Hi all,
I have the following questions about Neo4j
Is it possible to inform which slave node I want to store data that it is
inserted using PUT REST interface?
Or the data is automatically sharded along the slave servers that are part
of the cluster?
Is there any way to do this in a clustered
By the way, here is my jvm setting:
java -jar -Xmx90G -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+UseNUMA
and neo4j.propertise:
neostore.nodestore.db.mapped_memory=15G
neostore.relationshipstore.db.mapped_memory=30G
neostore.propertystore.db.mapped_memory=50G
neostore.propertystore.db.strings.
Hi all,
In my research project, I partition my whole graph data into many parts,
and store each part in its own graph.db folder
then, I may load 10 or 15 graph.db into memory at the same time( new
Neo4jGraph(/path/to/graph.db) , I use blueprint api ), because I want to
traverse on these part of
No it's in 2.1
Not really an equivalent
There are some things you can do with reduce for uniqueness and path patterns
but it won't be the same
Sent from mobile device
Am 02.06.2014 um 05:01 schrieb John Fry :
> Thanks - I will take a look as this approach. Just quickly UNWIND isnt avail
> in
This is not a bad way to get a subgraph for step 1.
neo4j-sh (?)$ START a=node(448091),
b=node(6573222)
MATCH p=allshortestpaths((a)-[*..10]-(b))
return extract(n IN nodes(p)| n.title), extract(r IN rels(p)| r.weight);
yields a
Thanks - I will take a look as this approach. Just quickly UNWIND isnt
avail in 2.0.2. Is there an east equivalent?
As soon as I get some good results I will post back...
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How about something like this:
START a=node(448091), b=node(6573222)
MATCH p=allshortestpaths((a)-[*..10]-(b))
// all nodes
UNWIND nodes(p) as n
// remove duplicates
WITH distinct n
// expand
MATCH p2=(n)-[*..2]-(m)
UNWIND nodes(p) as n
WITH distinct n
LIMIT 1000
MATCH (n)-[r]-(m)
RETURN n,r,m
I think we should rather find and fix the root cause why stopping the
service via sc does make an unclean shutdown.
Michael
On Sun, Jun 1, 2014 at 11:01 PM, Jim Salmons
wrote:
> Thanks for the pointer to that technique, Chris. None of my databases ATM
> are so critical that it is a show-stoppe
I think ideally it would help if I could get the subgraph results in the
following format (i.e. basically a list of relation properties with src and
dst nodes):
+-+
| from
Thanks for the pointer to that technique, Chris. None of my databases ATM
are so critical that it is a show-stopper for me, but I figure it is good
to surface the issue in the event that others with critical needs get
bitten.
Now that I've looked at the situation a bit, too, it appears that a
Hello All,
I am looking to build the following pseudo code in Cypher:
1. find all the shortest paths between two nodes (sucessfully done - see
snippet below)
START a=node(448091), b=node(6573222)
MATCH p=allshortestpaths((a)-[*..10]-(b))
return p;
2. return a complete subgraph (inc rel propert
You can, after you've shut down the Neo4j Windows service, use neo4j-shell with
the `-path ` option to start a non-service Neo4j instance and then do a
clean shutdown with the `exit` command. You should then be able to upgrade.
I don't know why there is this problem with shutting down the Window
On Jun 1, 2014, at 07:58, Michael Hunger wrote:
> Yep, I think that your Mac's should be good enough. Fast IO is also important.
That's good to hear. I don't know about how well their I/O works. I have a
half-TB SSD I can run on, which should help. I'll certainly try things before
spending larg
After the ~64GB RAM mark, you have to start considering server-oriented
boards and builds (supermicro motherboards, etc.). If you're looking at
buying, I had a nice server built by AVADirect a couple of years ago that
I've been quite happy with. The midrange server builds they offer support
256-512
Yep, I think that your Mac's should be good enough. Fast IO is also
important. What does your property graph model look like for the YAGO2
dataset?
I'm still working on that new import tool, hope to get it into a releasable
alpha state this week.
Michael
On Sun, Jun 1, 2014 at 3:28 PM, Rich Mor
After upgrading from 2.0.3. to 2.1.1 some of my cypher queries return
errors on a specific node:
match (n)-[r]->(m) where id(n)=6620 return n
Unable to load one or more relationships from Node[6620]. This usually
happens when relationships are deleted by someone else just as we are about
to lo
On Jun 1, 2014, at 06:04, Michael Hunger wrote:
> How big is your dataset?
I'm currently playing with YAGO2s, which has ~300 million triples. I don't know
what this comes to in Neo4j terms (still trying to import it :-), but let's
assume
that we're talking about 100 million relations and 50 mill
Rich,
How big is your dataset?
Does this help?
http://maxdemarzi.com/2013/11/25/scaling-up/
Sent from mobile device
Am 01.06.2014 um 14:53 schrieb Rich Morin :
> I've been thinking about getting an economical system to experiment with
> Neo4j on large databases (eg, YAGO2s). AFAICT, having l
I've been thinking about getting an economical system to experiment with
Neo4j on large databases (eg, YAGO2s). AFAICT, having *lots* of RAM is the
high-order bit, so I've been thinking about starting with (say) 128 GB but
adding more when prices drop.
Problem is, I haven't found any single-pro
Hi,
I just released a new version of Neo4j spatial to run against Neo4j
2.1.1:
https://github.com/neo4j-contrib/m2/tree/master/releases/org/neo4j/neo4j-spatial/0.13-neo4j-2.1.1
Please note that for this release, I removed the dependency to the
graph-collection repository.
Prior to a discus
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