Romiko,
which log files are you referring to? For the database transaction log
rotation, look at the neo4j.properties file to tune things, see
http://docs.neo4j.org/chunked/snapshot/server-configuration.html
For the server, there is logging.properties to tweak stuff. Note that
these settings
Uhh,
great stuff Bryce! I really need to get some manual goodness working
here, so we can get out the resulting graph structure for users to
understand and use in the right way. Cool stuff!
Cheers,
/peter neubauer
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Mmh,
us being quite non-academic, I think Indexes is good for me at least :)
Cheers,
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HI there,
Answers inline,
On Wed, Sep 21, 2011 at 8:16 PM, st.pa st...@web.de wrote:
Hi,
I've got a Cypher query with some 10k possible source nodes and some 10k
intended target nodes out of some 1M possible target nodes which looks
something like the following:
START source =
It would be nice to have this exposed in the embedded index framework as well.
On Sep 21, 2011, at 7:05 PM, Tim McNamara paperl...@timmcnamara.co.nz wrote:
+1
But the plural of index is indices.
On 22/09/2011 1:56 AM, Peter Neubauer peter.neuba...@neotechnology.com
wrote:
Josh,
very
Yes, that is where the support will be built - in. Stay tuned for details :)
Cheers,
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Hi all,
Decided to give neo4j via python a try but alas:
from neo4j import GraphDatabase
Traceback (most recent call last):
File lt;pyshell#1gt;, line 1, in module
from neo4j import GraphDatabase
File C:\Python27\lib\site-packages\neo4j\__init__.py, line 29, in
module
from
Hi,
It's the database logging, I'm finding the transaction logs are causing the
rest API to become unresponsive when it flushes to disk. Basically just want to
turn it off or set the tlog size by configuration and not via code sample as it
is demonstrated in the performance guide.
The
Romiko,
I would suggest to do the TX log config via Gremlin for the time
being, so you can resolve it via scripting. For the exposure of the Tx
log rotate size as a configuration property (there are logs for every
XA resource participating in a transaction), please raise an issue at
Hi Linan,
that would just fit for that scenario and I wouldn't use the graph database
to get the node degree. In that scenario I could also use my relationship
file to calculate the node degree, but I also want to check some other
metrics on the graph database like cluster coefficient and so on.
Hi Johan,
I changed the settings as you described, but that changed the speed not
really significantly.
To store the degree as a property on each node is an option, but I want the
node degree to be calculated from the graph database as I also want to check
some other metrics on the entire graph.
Hmm, I think the error you are getting is the result of neo4j-embedded not
finding java jars that it needs (I'll add it to the backlog to add an
explicit check for that, rather than failing like this).
Normally, neo4j-embedded will set its classpath itself, pointing to the java
jars it comes
I tried adding C:\Python27\Lib\site-packages\neo4j\javalib to sys.path but
that didn't work, see below.
I am running python 2.7 on win xp I installed
neo4j-embedded-1.5.dev104.win32.exe
import neo4j
Traceback (most recent call last):
File lt;pyshell#0gt;, line 1, in module
import neo4j
No, the sys.path thing won't work, JPype doesn't pull it's java libs off of
sys.path (unfortunately). Instead, it needs an explicit java classpath
passed to it when it gets instantiated.
Neo4j-embedded sets that classpath either on it's own (which may be broken
on windows, I'm investigating that
I manually added the path to the CLASSPATH windows environment variable via
system settings.
print os.environ['CLASSPATH']
.;C:\Program
Files\Java\jre1.6.0_07\lib\ext\QTJava.zip;C:\Python27\Lib\site-packages\neo4j\javalib\
checked it:
libpath =
On Thu, Sep 22, 2011 at 3:16 PM, bmeagle dewald.piete...@gmail.com wrote:
I manually added the path to the CLASSPATH windows environment variable via
system settings.
print os.environ['CLASSPATH']
.;C:\Program
Update on this:
I just pushed this to master, you will be able to follow the build via our
build control panel. When the deploy Embedded Python project has run
successfully, the updated version should be available on pypi for download.
There is currently almost 200 builds queued up, so it may
Wim,
you probably should try out the neo4j-friendly branch instead, but I
hear you are already in contact with Michael on this - might actually
be a Spring - issue ...
Cheers,
/peter neubauer
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All,
Cypher - the declarative graph matching approach is coming along, and
Adriano is keeping track of things -
http://ahalmeida.com/2011/09/22/neo4js-cypher-internals-part-2-all-clauses-more-scalas-parser-combinators-and-query-entry-point/
For the current state:
Peter,
Could you point me to this neo4j-friendly branch?
Regards,
Wim.
On Thu, Sep 22, 2011 at 4:43 PM, Peter Neubauer
peter.neuba...@neotechnology.com wrote:
Wim,
you probably should try out the neo4j-friendly branch instead, but I
hear you are already in contact with Michael on this -
Ahoy, I'll answer inline too.
22.09.2011 10:51, Andres Taylor wrote:
HI there,
Answers inline,
On Wed, Sep 21, 2011 at 8:16 PM, st.past...@web.de wrote:
Hi,
I've got a Cypher query with some 10k possible source nodes and some 10k
intended target nodes out of some 1M possible target
It looks really cool.
I always find it fun to create something and later find out it is an already
known construction (something worth inventing).
Anyway, I pulled your code and will removed the dependencies to the Enhanced
API stuff this week. After that we can start adding some
Hi,
I've seen this come up a number of times in various forms on the mailing
list, but -- while there are some scattered answers here and there -- there
doesn't seem to be much of a definitive solution. The problem I'm looking to
solve is basic uniqueness (e.g. for creating an account -- unique
Hi Peter,
I think this will be ok via gremlin. Have you got any sample gremlin code that
can do this, that would be much appreciated. Also in the long term I think a
combo of tx logs + rest API batching will be the solution.
Sent from my iPhone
On 22/09/2011, at 10:08 PM, Peter Neubauer
Romiko,
Gremlin is basically executing Java on the server side and thus can do
anything java can do.
http://docs.neo4j.org/chunked/snapshot/gremlin-plugin.html#rest-api-send-an-arbitrary-groovy-script---lucene-sorting
has an example of mixing native Neo4j API calls (g.createNode() etc)
after
Hi Peter
The REST interface is waiting for the TX to be finished
I'm not sure I understand this statement. Isn't each individual REST call its
own transaction? Thus, what is it waiting for?
-- Tatham
-Original Message-
From: user-boun...@lists.neo4j.org
Good stuff.
I am presently looking into concurrent use of a given UnrolledLinkedList at
least within the same graph database instance, might be a little bit harder
in HA environment. Its hard enough writing test cases for this, maybe even
harder than making it work properly! Hoping that some
Hi all,
Would like to confirm that the problem got somewhat solved after it tried to
perform CheckIndex -fix on every lucene index folder. Unfortunately I could
not investigate which 'corrupted' index did the tool delete, therefore a
'complete' index rebuilding would be a good last option in this
Hi Peter,
Thank you so much for the tips, will look into this today and see what I can
come up with. After my musings will definitely file for new features e.g
* Batching via rest api (Being on .Net we rely solely on the Rest API)
* Configuration level control of transaction log default sizes
Hi,
i had the issue few days ago and thanks to McKinley I got a workable
solution. i think the best way to do is through unmanaged extension.
the overhead of multiple REST calls could make the matter more
complex.
here is part of my ObjectFactory class. in my situation it's an
external id needs
Nice,
sounds very useful!
Cheers,
/peter neubauer
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