Re: [Neo4j] IndexedRelationship some observations and questions

Bryce, On Fri, Sep 2, 2011 at 1:44 AM, Bryce wrote: > Hi, > > I have been looking at performance options for Neo4j as presently I have > been observing a number of performance issues. I am still investigating > the > way to get the best performance out of what I am doing, and one thing it > mig

[Neo4j] REST batch completes with error code

I'm sending a batch REST request, with 15000 operations (1 create nodes, and 5000 create relationships between those nodes.) In webadmin, I can see all the nodes and relationships have been created, and I can browse them using the data browser. So the all my entities were successfully created

[Neo4j] IndexedRelationship some observations and questions

Hi, I have been looking at performance options for Neo4j as presently I have been observing a number of performance issues. I am still investigating the way to get the best performance out of what I am doing, and one thing it might be are longer running transactions stopping other work going on (

Re: [Neo4j] 10 questions

Thanks! The Matrix example I was referring to http://docs.neo4j.org/chunked/stable/indexing-add.html Sent from my iPad On 1 Sep 2011, at 21:21, Peter Neubauer wrote: > Hi there, > would love to answer but had no time today, will try tomorrow. Also, very > valid points about the docs, will try

Re: [Neo4j] 10 questions

Hi there, would love to answer but had no time today, will try tomorrow. Also, very valid points about the docs, will try to put as much of the answers into the docs as possible. What Matrix example are you looking at? Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer

Re: [Neo4j] 10 questions

anyone show some love ;) seriously, the product is great but not the documentation. e.g. about the general rule for choosing property or relationship: in the matrix example, the year of a movie should be modelled as relationship since every year lots of movies are produced. -- View this message i

Re: [Neo4j] Unable to being transaction

Here is the story. I had some problem with my index, some inconsistency, which cause lots of those: org.neo4j.graphdb.NotFoundException: phone property not found for NodeImpl#115. at org.neo4j.kernel.impl.core.Primitive.newPropertyNotFoundException(Primitive.java:172) ~[neo4j-kernel-1.4.ja

Re: [Neo4j] Hyperedges in Neo4j

Correct, turing completeness is not the lower bound for non-guaranteed termination. It is however possible to have some forms of recursion without sacrificing guaranteed termination. Neo4j traversals, memorizing visited paths, relationships or nodes are an example (Note, it would be nice to hav

Re: [Neo4j] Unable to being transaction

Dima, got the rest of the stacktrace? Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance

Re: [Neo4j] Lucene index recovery

Dima, are you shutting down your database correctly? Make sure you can database.shutdown() and wait for it to finish ... Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twi

[Neo4j] FluentPipeline with Pipes

Hi everyone, For those on the Gremlin-users mailing list, this is not new. However, for others, I thought you would like to see some work over at TinkerPop that I'm really diggin'. In Pipes 0.8-SNAPSHOT, we have made it so that its much easier to construct "Gremlin-esque" traversals in native

Re: [Neo4j] problem in SPARQL querying

Hey, > Even on closing the manager, I did not see any change.. any further ideas?? > Thanks! The best thing to do is not dive straight into a complex SPARQL query, but look to see if the particular triples you think are lost are actually there. You can do this with simple SPARQL queries or drop

Re: [Neo4j] problem in SPARQL querying

Hi Marko, Even on closing the manager, I did not see any change.. any further ideas?? Thanks! cheers Shri -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/problem-in-SPARQL-querying-tp3298204p3301426.html Sent from the Neo4j Community Discussions mailing

Re: [Neo4j] Test and try/catch block

I like. Thanks for sharing it! Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph d

Re: [Neo4j] Hyperedges in Neo4j

Hey, > I think a traversal should in principal be performed with a query language > that is not turing complete so we can guarantee termination. Turning completeness is not the lower bound for non-guaranteed termination. You can't guarantee completion in a regular language when your "String" (d

Re: [Neo4j] Hyperedges in Neo4j

Yup, +1 on that. This is just a workaround for expressing things in property graph language. I think for proper HyperGraph support, we need to go a bit further in the modeling and querying capabilities. Will be interesting to see what you cook up :) Cheers, /peter neubauer GTalk: neubauer.p

Re: [Neo4j] Hyperedges in Neo4j

Hi Peter, Thanks for sharing this. Layout-wise, the solution you present is not really different from what Enhanced API does with regard to n-ary relationships. I would like to know if there is an elegant creation pattern for n-ary relationships, or do you have to rely on a manual creation of t

Re: [Neo4j] Online-backup error

instead of the IP, I wrote a localhost and it worked :) -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Online-backup-error-tp3298211p3301157.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.com. ___

[Neo4j] Unable to being transaction

Any idea what can cause this: org.neo4j.graphdb.TransactionFailureException: Unable to begin transaction at org.neo4j.kernel.EmbeddedGraphDbImpl.beginTx(EmbeddedGraphDbImpl.java:393) ~[neo4j-kernel-1.4.jar:1.4] at org.neo4j.kernel.EmbeddedGraphDatabase.beginTx(EmbeddedGraphDatabas

[Neo4j] Lucene index recovery

Dear list members, Each time I restart my server based on Neo4J I can see this in the logs: Sep 1, 2011 7:23:17 PM org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog doInternalRecovery INFO: Non clean shutdown detected on log [/opt/data/nioneo_logical.log.2]. Recovery started ... Sep 1, 2

Re: [Neo4j] EXTERNAL: Re: Running out of memory in creating large graph..

Gautam, look at http://docs.neo4j.org/chunked/snapshot/configuration-caches.html for some high-level information on caching. Does that meet your needs or is there more you want to know? Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 Linke

Re: [Neo4j] How to check, if nodes (more than 2) are connect with relationship

Yeah, sorry to say but I think this is algo-territory not covered already ... Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.or