Hi,
To further clarify, Table is provided in Gremlin 1.1+.
To check the version of Gremlin, do GremlinTokens.VERSION.
Good luck,
Marko.
http://markorodriguez.com
On Jul 6, 2011, at 8:40 PM, Michael Hunger wrote:
> Boris,
>
> I think, 1.3 uses a much older version of gremlin which didn't get
Hi Andrew,
How big is your configured Java heap? It could be that all the nodes and
relationships don't fit into the cache.
David
On Wed, Jul 6, 2011 at 8:03 PM, Andrew White wrote:
> Here is some interesting stats to consider. First, I split my nodes into
> two groups, one node with 1.4M chil
Here is some interesting stats to consider. First, I split my nodes into
two groups, one node with 1.4M children and the other with 3.4M
children. While I do see some cache warm-up improvements, the
transversal doesn't seem to scale linearly; ie the larger super-node has
2.4x more children but
I just tested with 1.4.M06 and performance seems about the same. Also,
only the supernodes are affected, the child nodes are very fast.
On 07/06/2011 09:31 AM, Michael Hunger wrote:
> Andrew,
>
> could you please also try to access the graph via the latest Milestone
> 1.4.M06 to see if things ha
Boris,
I think, 1.3 uses a much older version of gremlin which didn't get the
Table result type yet?
Please pull 1.4.M06 and try to use it there to see if it works in the current
version.
Cheers
Michael
Am 07.07.2011 um 04:34 schrieb Boris Kizelshteyn:
> Greetings! I am using stable 1.3 and
Greetings! I am using stable 1.3 and when I issue t = new Table() in the
gremlin shell I get:
- gremlin> t = new Table();
- ==> startup failed:
- ==> groovysh_evaluate: 26: unable to resolve class Table
- ==> @ line 26, column 5.
- ==>t = new Table();
What am I doing wrong?
I am on a standard filesystem (ext4). I haven't seen the issue again
today so I wonder if it was a fluke.
Andrew
On 07/06/2011 12:29 PM, Paul Bandler wrote:
>> Any hints on the memory map issue are welcomed too.
> I experienced that on Solaris when I'd placed the db on a filesystem that
> didn'
Pushed SortedTree to Git after adding a unit test and doing some debugging.
TODO:Add API for indexed relationships using SortedTree as the
implementation.Make SortedTree thread safe.
With regard to the latter issue. I am considering the following solution.
Acquire a lock (delete a non existent p
Hi Christian,
Please see http://docs.neo4j.org/chunked/1.4.M06/ha.html for info on Neo4j
HA. You can run a coordinator and a Neo4j server on the same machines.
That's a common setup. As for how to query it, answering that requires some
more explanation about how Neo4j can be run.
Neo4j can be use
Hey all,
I've been working on another PHP client for Neo4j. I think it's ready
for some real-life testing, and I'm interested to see what you all
think.
GitHub: https://github.com/jadell/Neo4jPHP
Download: https://github.com/jadell/Neo4jPHP/tarball/0.0.1-beta
Features:
- Developed against the Ne
I did not. If this is what is required then you have answered my question.
Thanks.
-Paul
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Adriano Henrique de Almeida
Sent: Tuesday, July 05, 2011 10:59 PM
To: Neo4j user discussions
Just noticed that "ls" shell reads all relationships before displaying
them... I'll fix this tomorrow.
2011/7/6 Mattias Persson
>
>
> 2011/7/6 Jim Webber
>
>> Hi Rick,
>>
>> > Are you thinking maybe of lazily loading relationships in 1.5? That
>> might be a huge boost.
>>
>> Added to the backl
2011/7/6 Jim Webber
> Hi Rick,
>
> > Are you thinking maybe of lazily loading relationships in 1.5? That
> might be a huge boost.
>
> Added to the backlog to be discussed for inclusion in 1.5.
>
Neo4j _is_ lazily loading relationships... and have done since before 1.0.
Maybe there's some issue
Hi there,
I am quite a newbie with neo4j and I hope somebody can help me.
I want to set up a Cluster with 6 Servers and a few Coordinators
(can a Server at the same time be a Coordinator?).
Theoretically the setting up of this cluster is more or less clear to me.
But the big question for me is:
H
Logs are attached. I am using the Sun 64bit HotSpot JVM (see logs). For
this particular graph I simply have a single root reference node (0) and
millions of nodes with a 1:1 relationship with the root. For all
intents, this version of the graph is like a flat table with all
elements sharing the
>Any hints on the memory map issue are welcomed too.
I experienced that on Solaris when I'd placed the db on a filesystem that
didn't support memory mapped I/o such as NFS
Sent from my iPhone
On 6 Jul 2011, at 17:48, Andrew White wrote:
> Any
> hints on the memory map issue are welcomed too.
Ok, then it is checking the connectedness which actually really traverses all
the relationships between the current and the target node.
Could you share the whole messages.log file from that graph store?
Which JVM are you running?
If you can't share the db, could you please describe the struct
When using `cd -a` it is indeed very fast. As to the logs, those where
from messages.log.
Sharing the graph-db would be tough considering I am generating this
graph off of several GB of data and my local upload is very limited. Any
hints on the memory map issue are welcomed too.
Thanks for all
Andrew,
can you by chance share you graph-db or perhaps your generator script? Then we
could evaluate that and see where the performance hit occurs.
Neo4j-shell checks the connectedness of the graph so that you can't get lost
just while navigating.
Could you try to use cd -a 1 (this does absol
Hi Rick,
> Are you thinking maybe of lazily loading relationships in 1.5? That might be
> a huge boost.
Added to the backlog to be discussed for inclusion in 1.5.
Jim
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Thanks for that Stephan,
I've dropped it into our QA backlog for the 1.4 GA release.
Jim
On 6 Jul 2011, at 12:06, Stephan Hagemann wrote:
> Hi everyone,
>
> a rather old linux installation on our build server led us to find out that
> the new start script introduced in M05 (?) does not work wi
Hi John,
> But if I try to do a distributed join, aren't I hit with having to transfer
> more data over the wire?
Yes you're right - that's one penalty of having a graph distributed. Each time
you hit a relationship that crosses a machine, the latency is way higher than
if you were traversing
Ah ha ... the reason I couldn't find it is because there is a typo ...
"udpateGeometryFromWKT" the p and d are switched :)
However, I rebuilt it but do not see this in the REST extensions after
moving everything from /target/dependency to plugins. Any thoughts?
Thanks!
On Wed, Jul 6, 2011 at 4:3
This is consistently slow. I made a graph which just goes off of the
root reference node (0) and I am seeing the following...
(0)$ cd 1
(1)$ cd 0
(0)$ cd 1
It's almost like it is scanning the entire relationship list before
actually looking up the next node. Of note I have found
Andrew,
if you upgrade to 1.4.M06, your shell should be able to do Cypher in
order to count the relationships of a node, not returning them:
start n=(1) match (n)-[r]-(x) return count(r)
and try that several times to see if cold caches are initially slowing
down things.
or something along these
Hi, Michael.
Are you thinking maybe of lazily loading relationships in 1.5? That might be a
huge boost.
Rick
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Michael Hunger
Sent: Wednesday, July 06, 2011 10:32 AM
To: Neo4j user d
Andrew,
could you please also try to access the graph via the latest Milestone 1.4.M06
to see if things have improved.
Does this behaviour only effect the supernodes or every node in your graph
(e.g. when you access, cd, ls a person-node?)
We've been discussing some changes to the initial load
Could you explain, how you "load" it into memory?
And what you do that returns null?
The graph itself has no lifecycle.
Then Graph-Entities are attached the nodes and relationships when you load (via
repositories, cypher or direct, or when you navigate along relationships) them
and allow writ
Hi, Andrew.
In general, this scenario (1 million+ relationships on a node) can be slow, but
usually only the first time you access the node. If you're only accessing the
node once in a session, then yes, it will seem sluggish. The Neoclipse issue
is probably a combination of two issues: the f
Can anyone explains me the life cycle of a graph with Neo4j spring data
graph.
I want to load multiple copies of a persisted graph in memory, but some how
the second instance returns null. Not sure if I am doing something wrong or
if this is something related to the graph lifecycle?
Any comments/
I have a graph with roughly 10M nodes. Some of these nodes are highly
connected to other nodes. For example I may have a single node with 1M+
relationships. A good analogy is a population that has a "lives-in"
relationship to a state. Now the problem...
Both neoclipse or neo4j-shell are terrib
When trying to process POSTing to batch-path of something like...
[{"id":1,
"method":"POST",
"to":"/node",
"body":{"user_properties":[]}
}]
...server fails with...
"exception" : "java.lang.RuntimeException",
"stacktrace" : [
"org.neo4j.server.rest.web.BatchOperationService.performJob(Bat
Hi everyone,
a rather old linux installation on our build server led us to find out that
the new start script introduced in M05 (?) does not work with all versions
of bash.
We got:
cruise:/virtual/hudson/hudson_home/jobs/graphdb/workspace#
/opt/neo4j/bin/neo4j start
/opt/neo4j/bin/neo4j: line 37:
The role of Zookeeper in HA in neo4j is just master election and instance
discovery. It's not involved in the actual communication between instances.
Knowing that, are your questions still valid?
2011/7/1 Brendan Cheng
> Hi,
>
> I'm very interested your HA architecture and wonder if possible to
I'd say that you can often use nodes and relationships without URIs,
although maybe some concept of IDs other than the internal ids of nodes and
relationships. Data stored in neo4j can often be seen as triples-like
statements:
(personA)--[KNOWS]-->(personB)
but that's just the simplest form...
Hi Boris,
I can see the new update method here:
https://github.com/neo4j/neo4j-spatial/blob/master/src/main/java/org/neo4j/gis/spatial/server/plugin/SpatialPlugin.java#L138
And the commit for it is here:
https://github.com/neo4j/neo4j-spatial/commit/22eaf91957a6265ef1e6923b5da572b75383b83e
Hope
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