running on 2.0.0 so it
shouldn't even require an upgrade..?
On Thursday, February 20, 2014 4:06:35 PM UTC, Chris Vest wrote:
>
> Since you copied it form a running 1.9.5 instance, you could put it in a
> local 1.9.5, start it up and let it do reco
Since you copied it form a running 1.9.5 instance, you could put it in a local
1.9.5, start it up and let it do recovery on the store, then shut that down
cleanly, and then copy the clean store to 2.0.1 for upgrading.
--
Chris Vest
System Engineer, Neo Technology
[ skype: mr.chrisvest, twitter:
Ah that could well be the problem! I've asked my live db admin for a new
dump from a cleanly shutdown instance. In the mean time is it possible for
me to twiddle a file anywhere to use the version that I've been given
(presumably from a running instance)?
On Thursday, February 20, 2014 3:37:3
I have tested a simple version of http hitting the cypher rest endpoint and
it works. I a doing a more complicated one now: I am getting back this
value from the endpoint:
fail![status:500, statusText:Server Error,
headers:[[Content-Type:text/html; charset=ISO-8859-1],
[Cache-Control:must-rev
Neo4j cannot upgrade stores that have not been cleanly shut down, because the
store recovery mechanism is version specific. Could that be the problem?
--
Chris Vest
System Engineer, Neo Technology
[ skype: mr.chrisvest, twitter: chvest ]
On 20 Feb 2014, at 15:48, Ben Titmarsh wrote:
> Hi Guys
Hi Guys,
I've been running by Neo 2.0.0 server fine locally until I replaced the
graph.db folder with a dump from my live app (also running 2.0.0) since
then when try to start the server with neo4j console I get:
WARNING: Max 256 open files allowed, minimum of 40 000 recommended. See the
Neo4j
Yep, true.
Craig, Peter and I have still planned to upgrade Neo4j spatial to use
batch-inserter for high volume ingestion thoughout but haven't gotten around to
actually do the work.
So right now you'll have to use the transactional APIs.
> java.lang.NoSuchMethodError
Is almost always an versi
I think the batch-importer only adds luncene indices and is not ready to
accept the "spatial" index type with lat/lon fields. It throws NPE in neo4j
unsafe package code. When I attempted to do the usual way by creating a
GraphDatabaseService after the batch-importer has issued a finish() call
i
Thanks Peter!
Cheers,
Pablo
On Thu, Feb 20, 2014 at 10:56 AM, Peter Neubauer <
peter.neuba...@neotechnology.com> wrote:
> Answered there,
> Thanks Pablo for reaching out!
>
> /peter
>
> (snt)-[:frm]->(phn)
> On Feb 20, 2014 10:21 AM, "Pablo Pareja" wrote:
>
>> Hi everyone,
>>
>> I just posted
Answered there,
Thanks Pablo for reaching out!
/peter
(snt)-[:frm]->(phn)
On Feb 20, 2014 10:21 AM, "Pablo Pareja" wrote:
> Hi everyone,
>
> I just posted this question at stackoverflow:
>
>
> http://stackoverflow.com/questions/21903263/how-can-i-convert-a-neo4j-node-to-a-blueprints-vertex
>
>
Hi everyone,
I just posted this question at stackoverflow:
http://stackoverflow.com/questions/21903263/how-can-i-convert-a-neo4j-node-to-a-blueprints-vertex
Any help would be deeply appreciated! ;)
Cheers,
Pablo
--
Pablo Pareja Tobes
My site http://about.me/pablopareja
LinkedInhttp:
Sorry my bad that was 1 node and 1 relationship per round, with plain nodes
it's 400k nodes per second.
> 120k-150k (node+rel pairs) per second with 1 thread and 150k/s with 4 threads
Am 20.02.2014 um 09:38 schrieb Michael Hunger
:
> Hi Nikhil,
>
> I've escalated your findings to our engineer
Hi Nikhil,
I've escalated your findings to our engineering team. They'll look into it and
most likely make improvements in the next releases.
Btw the order of magnitude is
120k-150k nodes per second with 1 thread and 150k/s with 4 threads
Michael
Sent from mobile device
Am 20.02.2014 um 08:0
>
> On Wednesday, February 19, 2014 6:12:19 PM UTC-8, David Erickson wrote:
>>
>> Thanks for the response Max, unfortunately our expectation is that 1600
>> vertices/s of writing capability is a few orders of magnitude below what we
>> expect/need. Probably your benchmark also has a lot of overhea
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