Hello all,
I hope this question is relevant to this community. Please let me know.
The question is along the lines of how do you avoid unexpected heap issues
or garbage collection thrashing that causes 'timeouts' when handling large
graphs.
The application I am trying to write depends on ~11M
Has anyone built any well supported frameworks (and have examples) of using
neo4j 2 and mongodb together? Thanks!
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Very cool William,
Thanks for keeping us updated on your progress!
/peter
(snt)-[:frm]-(phn)
On May 30, 2014 10:40 PM, William Lyon lyo...@gmail.com wrote:
Hi Everyone-
My Week 2 progress report is available here:
https://github.com/johnymontana/neo4j/wiki/week2
This week I implemented a
Hi all,
I was wondering if there is any way to disable the http communication but
allow https access. Also, does neo4j-shell communicate remotely via http or
https? If it does via http, is there any way to switch to https?
Thank you!
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Hi there,
I use the neo4j 1.9.7 enterprise version.
Now I need to delete some graph. Following that :
START node=node(12346L)
MATCH node - [r2:FOWARD] - user - [r3] - user2
DELETE r3
WITH node,user
DELETE user
WITH node
MATCH node - [r1] - user1
DELETE r1
WITH node
DELETE node
When the data
Neo4j is a full database,
you can clean your database easiest by stopping the server, deleting the
data/graph.db directory and restarting.
Or by a cypher query like this:
MATCH (n)
OPTIONAL MATCH (n)-[r]-()
DELETE n,r
There are also some tools which support multiple neo4j databases, if you're
I typically run Neo4J behind Nginx. I have Neo4j listening to the local IP
address.
On Fri, May 30, 2014 at 7:18 PM, Chaofeng z.chaofen...@gmail.com wrote:
Hi all,
I was wondering if there is any way to disable the http communication but
allow https access. Also, does neo4j-shell
Neo4j-shell communicates via Java-RMI, you can disable the shell by setting
enable_remote_shell=false in neo4j.properties
Probably easiest to filter https by not allowing it via a firewall rule? Or
using a filter.
Michael
On Sat, May 31, 2014 at 1:18 AM, Chaofeng z.chaofen...@gmail.com wrote:
Hi All,
here is an example of the problems I am having.
graph is ~11M nodes; ~100M rels. The graph is densely connected with
outdegrees in the range 5-30.
The query below hits the heap limit quickly and thrashes the GC.
Any advice?
Regards, John
START a=node(41789), b=node(1513155)
MATCH
I think what you wanted to do was to set an upper limit?
START a=node(41789), b=node(1513155)
MATCH p=(a)-[*..2]-(b)
return p;
and perhaps even:
START a=node(41789), b=node(1513155)
MATCH p=shortestPath((a)-[*..2]-(b))
return p;
Otherwise without limits Cypher goes off for you finding all the
It depends on what you want to do with the data?
By default cypher uses BFS for path finding which will acummulate a lot of
state (backtracking).
I think you'll be much better off with the Java API and/or the
Traversal-API for your needs.
But you should be clear on how you want to process the
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