2011/2/21 Brendan
> Hi,
>
> I want to design a system where each client has a embedded db to store only
> a subset of a master server db of all clients. Then, should I design a
> server plug in to extend the currently stateless server services to support
> transaction by simply wrap few requests
2011/2/22 J T
> Hmm, I hadn't considered the apache approach but it still kind of goes
> against the grain - perhaps i just want too much or its my innate laziness
> ... hehe ;)
>
> Its not just about data size, its more about not wanting to have to
> re-engineer/re-factor as things grow - whethe
Yup, there doesn't seem to be support for the dot notation for specifying
mapped memory. I'm not sure there ever has been either.
2011/2/22 Peter Neubauer
> Craig,
> I guess we need to put in 1200M instead?
>
> /peter
>
> On Monday, February 21, 2011, Craig Taverner wrote:
> > Hi,
> >
> > Recen
2011/2/22 Shae Griffiths
>
> Hi Mattias,
>
> >
> >Are you using multiple threads during batch insertion (not allowed b.t.w.)
> ?
> >
>
> It's only a single thread as far as I'm aware, unless the Lucene stuff is
> doing something funky under the covers.
>
> I was hoping it was common, and you coul
Hi All,
I am trying to build a non-exact search plug-in to Neo4J rest server, is
there a document or example on how to accomplish that? I checked the
get_all_nodes, I am newbie in java and my main problem is how to send the
parameters like the index name and the value to be searched for.
Thx for
Craig,
I guess we need to put in 1200M instead?
/peter
On Monday, February 21, 2011, Craig Taverner wrote:
> Hi,
>
> Recently, since Peter moved Neo4j Spatial to 1.3M02 I think, I stopped being
> able to run the Neo4j Spatial unit tests in maven. Most of them now generate
> an error like:
>
> IN
Hmm, I hadn't considered the apache approach but it still kind of goes
against the grain - perhaps i just want too much or its my innate laziness
... hehe ;)
Its not just about data size, its more about not wanting to have to
re-engineer/re-factor as things grow - whether that growth is concurrent
Hi Mattias,
>
>Are you using multiple threads during batch insertion (not allowed b.t.w.)
?
>
It's only a single thread as far as I'm aware, unless the Lucene stuff is
doing something funky under the covers.
I was hoping it was common, and you could say "oh you've forgotten this
line" but m
Hi J.T.,
of course you can have the cache sharding taken care of by the server side,
e.g. use an apache proxy for
client sticky routing, redirecting according to URL patterns etc. But that
doesn't cover your "domain".
The problem is that other than simple kv stores, where the sharding the key
>
> def performImport() {
>database.shutdown()
> val batchInserter = new MyBatchInserter
>importer.importFile(batchInserter, filename)
> importer.reIndex(database, 1000)
>batchInserter.shutdown()
> }
>
But now you are running the reIndex method on a database you previously
sh
Hi!
Do you mean moved to 1.3.M01, because I can't find any branch using
1.3.M02 yet?
/anders
2011-02-21 22:43, Craig Taverner skrev:
> Hi,
>
> Recently, since Peter moved Neo4j Spatial to 1.3M02 I think, I stopped being
> able to run the Neo4j Spatial unit tests in maven. Most of them now gene
I realise that there are different qualities that can come in to play with
the labels 'scalability' & 'performance' and I can see how your strategy
would help with some of those qualities but it relies on custom logic in the
client application to do the sharding and load spreading and doesn't addre
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> I think it is the missing call to import.reindex that is causing your
> problem.
I think so too, especially since I didn't know I had to do it. :) So now
my code looks like:
def performImport() {
database.shutdown()
val batchInserter = ne
Hi,
Recently, since Peter moved Neo4j Spatial to 1.3M02 I think, I stopped being
able to run the Neo4j Spatial unit tests in maven. Most of them now generate
an error like:
INFO: Unable to parse mapped memory[1.2] string for
/home/craig/dev/neo4j/neo4j-spatial/target/var/neo4j-db/neostore.propert
>
> Uh, I would too actually. ;) I thought that all I needed to do was
> create the SpatialDatabaseService and start grabbing layers.
Well, you can make empty layers if you want, but in order to see layers in
the database you must either import data (creates a layer) or create an
empty layer (whi
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On 02/21/2011 02:49 PM, Craig Taverner wrote:
>
> My Scala is too rusty to comment on any issues with the code, but I must
> suspect that the code for loading the layers is probably at fault. You are
> only showing the code for listing layers below, s
Hi Nolan,
My Scala is too rusty to comment on any issues with the code, but I must
suspect that the code for loading the layers is probably at fault. You are
only showing the code for listing layers below, so I would like to see the
code for loading layers before making any suggestions.
I know I
>
> I've jumped right in and am implementing a rough cut of my database
> abstraction layer for Neo4J. This brought up a couple more questions.
> The Neo4J Spatial readme shows the search query being done inside a
> transaction. Is this necessary? My reading of the wiki suggests that a
> TX is onl
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What conditions would cause there to be no layer names returned by
spatialService.getLayerNames(), and null for all calls to
spatialService.getLayer(...)?
I tweaked my test script slightly such that it dumps me into a console
so I can see how well I'v
Very nice!
On Mon, Feb 21, 2011 at 09:15, Mattias Persson
wrote:
> Pretty cool !
>
> 2011/2/21 Tobias Ivarsson
>
>> Nice stuff!
>>
>> On Mon, Feb 21, 2011 at 6:18 AM, Max De Marzi Jr. > >wrote:
>>
>> > Guys,
>> >
>> > So I ran into the Ask Ken project ( http://askken.heroku.com/ ) by
>> > Michae
2011/2/21 Mark Nijhof
> Ok perhaps I don't entirely get indexes yet:
>
> - Does the key value part need to map to an actual property_name and
> property_value of a node?
>
Doesn't need to, no
> - If the value changes then I should update the index manually? (i.e.
> delete
> the old index and c
Hi,
I want to design a system where each client has a embedded db to store only a
subset of a master server db of all clients. Then, should I design a server
plug in to extend the currently stateless server services to support
transaction by simply wrap few requests into one atomic request and
Ok perhaps I don't entirely get indexes yet:
- Does the key value part need to map to an actual property_name and
property_value of a node?
- If the value changes then I should update the index manually? (i.e. delete
the old index and create a new one).
- Are indexes the only way I can find a node
Thanks for taking the time to look over my example, Johan.
I was hoping that the batch inserter's memory costs would not be
directly linear with the volume of data inserted - sounds like it is?.
My assumption was that the indexing service was the service with the
comparatively hard task of random-
Thanks a lot. Updated to 0.8-SNAPSHOT. Strangely maven did not resolve
groovy dependence automatically. Had to add it by hand.
ScriptEngine approach works fine, Gremlin.compile(expr) does not?
I understand that it could be faster&cleaner to use groovy, but I need
to be able to pass string queries
>
> Actually, MongoDB is just geohashes AFAIK. So it works great for use
> cases like Foursquare, but only partially well for me, where I want to
> know things like the closest way to x latitude and y longitude. So
> perhaps I'm comparing apples and orangutans when comparing MongoDB to
> Neo4J.
>
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On 02/18/2011 06:00 PM, Craig Taverner wrote:
>
> Internally Neo4j Spatial is working with bounding boxes too. I have to
> assume MongoDb does also. Our RTree index is optimized for general spatial
> objects, and while it can do distance queries, I th
Hi,
outE(String) is in Gremlin 0.8-SNASPHOT, not Gremlin 0.7.
Note at the bottom of the main Wiki page: "Gremlin documentation is up to date
with the current Gremlin codebase, not with the latest Gremlin release."
I do this so its easier for me to maintain documentation. The documentation for
Dear all,
I have the following code:
ScriptEngine engine = new GremlinScriptEngineFactory().getScriptEngine();
List results = new ArrayList();
engine.getBindings(ScriptContext.ENGINE_SCOPE).put("g", getGraph());
engine.getBindings(ScriptContext.ENGINE_SCOPE).put("v", getVertex(startNode));
engine
Yup, you nailed it better than I did Rick.
Though your partition strategy might not be just "per user." For example in the
geo domain, it makes sense to route requests for particular cities to specific
nodes. It'll depend on your application how you generate your routing rules.
Jim
On 21 Feb 2
You shouldn't be confused because you got it right :)
Cheers
Michael
Am 21.02.2011 um 15:40 schrieb Rick Otten:
> Ok, I'm following this discussion, and now I'm confused.
>
> My understanding was that the (potentially very large) database is
> replicated across all instances.
>
> If someone n
Ok, I'm following this discussion, and now I'm confused.
My understanding was that the (potentially very large) database is
replicated across all instances.
If someone needed to traverse to something that wasn't cached, they'd take
a performance hit, but still be able to get to it.
I had underst
Mark,
I had a look at this and you try to inject 130M relationships with a
relationship store configured to 700M. That will not be an efficient
insert. If your relationships and data are not sorted the batch
inserter would have to unload and load blocks of data as soon as you
get over around 22M r
I just can't reproduce your problems. How are you doing backup? It looks
like (from your wrapper.log) that it's the server which somehow requests to
do the incremental backup. Aren't you doing backup of the server database?
2011/2/21 Brendan Cheng
> Tobias,
>
> Here s the stack trace and part of
Pretty cool !
2011/2/21 Tobias Ivarsson
> Nice stuff!
>
> On Mon, Feb 21, 2011 at 6:18 AM, Max De Marzi Jr. >wrote:
>
> > Guys,
> >
> > So I ran into the Ask Ken project ( http://askken.heroku.com/ ) by
> > Michael Aufreiter yesterdat, and though it was pretty awesome... so I
> > ported it to u
2011/2/20 Michael Hunger
> Yep. Just think in graph index :)
>
> To clarify: in-graph index, the "natural" index that is the graph itself.
>
> Michael
>
> Am 20.02.2011 um 22:26 schrieb Mark Nijhof:
>
> > Ah right, so I could connect via a relationship my type nodes to this
> > reference node (a
2011/2/21 Shae Griffiths
>
> Hi guys,
>
> I'm trying to use a LuceneFulltextIndexBatchInserter to index all my data
> as
> I import it, so I can search on properties other than just an ID, but it
> fairly quickly (~5 seconds) comes back with an
> "org.apache.lucene.store.LockObtainFailedException
Thanks.
On Sun, Feb 20, 2011 at 10:18 PM, Michael Hunger
wrote:
> Alfredas,
>
> very interesting ideas. I think that kind of repository would have to be
> built in your application, _but_ we should provide the building blocks so
> that you can easily put it together.
Yep. I certainly feel that
Hi Jim,
I already did it, I'm using a constant defined in the code for the DB folder
which it's the same
I used for testing things with a really simple jar.
I also tried changing the permissions for every DB file granting every kind
of permission to any kind of user (I know that's
kind of crazy bu
Hi Pablo,
This caught my eye in your stacktrace: Unable to create directory path[] for
Neo4j
Can you confirm that you have provided the right path for your database into
your Jetty app?
Jim
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Hi!
I'm having some trouble getting Neo4j DB to work from servlets in my Jetty
server.
There's no problem when I open the DB from a simple jar program file,
however when
I put the same code inside a servlet I get this exception:
org.neo4j.graphdb.TransactionFailureException: Could not create data
On Fri, Feb 18, 2011 at 2:31 PM, Tobias Ivarsson
wrote:
> I recently (yesterday) committed a new feature for Neo4j that will store
> these kinds of short strings, making Neo4j store them without having to
> involve the DynamicStringStore at all. You should see a substantial speedup
> from using t
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