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Sorry folk!
Neil Ellis
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On 8 Sep 2011, at 02:04, Neil Ellis via LinkedIn wrote:
LinkedIn
I tend to write xxxTX() and xxxNoTX methods so the user can see
instantly if the methods contain a TX.
All the best
Neil Ellis
(Sent from my iPhone)
On 7 Jun 2010, at 11:14, Wouter De Borger w.debor...@gmail.com wrote:
Hi,
I'm using it!
I agree that the transactions shouldn't
environments such as web-sites.
yay! for neo4j \o/
--
Laurent ker2x Laborde
Sysadmin DBA at http://www.over-blog.com/
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All the best
Neil Ellis
Consultant
be such a module for
Neo4j? How should I go about working with Neo4j from PHP?
Sincerely
Paul Bock
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Kind regards
Neil Ellis
See
Hmm..
Yep, that sounds about right.
I wonder how long it would have taken to write a sharding abstraction for their
use case compared to writing FlockDB, but hey I'm not trying to second guess
the problems they have at hand.
I myself am pretty ruthless about what technologies I use, it just
!
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All the best
Neil Ellis
Consultant
Mangala Solutions
http://www.mangala.co.uk
Tel/Fax: +44 (0) 20 7183 1318 | Skype: neilellis | AIM: neilel...@mac.com |
Blog: http
Hey Todd
Take a look on the wiki for the IndexService stuff . that's what
you're looking for.
All the best
Neil
On 5 Sep 2009, at 02:09, Todd Stavish wrote:
Cool. Thanks guys, I have it know. Have you given thought to just
having a global persistent hash map to find root objects? That
http://components.neo4j.org/index-util/
On 5 Sep 2009, at 02:09, Todd Stavish wrote:
Cool. Thanks guys, I have it know. Have you given thought to just
having a global persistent hash map to find root objects? That way,
you could have several root objects that were easily retrievable, and
Fantastic Johan
Once our September alpha is done we'll run against the b10-SNAPSHOT,
those features really make a difference to us.
All the best
Neil
On 2 Sep 2009, at 14:16, Johan Svensson wrote:
Hello,
Now that the 1.0-b9 release has been out for a while we have had some
time to work on
Hi Vanessa
You might want to look at the bulk load feature, it's described on the
wiki.
All the best
Neil Ellis
(Sent from my iPhone)
On 21 Aug 2009, at 10:26, Vanessa Junquero Trabado
vanessitajunqu...@hotmail.com
wrote:
I'm trying to load a hugh database with
17 million
So that kind of ties in with the Terracotta questions. An InMemory
service could
be distributed and persisted by Terracotta. Though I'm not sure I'd
actually
suggest anyone doing that as Terracotta's persistence is more fragile
than
the Neo4J storage.
ATB
Neil
On 18 Aug 2009, at 15:16,
And then use the index-utils to find the node (it's a good simple and
efficient integration with Lucene).
On 14 Aug 2009, at 16:10, Dan Heaver wrote:
Onur, add a property to each node to hold the surragate key from your
RDBMS...
Dan
On 14 Aug 2009, at 15:30, Onur AKTAS
Ain't that cool :-)
I speak from experience it works and works well. Lucene is an efficient
index, the integration is seemless (from my experience).
On 14 Aug 2009, at 17:13, Mattias Persson wrote:
// One instance per NeoService is enough
IndexService indexService = new LuceneIndexService(
Hi Johan
I meant the application is being shutdown (not neo.shutdown()) :-) -
though I understand the confusion. So as part of our shutdown process
we will tell all active threads to stop by interrupting them. When
they've all stopped I'll shutdown Neo.
So the thread this code runs in is
Cool,
Thanks as ever Johan.
ATB
Neil
On 30 Jul 2009, at 20:03, Johan Svensson wrote:
You are right, we should change that generic one to a specific runtime
exception. Will look into that during our exception refactoring.
-Johan
On Thu, Jul 30, 2009 at 8:51 PM, Neil
in the iterator
implementation of that method. I or Johan will fix that soon.
2009/7/27 Neil Ellis neil.el...@peepwl.com:
Hi guys
I noticed a side-effect in the iterator for all nodes.
If you do not do a hasNext() before a next() you get a no such
element
exception. So even if I have
Hi Johan
That would be great, those are the things that will cause us problems
when we get to production.
All the best
Neil
On 26 Jul 2009, at 13:07, Johan Svensson wrote:
Hi Neil,
It is possible to make Neo4j act as a read-only database resulting in
no recovery after a non clean
Hi Guys
So thanks for the plug for peepwl :-) I saw the slides from OSCON :-)
Okay so we have a strong use case where we want to access Neo but
don't want to trigger a complete transaction recovery if Neo fails.
We're using Neo as read-only at this point. Recovery currently takes
about
Oh and one more question, is there a utility written already to do
rapid merging of graphs. We're going to build several graphs on
several machines and then merge them later into a single graph (using
a surrogate key), wondered if anyone had already done anything in this
space already?
SEVERE: Failed loading relationships for node[5906099]
java.lang.RuntimeException: java.nio.BufferUnderflowException
at org.neo4j.impl.core.NodeManager.loadRelationships(NodeManager.java:
608)
at org.neo4j.impl.core.NodeImpl.ensureFullRelationships(NodeImpl.java:
299)
at
Hey Johan
Unit test is not so likely , it's an occasional error that appears
during a long running process - I have seen it on our 64bit CentOS
Linux boxes but not on my OS X development machine (don't read too
much into that, the linux boxes run for hours doing their processing).
I'll
Hmmm I was using a traverser while iterating through all
nodes I wonder any connection, code on it's way to you.
On 20 Jul 2009, at 15:34, Johan Svensson wrote:
Can you reproduce this? If you could create a test that triggers this
would be great cause it looks like a bug.
We've been doing an easy Gig per minute using the batch updater.
All the best
Neil Ellis
(Sent from my iPhone)
On 16 Jun 2009, at 15:50, Dennis Peterson dennisbpeter...@gmail.com
wrote:
Hi everybody, I just came across Neo4J, and while the read performance
sounds great, I haven't seen
Hi Guys
Is there a simple way to create a readonly NeoService instance? It
would be useful for us to not have any file locks or attempts at
transaction recovery etc. It might also speed up reads if you know
that there are no writes? I imagine it might have been done before
just couldn't
I'm fairly darn certain I've messed something up, but I'm sure you'd
prefer not to throw an NPE at this point.
java.lang.NullPointerException
at org.neo4j.impl.util.ArrayMap.remove(ArrayMap.java:221)
at
org
.neo4j
.util
.index
.LuceneIndexBatchInserterImpl
That NPE is probably due to multi-threaded access btw. so maybe not a
priority to fix ;-)
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descriptive exception, and we might
consider doing something to improve this. So thank you for reporting
the
problem.
Cheers,
Tobias
On Tue, Jun 16, 2009 at 8:59 PM, Neil Ellis
neil.el...@mangala.co.ukwrote:
That NPE is probably due to multi-threaded access btw. so maybe not a
priority
Hi Johan
If there are the use cases to support such a change that would be
fantastic.
All the best
Neil
On 16 Jun 2009, at 22:13, Johan Svensson wrote:
Hi Neil,
There is currently no simple way to do this, it would require some
changes to the code. However, I am starting to see more
Some feedback:
Using the batch update code in trunk, some anecdotal observations
I've had an even 1Gb per minute stored in Neo, now that's a mixture of
data and includes some text blocks but there is also 2.8 million nodes
in 4 minutes.
Disk writes during this time have been even also at
be a
spurious wakeup somewhere)? Also do you run concurrent transactions or
not? I have been trying to reproduce the other problem with nested
transactions but nothing so far.
-Johan
On Fri, Jun 5, 2009 at 7:42 PM, Neil Ellis
neil.el...@mangala.co.uk wrote:
Nope, don't think it's a user
know how it goes.
Thanks again
Neil
On 8 Jun 2009, at 14:24, Johan Svensson wrote:
On Mon, Jun 8, 2009 at 1:42 PM, Neil Ellis
neil.el...@mangala.co.uk wrote:
On 8 Jun 2009, at 12:21, Johan Svensson wrote:
On Mon, Jun 8, 2009 at 12:04 PM, Neil Ellis
neil.el...@mangala.co.uk wrote:
So
I took a little more of a look in the logs and found:
java.lang.NullPointerException
at org.neo4j.impl.nioneo.store.Buffer.getInt(Buffer.java:161)
at
org
.neo4j
.impl
.nioneo
.store.AbstractDynamicStore.getLightRecord(AbstractDynamicStore.java:
409)
at
org
:
Thanks, I'll have a look at this and run some tests with nested
transactions.
-Johan
On Thu, Jun 4, 2009 at 7:25 PM, Neil Ellis
neil.el...@mangala.co.uk wrote:
Hi these are from centos and 1.0-b8 I have changed to avoid nested
transactions and now I'm not getting this, so (at the moment
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