Yeah,
sorry to say but I think this is algo-territory not covered already ...
Cheers,
/peter neubauer
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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
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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,
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:
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 (data
I like.
Thanks for sharing it!
Cheers,
/peter neubauer
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http://www.neo4j.org - Your high performance graph
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
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
Dima,
are you shutting down your database correctly? Make sure you can
database.shutdown() and wait for it to finish ...
Cheers,
/peter neubauer
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Dima,
got the rest of the stacktrace?
Cheers,
/peter neubauer
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http://www.neo4j.org - Your high performance
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
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)
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.
--
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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
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Skype
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 peter.neuba...@neotechnology.com
wrote:
Hi there,
would love to answer but had no time today, will try tomorrow. Also, very
valid
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
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
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