Re: [Neo4j] Help with slow query

2016-07-24 Thread 'Michael Hunger' via Neo4j
ame} On Sun, Jul 24, 2016 at 9:06 PM, Michael Hunger < michael.hun...@neotechnology.com> wrote: > Can you run it with PROFILE instead of EXPLAIN ? So that the actual costs > are visible not just the estimated ones? > > Please also share your current indexes/constraints (run &q

Re: [Neo4j] Help with slow query

2016-07-24 Thread 'Michael Hunger' via Neo4j
Can you run it with PROFILE instead of EXPLAIN ? So that the actual costs are visible not just the estimated ones? Please also share your current indexes/constraints (run "schema") Michael On Fri, Jul 22, 2016 at 1:09 AM, Matias Burak wrote: > Hi all, > > Hi, I need some

Re: [Neo4j] Neo4J configuration having little effect

2016-07-24 Thread 'Michael Hunger' via Neo4j
Hi Ben, nice machine. Sorry for the delay in answering Usually you don't need such gigantic heaps. 32G to 64G usually do fine. in neo4-wrapper.conf wrapper.java.initmemory=32000 wrapper.java.maxmemory=32000 in neo4j.properties For the pagecache settings (you only need this

Re: [Neo4j] Nested maps/collections

2016-07-24 Thread 'Michael Hunger' via Neo4j
They are supported within Cypher as datastructure / parameters / result types but not yet as storage properties On Tue, Jul 19, 2016 at 12:06 AM, Bryan Haakman wrote: > The reference card here says > that nested maps are

Re: [Neo4j] Authentication in neo4j 3.0

2016-07-24 Thread 'Michael Hunger' via Neo4j
Both is coming with 3.1 There is currently an unsupported way to add users: https://leanjavaengineering.wordpress.com/2015/04/16/neo4j-2-2-authentication-and-adding-extra-users/ On Fri, Jul 22, 2016 at 8:13 PM, Sachin Rodge wrote: > I am using neo4j 3.0 and would like

Re: [Neo4j] custom stored procedures

2016-07-21 Thread 'Michael Hunger' via Neo4j
See apoc.periodic.commit in Periodic.java Von meinem iPhone gesendet > Am 20.07.2016 um 16:52 schrieb Clark Richey : > > Hi! When writing your own procedure I understand that the procedure lives in > the calling transaction. However, is there any way to perform periodic

Re: [Neo4j] Neo4J hardware - processor, ram

2016-07-16 Thread 'Michael Hunger' via Neo4j
What's the expected size of your graph and concurrent user requests? Are those 10k writes / s batches or individual requests? For more concurrency more cores make more sense. And depending on your graph size more RAM. On Sat, Jul 16, 2016 at 9:55 AM, Niranjan U wrote: >

Re: [Neo4j] Re: Using Neo4j Community edition in commercial applications

2016-07-15 Thread 'Michael Hunger' via Neo4j
There is also a free startup / personal option for neo4j enterprise: https://neo4j.com/startup-program/ as well as an accomodating license for OSS projects. On Fri, Jul 15, 2016 at 9:38 PM, Dennis O wrote: > Hi Dave, > > *>> What decisions have you made about

Re: [Neo4j] Neo4j-Spark-Connector Example help

2016-07-15 Thread 'Michael Hunger' via Neo4j
Yes, sorry the compiled runtime was moved to Neo4j 3.1 so you'll have to remove this prefix: cypher runtime=compiled On Wed, Jul 13, 2016 at 8:32 PM, wrote: > I have been following the example from > https://neo4j.com/blog/neo4j-3-0-apache-spark-connector/ and everything >

Re: [Neo4j] Getting an error when running

2016-07-15 Thread 'Michael Hunger' via Neo4j
You probably have an version issue, you would have to share your build-settings (e.g. pom.xml and mvn dependency:tree) And the code you use where the error happens. Michael On Thu, Jul 14, 2016 at 6:49 PM, Kevin Pham wrote: > I'm getting this error when I try to run,

Re: [Neo4j] REST API

2016-07-15 Thread 'Michael Hunger' via Neo4j
solution now with Cypher and it works really well. > We will plan a update on a newer version. Would you suggest the Java Driver > or a newer version of the Spring stuff? > > Thanks > Martin > > Am Freitag, 15. Juli 2016 14:09:05 UTC+2 schrieb Michael Hunger: >> >

Re: [Neo4j] BatchInserter-Intermediate cache to hold reference for domainID-Neoid

2016-07-12 Thread 'Michael Hunger' via Neo4j
Sure it is part of neo4j, just check out the community/import-tool submodule here on GitHub: It uses some other parts of neo4j internally like the CSV reader and the parallel batch importer API On Tue, Jul 12, 2016 at 10:35 AM,

Re: [Neo4j] Do incoming relationships have index-free adjacency?

2016-07-11 Thread 'Michael Hunger' via Neo4j
Yes, what Clark said, nodes have index free adjacency for both incoming and outgoing relationships. So they are fast to traverse and even substructured per type and direction. On Sun, Jul 10, 2016 at 10:10 PM, Clark Richey wrote: > It doesn't make a difference which way

Re: [Neo4j] Re: BatchInserter-Intermediate cache to hold reference for domainID-Neoid

2016-07-10 Thread 'Michael Hunger' via Neo4j
Perhaps you can share your code? I think it is rather the too low pagecache config Von meinem iPhone gesendet > Am 10.07.2016 um 12:32 schrieb Ganesh Selvaraj : > > Update<> - I tried with batchinsertIndexProvider with both lucene and also > mapDB(the same code

Re: [Neo4j] Neo4j Isochrones, All Nodes Reachable

2016-07-07 Thread 'Michael Hunger' via Neo4j
Hi, 1. you should use a label + index or constraint to find your starting node 2. I'd change it to use shortest path perhaps, at least rewrite it a bit 3. do you have only one relationship-type ? // lookup via label + osm_id in index/constraint MATCH (S:Waypoint) WHERE S.osm_id="1683208894"

Re: [Neo4j] Expired SSL at https://m2.neo4j.org/content/repositories/releases/

2016-07-07 Thread 'Michael Hunger' via Neo4j
Thanks, should be fixed. On Thu, Jul 7, 2016 at 6:42 AM, Matthew Marple wrote: > Expired SSL at https://m2.neo4j.org/content/repositories/releases/ > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this

Re: [Neo4j] LOAD CSV - Wanting to set property name, not value

2016-07-05 Thread 'Michael Hunger' via Neo4j
Not directly but you can use SET a + {properties} where properties is a map And in 3.0 with procedures you can use APOC to both set named properties as well as create map-keys dynamically. e.g. https://github.com/neo4j-contrib/neo4j-apoc-procedures#map-functions

Re: [Neo4j] Re: How to Integrated with Neo4j in C#

2016-07-05 Thread 'Michael Hunger' via Neo4j
detail. Michael On Mon, Jul 4, 2016 at 3:20 PM, Siva Nainar <ans8...@gmail.com> wrote: > Dear Michael Hunger, > > Thank you for your information > > I already refer that link, i am through coding in c# create neo4j > nodes,relationship also > > I need one b

Re: [Neo4j] Re: How to Integrated with Neo4j in C#

2016-07-03 Thread 'Michael Hunger' via Neo4j
see http://neo4j.com/developer/dotnet for more detail and check out the official dotnet driver for neo4j On Sat, Jul 2, 2016 at 8:35 AM, Siva Nainar wrote: > Hi Team, > > Any javascript available for Neo4j lable node select time the particular > node details show on like

Re: [Neo4j] Re: Problems to add my unmanaged server extension

2016-07-03 Thread 'Michael Hunger' via Neo4j
Oh and can you upgrade to 3.0.3 ? On Thu, Jun 30, 2016 at 12:23 PM, luca scipioni <braditortor...@gmail.com> wrote: > Yes of course, the jar file is very simple, it is only an example file to > test an unmanaged extension. > > Il giorno giovedì 30 giugno 2016 11:23:19 UTC+2,

Re: [Neo4j] Create DataBase Neo4j with node js

2016-07-03 Thread 'Michael Hunger' via Neo4j
You have to change your password first and then use that changed password On Thu, Jun 30, 2016 at 4:19 PM, Hamza REZGUI wrote: > up vote > down votefavorite > > > i have a problem to create a

Re: [Neo4j] Adding new properties to an existing map

2016-07-03 Thread 'Michael Hunger' via Neo4j
...@levelstory.com wrote: >> Yes, I thought about that but then I would need to unpack everything again >> before I return the results. Being able to do SET map.key would be ideal, I >> guess I'll just wait until that becomes available. >> >>> On Tuesday, April 7

Re: [Neo4j] Importing a large xml file to Neo4j with Py2neo

2016-07-01 Thread 'Michael Hunger' via Neo4j
I think you should use a streaming parser, otherwise it might be even on the python side that you overflow on memory. Also I recommend doing transactions in Neo4j with batches of 10k to 100k updates per transaction. Don't store "NO " fields, just leave them off it is just a waste of space

Re: [Neo4j] lucene index corruption

2016-06-30 Thread 'Michael Hunger' via Neo4j
1. can you raise a GH issue, if possible with your db attached and the messages.log / neo4j.log log files 2. it should not get corrupted, one cause could be a broken file system or out of disk space 3. the schema indexes are implemented using lucene 4. not On Thu, Jun 30, 2016 at 12:43 AM,

Re: [Neo4j] Simulating Streaming Graph Databases with Neo4j

2016-06-30 Thread 'Michael Hunger' via Neo4j
I'm not sure where you see that those are slow operations? Do you have an example? On Thu, Jun 30, 2016 at 3:23 AM, Mohammad Hossain Namaki < mhn.na...@gmail.com> wrote: > Hi, > I want to use Neo4j in a streaming graph database which by the time > nodes/edges are inserted/removed. > However,

Re: [Neo4j] Community edition performance with more than 4 cores

2016-06-30 Thread 'Michael Hunger' via Neo4j
>> on Community Edition? >> Q3: Can we expect a performance improvement if we simply migrate to Neo4j >> Community v3.0? >> >> rgds, >> >> On Wednesday, June 15, 2016 at 10:17:08 PM UTC-7, Michael Hunger wrote: >>> >>> The enterprise edit

Re: [Neo4j] Neo4j Community Memory Usage

2016-06-27 Thread 'Michael Hunger' via Neo4j
can you share more about how you insert the data? queries / apis etc? Also your neo4j configuration? On Thu, Jun 23, 2016 at 10:41 PM, Marcus Baffa wrote: > Hi, > > I am working with Neo4j Community and my application is inserting > something like 10 nodes per second. It

Re: [Neo4j] Optimizing ShortestPath query for a better performances

2016-06-25 Thread 'Michael Hunger' via Neo4j
B->H->D > ... > now if I apply it on node A. expected results is (B,C,D,F,H). but as u can > see there are many *paths* to get into D. I might have lots of paths > between one source to another(within 3 hops) till I iterate on all relevant > nodes. > Wouldnt you query fall for

Re: [Neo4j] Optimizing ShortestPath query for a better performances

2016-06-25 Thread 'Michael Hunger' via Neo4j
Hi, for what you do shortest Path is not the right solution, as you don't wan the path between two nodes but the neighborhood of one node. Also having that many connections when you don't have the CPUs to process it doesn't make sense, scale it out on a scluster. Why do you string-concatinate

Re: [Neo4j] Re: Data Insertion into Neo4j

2016-06-21 Thread 'Michael Hunger' via Neo4j
ntents of another site. > > Please Consider the environment before printing this email. > > > On Tue, Jun 21, 2016 at 12:32 PM, 'Michael Hunger' via Neo4j < > neo4j@googlegroups.com> wrote: > >> More detail please: >> >> 0. share your query & code &

Re: [Neo4j] Neo4j 3.0.x not stable

2016-06-21 Thread 'Michael Hunger' via Neo4j
It would be great if you could share more detail. Please share your machine specs, database, queries, log files, configuration and usage patterns with a more detailed description. Please note that the configuration options changed in 3.0 and if you ran Neo4j before you need to migrate them

Re: [Neo4j] Cluster on local machine

2016-06-21 Thread 'Michael Hunger' via Neo4j
Can you share the config of the 3 servers (note that they need separate ports not just for HA but also for http/https/bolt). And the 3x logs/debug.log and logs/neo4j.log On Mon, Jun 20, 2016 at 1:45 PM, wrote: > Hi All, > > > I'm new to neo4j server, trying to

Re: [Neo4j] Re: Data Insertion into Neo4j

2016-06-21 Thread 'Michael Hunger' via Neo4j
More detail please: 0. share your query & code 0. do you use labels 1. do you use real query parameters 2. do you have indexes / constraints for the keys you merge on 3. do you batch transactions On Tue, Jun 21, 2016 at 9:00 AM, Yayati Sule wrote: > Hi Michael, > I

Re: [Neo4j] Problems to add my unmanaged server extension

2016-06-20 Thread 'Michael Hunger' via Neo4j
can you check the logs in the logs directory for any error message? Als which instructions did you use for writing and deploying your extension? On Sun, Jun 19, 2016 at 7:14 PM, luca scipioni wrote: > Hi there, i tried to add an unmanaged server extension but when i

Re: [Neo4j] Neo4j is pretty slow when trying to create relationships between existing nodes with a large amount of data

2016-06-20 Thread 'Michael Hunger' via Neo4j
in the log i parse. I am using > the python based transactions to insert stuff into the graph. Can you point > me to the doc where batch insertion APIs are explained. Thought > transactions would do that with regards to the python driver. > > > On Wednesday, June 15, 2016 at 6:5

Re: [Neo4j] Data Insertion into Neo4j

2016-06-20 Thread 'Michael Hunger' via Neo4j
You should share what you have done so far otherwise no one can help you There are docs on the mongodb connector and data import on neo4j.com/developer Most likely you forgot to create some indexes/constraints Von meinem iPhone gesendet > Am 20.06.2016 um 10:10 schrieb

Re: [Neo4j] performance when deleting large numbers of nodes

2016-06-18 Thread 'Michael Hunger' via Neo4j
Shouldn't be slow. Faster disk. Concurrent batches would help. Von meinem iPhone gesendet > Am 18.06.2016 um 22:29 schrieb John Fry : > > > Clark - this works. It is still slow. I guess multithreading may help > some > > > > Transaction tx =

Re: [Neo4j] Null id on relationships

2016-06-18 Thread 'Michael Hunger' via Neo4j
How do you access the ids? With id(r) in cypher or r.getId() in Java ? Von meinem iPhone gesendet > Am 18.06.2016 um 20:25 schrieb John Fry : > > Hello All, > > what could be the cause of having relationships in a *.db with the id set as > null? > > When I crate the

Re: [Neo4j] Neo4j and Alteryx Connection

2016-06-17 Thread 'Michael Hunger' via Neo4j
No idea what Alteryx ist. Von meinem iPhone gesendet > Am 17.06.2016 um 11:11 schrieb Sanjana Senthil : > > Hi, > > I am new to Alteryx. Can we connect neo4j database and alteryx? Is > there any solution? > > Thanks, > Sanjana > -- > You received this

Re: [Neo4j] Re: creating multiple properties on a node using batch inserter

2016-06-16 Thread 'Michael Hunger' via Neo4j
> nodeId = inserter.createNode(property, MyLabel.Person); > > > > On Thursday, June 16, 2016 at 12:54:23 PM UTC-7, Michael Hunger wrote: >> >> setNodeProperties overrides all properties >> >> so the map you use there has to contain all the properties you wan

Re: [Neo4j] Re: creating multiple properties on a node using batch inserter

2016-06-16 Thread 'Michael Hunger' via Neo4j
setNodeProperties overrides all properties so the map you use there has to contain all the properties you want to have on your node On Thu, Jun 16, 2016 at 9:21 PM, John Fry wrote: > > here is what cypher returns > > START a=node(4238335) > > > return keys(a); > >

Re: [Neo4j] Community edition performance with more than 4 cores

2016-06-15 Thread 'Michael Hunger' via Neo4j
p to 4 > cores"? Having more than 4 cores just doesn't help to the community edition > or it could actually yield a worse performance? What about available memory? > more is always expected to be better? > > Regards, > > >> On Wed, Jun 15, 2016 at 9:51 PM, 'Michael

Re: [Neo4j] Neo4j is pretty slow when trying to create relationships between existing nodes with a large amount of data

2016-06-15 Thread 'Michael Hunger' via Neo4j
*You have to share more detail of what you're doing.* Make sure to have an index / constraint on the label + property you are matching / merging. it also makes sense if you are import larger amounts to batch updates, into eg. 1k to 10k blocks. On Tue, Jun 14, 2016 at 8:23 PM, Praveen T

Re: [Neo4j] method findNodes in GraphDatabaseService throws MultipleFoundException

2016-06-15 Thread 'Michael Hunger' via Neo4j
You have to create a lock to make that an exclusive operation. Best with cypher's MERGE and a unique constraint which take care of creating that index lock for you: create constraint on t:Top assert t.id is unique; MERGE (t:Top {id:123}) RETURN t; On Wed, Jun 15, 2016 at 12:27 AM, David

Re: [Neo4j] Community edition performance with more than 4 cores

2016-06-15 Thread 'Michael Hunger' via Neo4j
You can provide the number of processors to the import tool. I presume it's mostly your disk performance. The import tool is unrelated to the enterprise core scalability. On Tue, Jun 14, 2016 at 10:38 PM, Santiago Videla wrote: > Hi, > > I'm using Neo 3.0.2

Re: [Neo4j] Collapse sequential items in cypher

2016-06-15 Thread 'Michael Hunger' via Neo4j
You're almost there. Match (a:Action) with a.type as type, a order by a.date return type, collect(a)[0..20] as actions On Tue, Jun 14, 2016 at 10:00 PM, S Ben wrote: > So here's the deal, I'm using Neo4J 3.01 and I have a graph with nodes of > type Action which have

Re: [Neo4j] Time based data query with Neo4J showing more relations than expected

2016-06-13 Thread 'Michael Hunger' via Neo4j
But you connected domain6 to domain3 not sure what your question is, the time tree and the domains live all in the same graph MERGE (d:Domain {name:'domain3.com'}) MERGE (z:Domain {name:'domain6.com'}) ... MERGE (d)-[:REFERRED_BY]->(z) On Sat, Jun 11, 2016 at 2:59 PM, 'Dorian C' via Neo4j <

Re: [Neo4j] Can't change the database in the Neo4j browser

2016-06-13 Thread 'Michael Hunger' via Neo4j
If you downloaded the installer, the config file can be found at the options pane. Michael On Thu, Jun 9, 2016 at 11:01 PM, wrote: > Hi, > > I'm very new to Neo4j, just downloaded it today. I downloaded Neo4j 3.0.2 > I have a couple of databases created via the Java

Re: [Neo4j] Potential Bug : Double/Float performance issues

2016-06-08 Thread 'Michael Hunger' via Neo4j
Can you raise a GitHub issue for this? On Wed, Jun 8, 2016 at 12:23 PM, Kamilos wrote: > Hello, > > I found something which is very strange. > > I have a graph with 100 000 nodes where a node has a property "age". > > If i want to update the property "age" of 50 nodes with

Re: [Neo4j] neo4j get Node object

2016-06-07 Thread 'Michael Hunger' via Neo4j
In a server extension you can, in 3.0 there are also nodes in procedures and the binary protocol drivers. why are you asking? On Wed, Jun 8, 2016 at 12:08 AM, Eric Fulton wrote: > I'm using neo4j 2.3.3 server. Is there anyway to get a Node object? > > -- > You

Re: [Neo4j] Neo4j 3.0 perofrmance question

2016-06-07 Thread 'Michael Hunger' via Neo4j
gt; >> But I don't see neo4j-wrapper.conf. I only see neo4j.conf and >> neo4j-community.vmoptions >> So I put dbms.memory.heap.initial_size anddbms.memory.heap.max_size in >> neo4j.conf. >> Will it work? >> *And in *neo4j-community.vmoptions I see *-Xmx512m what

Re: [Neo4j] Modeling challenge - multiple node labels?

2016-06-06 Thread 'Michael Hunger' via Neo4j
Just quickly. You can either use labels like :Band, :Artist And if you know that you have a band you can still create MEMBER_OF relationships between the individual and the bands. There are some other projects in this area, like the musicbrainz -> neo4j or lastfm import Or startups like

Re: [Neo4j] CompilationManipulator

2016-06-06 Thread 'Michael Hunger' via Neo4j
Nathaniel, it was a community / partner effort on Neo4j 1.5 We didn't have the capacity to pursue this further ... Not sure what a good continuation of this project would be. Cheers, Michael On Sat, Jun 4, 2016 at 6:06 PM, Nathaniel Bond wrote: > It's a little

Re: [Neo4j] Performance issue with 2.3.3

2016-06-04 Thread 'Michael Hunger' via Neo4j
id(n) = id(m) return n.name , n.department, > m.name, m.department order by n.name > > The distance between could be 20 hops. > > The Domain is typical for Active direcory: we habe User -Members->Groups > We want to identify Cluster of users over amount of Connections over the

Re: [Neo4j] Deleting relationships does not reduce the storage in size

2016-06-04 Thread 'Michael Hunger' via Neo4j
Cherie > >> On 4 June 2016 at 03:01, 'Michael Hunger' via Neo4j <neo4j@googlegroups.com> >> wrote: >> Just restart the db after deleting a lot of relationships will enable >> record-reuse. >> >> > Am 04.06.2016 um 01:49 schrieb Cherie Pun <cherie.cy

Re: [Neo4j] Administrative GUI

2016-06-04 Thread 'Michael Hunger' via Neo4j
Do you know neo4j browser? There are all nodes and relationship-types in the left side panel Our could you outline in more detail what you mean? Von meinem iPhone gesendet > Am 04.06.2016 um 14:54 schrieb Andy : > > Is any administrative GUI for Neo4j on Windows or

Re: [Neo4j] Performance issue with 2.3.3

2016-06-04 Thread 'Michael Hunger' via Neo4j
636005417297252034 > Am 04.06.2016 um 11:58 schrieb Michael Hunger > <michael.hun...@neotechnology.com>: > > Please share the EXPLAIN plan > > This explodes probably into billions or trillions of paths. > > Some ideas: > > turn .type properties into

Re: [Neo4j] Performance issue with 2.3.3

2016-06-04 Thread 'Michael Hunger' via Neo4j
Please share the EXPLAIN plan This explodes probably into billions or trillions of paths. Some ideas: turn .type properties into labels create a label for all your conditions, e.g. :Process and use those labels instead: What type are M, GG and X ? What is the fan out across those types (min,

Re: [Neo4j] Deleting relationships does not reduce the storage in size

2016-06-03 Thread 'Michael Hunger' via Neo4j
Just restart the db after deleting a lot of relationships will enable record-reuse. > Am 04.06.2016 um 01:49 schrieb Cherie Pun : > > Hi, > > I have seen a few questions that were posted from before that it does not > free the space up immediately. My application is

Re: [Neo4j] SSL - protokol error

2016-06-03 Thread 'Michael Hunger' via Neo4j
Wrong port That's the https port not bolt Von meinem iPhone gesendet > Am 03.06.2016 um 17:29 schrieb Andy : > > I have Java program > import org.neo4j.driver.v1.*; > import static org.neo4j.driver.v1.Values.parameters; > > import java.util.List; > import static

Re: [Neo4j] C++ interface

2016-06-03 Thread 'Michael Hunger' via Neo4j
The windows topic was discused on GH. Did you follow the instructions? You probably have to install the headers first into include. > Am 03.06.2016 um 16:22 schrieb Andy : > > First I want use it on Linux. > I do: sudo apt-get install neo4j-client > But when I try

Re: [Neo4j] Certification link is not Active - certification drive is discontinued or what??

2016-06-03 Thread 'Michael Hunger' via Neo4j
It works for me, can you try a different browser? Or enable cookies? Thanks a lot Michael > Am 03.06.2016 um 12:11 schrieb Sunil Patel : > > Hi, > I am very excited about graph and I already have completed tutorial courses > for the same from neo4j site and now I

Re: [Neo4j] load csv data failure

2016-06-03 Thread 'Michael Hunger' via Neo4j
Try to upgrade to Neo4j 3.0.2 There was a bug in USING PERIODIC commit which has been fixed. Michael > Am 03.06.2016 um 11:27 schrieb zhanbingliuwec...@gmail.com: > > hi, everyone, > I am a newcomer, I import data to neo4j with load csv method, > customerId, name > id1,'a' > > idn,'n' >

Re: [Neo4j] a* traversal cost evaluator - how to customize

2016-06-02 Thread 'Michael Hunger' via Neo4j
Check out the graphdatabases.com book it has a nice section on A* with usage examples. I think your understanding is roughly correct: - costEvaluatior -> length of existing path (sum of cost values)

Re: [Neo4j] how to delete rows on node

2016-06-01 Thread 'Michael Hunger' via Neo4j
Not sure what you want to do, I presume you want to delete the node with the id P001 ? > match(pengguna :Pengguna {idPengguna : "P001"}) > detach delete pengguna What you did was find the node and remove the name property. > Am 01.06.2016 um 06:14 schrieb Christian Yonathan

Re: [Neo4j] Neo4j 3.0 perofrmance question

2016-05-31 Thread 'Michael Hunger' via Neo4j
I think your memory setting is wrong. On my desktop running with 4G heap, it can handle these numbers. Can you make sure to check neo4j-wrapper.conf and set the HEAP size to 12 or 16G dbms.memory.heap.max_size=16000 By default the JVM only take 1G or so of heap. > Am 01.06.2016 um 02:30

Re: [Neo4j] Cypher 1.8: Relationship not found

2016-05-31 Thread 'Michael Hunger' via Neo4j
SDN 4.1.1 with OGM 2.0.2 > Am 31.05.2016 um 18:41 schrieb Eric Fulton : > > Which of those dependencies should I upgrade? You mean neo4j? > > Thanks! > Eric > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To

Re: [Neo4j] Nested Transactions Bolt

2016-05-31 Thread 'Michael Hunger' via Neo4j
No, but you can open a new session which has its own TX. Michael > Am 27.05.2016 um 21:24 schrieb Michael Johnson : > > Hello. I'm migrating code from Embedded Neo4J to bolt. I was wondering if > the behavior of transactions is still the same as with the embedded API. As

Re: [Neo4j] C++ interface

2016-05-28 Thread 'Michael Hunger' via Neo4j
There is a C library see neo4j.com/developer/c which you should be able to wrap. Von meinem iPhone gesendet > Am 28.05.2016 um 08:44 schrieb Andy : > > Is C++ interface for Neo4j? > -- > You received this message because you are subscribed to the Google Groups >

Re: [Neo4j] Cypher 1.8: Relationship not found

2016-05-27 Thread 'Michael Hunger' via Neo4j
Can you upgrade to a more recent version? > Am 28.05.2016 um 01:40 schrieb Eric Fulton : > > Was this problem ever resolved? I still see it consistently. I'm running > neo4j 2.3.3, ogm version 1.1.4, and using neo4j template from > spring-data-neo4j 4.0.0.RELEASE. >

Re: [Neo4j] Adding a large number of nodes, and relationships to Neo4j

2016-05-27 Thread 'Michael Hunger' via Neo4j
gt; Thanks, and have a great weekend. > > Diaa ElKott > > > > > On Friday, May 27, 2016 at 4:48:23 PM UTC-4, Michael Hunger wrote: > bin/neo4j-shell -file import.cypher (in the zip / tar.gz download) > > separate the commands with semicolons. > >

Re: [Neo4j] Can't install gremlin plugin into Neo4J

2016-05-27 Thread 'Michael Hunger' via Neo4j
That plugin if for TP2, I doubt anyone still uses that. You can use gremlin server with a Neo4jGraph installed if you want to access Neo4j via gremlin remotely. Michael > Am 27.05.2016 um 12:50 schrieb Andreas Georgiou : > > Hello everybody. > > I have to install

Re: [Neo4j] Adding a large number of nodes, and relationships to Neo4j

2016-05-27 Thread 'Michael Hunger' via Neo4j
bin/neo4j-shell -file import.cypher (in the zip / tar.gz download) separate the commands with semicolons. you can use "begin" "commit" on separate lines to control transactions. Please note that there is a bug with periodic commit in Neo4j shell in versions 3.0 and 3.0.1 It's fixed in

Re: [Neo4j] Cypher queries in python

2016-05-27 Thread 'Michael Hunger' via Neo4j
Best to ask such questions on stackoverflow: In general, index the location array of [lat, lon] CREATE CONSTRAINT ON (loc:Location) ASSERT loc.coords IS UNIQUE; MERGE (loc:Location {coords:[{lat},{lon}]}) CREATE (m:Measure {value:{value}, time:{time}})-[:AT]->(loc); Alternatively use two

Re: [Neo4j] Slow node creation/commits with unique constraint in 2.0.0

2016-05-26 Thread 'Michael Hunger' via Neo4j
I meant: with an index you the fast lookup but no pentalty with an constraint you have the uniqueness guarantee via a lock and check against the constraint on write, both of which cost. But I ask if that can be alleviated. Could you test it in 3.0.2 if it performs better? Michael > Am

Re: [Neo4j] Re: Slow node creation/commits with unique constraint in 2.0.0

2016-05-26 Thread 'Michael Hunger' via Neo4j
Can you share the query plan from before and after the constraint? Oh if you had an index on uid then you had the benefit of the "fast scan" but without the penalty of "asserting uniqueness across the index". Michael > Am 26.05.2016 um 18:25 schrieb Eric Fulton : > >

Re: [Neo4j] Re: Slow node creation/commits with unique constraint in 2.0.0

2016-05-25 Thread 'Michael Hunger' via Neo4j
Do you do one operation per transaction or multiple statements per transaction? I presume you had CREATEs before you had the constraint, not MERGE's ? Because merges without constraints do a full scan on the label. I also presume you use parameters, not literal values ?! MERGE (n:Thing { uid :

Re: [Neo4j] Re: Slow node creation/commits with unique constraint in 2.0.0

2016-05-25 Thread 'Michael Hunger' via Neo4j
Can give us more details? Michael > Am 25.05.2016 um 23:50 schrieb Eric Fulton : > > I'm still seeing 10x performance hit from a uniqueness constraint being > added. Is this on the roadmap to be addressed? > > -- > You received this message because you are subscribed

Re: [Neo4j] Neo4j 2.1.8 and 2.2

2016-05-24 Thread 'Michael Hunger' via Neo4j
You can find them here: http://neo4j.com/download/other-releases and 2.1.8 is here: http://info.neo4j.com/download-thanks.html?edition=community=2.1.8=unix > Am 24.05.2016 um 14:13 schrieb Andreas Georgiou : > > Can someone paste me a download link for the version

Re: [Neo4j] Neo4j service not restarting after crashing

2016-05-23 Thread 'Michael Hunger' via Neo4j
tarted it). > > I'm not sure if this is important, but my log files where found at > /var/lib/neo4j/data/graph.db/messages.log and > /var/lib/neo4j/data/log/console.log. I did not have a neo4j.log file. > > Thank you for your time and help. > > On Sunday, May 22, 2016 at 6:19

Re: [Neo4j] I need to understand how I create a new bank

2016-05-23 Thread 'Michael Hunger' via Neo4j
You just create your data either as disconnected graphs, ... or use multiple databases ... Currently there is only one database running at a time, you can select other database names by config. > Am 18.05.2016 um 16:53 schrieb aline.man...@outlook.com: > > Good morning everyone. I apologize

Re: [Neo4j] GraphGist Installation

2016-05-23 Thread 'Michael Hunger' via Neo4j
> Consulting Services Pvt. Ltd. will not be liable to any client or third party > for the accuracy of the information supplied through this service. > > Innoplexus Consulting Services Pvt. Ltd. accepts no responsibility or > liability for the contents of any other

Re: [Neo4j] GraphGist Installation

2016-05-23 Thread 'Michael Hunger' via Neo4j
lexus > Consulting Services Pvt. Ltd. will not be liable to any client or third party > for the accuracy of the information supplied through this service. > > Innoplexus Consulting Services Pvt. Ltd. accepts no responsibility or > liability for the contents of any other site, whether

Re: [Neo4j] GraphGist Installation

2016-05-23 Thread 'Michael Hunger' via Neo4j
ther site, whether linked to this site or > not, or any consequences from your acting upon the contents of another site. > > Please Consider the environment before printing this email. > > On Mon, May 23, 2016 at 11:55 AM, 'Michael Hunger' via Neo4j > <neo4j@googlegroups.c

Re: [Neo4j] Marketplace built with Neo4j

2016-05-23 Thread 'Michael Hunger' via Neo4j
I think structr (http://structr.org) can be something you're looking for. It's a graph application platform on top of Neo4j with a rich JS-UI for designing sites and pages and lots of functionality (incl. payment) out of the box. Axel cc'ed might be able to point you to the right resources for

Re: [Neo4j] Neo4j service not restarting after crashing

2016-05-22 Thread 'Michael Hunger' via Neo4j
Can you share your /var/lib/neo4j/graph.db/messages.log and /var/lib/neo4j/logs/neo4j.log ? And /var/log/neo4j/neo4j.log (I think it's there). Michael > Am 19.05.2016 um 19:17 schrieb con...@principal.la: > > Hi, > > I have installed Neo4j 2.3.3 on an Ubuntu 14.04 server via apt-get and use

Re: [Neo4j] How to understand cypher example?

2016-05-22 Thread 'Michael Hunger' via Neo4j
It creates data. Pairs of people are sent in as a parameter list For each pair each person is created (merged by name) and then connected. > Am 22.05.2016 um 23:11 schrieb Andy : > > From neo4j.com/developer ? > I am neo4j beginner. > First , we have: > String

Re: [Neo4j] Neo4J query to do Group By on Nodes for same type of data

2016-05-17 Thread 'Michael Hunger' via Neo4j
MATCH (person:Person)-[:ADDRESS_AT]->(address:Address) WITH address, COLLECT(person.name) AS names WHERE size(names) > 1 RETURN address, names; > Am 17.05.2016 um 01:52 schrieb Docers Docy : > > > 0 > down vote > favorite > Following is what I created in Neo4j: > > Nodes:

Re: [Neo4j] decode noe4j database 2.1.4

2016-05-17 Thread 'Michael Hunger' via Neo4j
Why / what do you want to do? > Am 17.05.2016 um 07:50 schrieb Eduardo Sepulveda : > > Hi, I am trying to decode a neo4j database which is in a format 2.1.4. i had > a lot of troubles doing it by myself, so is any that could help to get the > information that is inside de

Re: [Neo4j] save and restore database state

2016-05-17 Thread 'Michael Hunger' via Neo4j
What's your use-case? Michael > Am 17.05.2016 um 22:37 schrieb Jens Weber : > > Is there a way to save and restore neo4j graph database states (other than by > using transactions)? Of course, I know that there is a backup mechanism, but > I am looking for something faster,

Re: [Neo4j] Anybody currently using Neo4j with Django?

2016-05-17 Thread 'Michael Hunger' via Neo4j
I saw this popping up today, but Nigel also wanted to add some support to py2neo afaik. https://twitter.com/py3k/status/732788101102374913 Michael > Am 17.05.2016 um 04:34 schrieb Jeff Ericson : > > I don't see much fresh data here or on SO. I tried to set up a new project

Re: [Neo4j] Shortest path using query

2016-05-17 Thread 'Michael Hunger' via Neo4j
Just add a WHERE clause (at least in Neo4j 3.x) WHERE ALL( rel in rels(path) WHERE rel.cost > 10) > Am 17.05.2016 um 15:19 schrieb Johan Kumps : > > Hi, > > I'm currently calculating the shortest paths between 2 nodes via the SEM_SIM > relationship using the following

Re: [Neo4j] Multi Machine Setup not working

2016-05-15 Thread 'Michael Hunger' via Neo4j
Ltd. accepts no responsibility or > liability for the contents of any other site, whether linked to this site or > not, or any consequences from your acting upon the contents of another site. > > Please Consider the environment before printing this email. > > On Sun, May 15, 20

Re: [Neo4j] Multi Machine Setup not working

2016-05-15 Thread 'Michael Hunger' via Neo4j
Can you share the config files for all 3 machines? > Am 13.05.2016 um 01:35 schrieb yayati.s...@innoplexus.com: > > Hi, > I am trying to setup multi Machine cluster for Neo4j 3.0.1(Milestone). I am > repeatedly getting the following error from my Log Files. > > 2016-05-13 06:26:35.251+

Re: [Neo4j] Get GC overhead limit exceeded while executing batches of cypher query

2016-05-13 Thread 'Michael Hunger' via Neo4j
erge does not guarantee uniqueness of relationship, so when > should I use create unique and when I should I use merge? Thanks. > > Kind regards, > Cherie > > On 13 May, 2016 12:16 pm, "'Michael Hunger' via Neo4j" > <neo4j@googlegroups.com> wrote:

Re: [Neo4j] Get GC overhead limit exceeded while executing batches of cypher query

2016-05-13 Thread 'Michael Hunger' via Neo4j
Your tx-handling code looks wrong. You should execute the whole batch of creating the connections in the other thread, Just grabbing the transaction there is very dangerous as the tx will be used that's attached to the current thread instead. I also recommend batching in cypher, that makes it

Re: [Neo4j] Get GC overhead limit exceeded while executing batches of cypher query

2016-05-13 Thread 'Michael Hunger' via Neo4j
Can you share your actual code and queries Von meinem iPhone gesendet > Am 12.05.2016 um 18:52 schrieb Cherie Pun : > > I am trying to iterate through the results from the first query and execute > an extra cypher query for each result to either create or find the

Re: [Neo4j] neo4j 2.3.3 / 3.x and gephi 0.9.1

2016-05-12 Thread 'Michael Hunger' via Neo4j
That update has always be a pain. It would be much better if the gephi plugin connected to Neo4j server via HTTP or Bolt and pulled the data from there using Cypher. I currently don't have the capacity. But if there is anyone with some Netbeans experience I would be more than happy to support

Re: [Neo4j] Maximum Number of Lucene Indexes

2016-05-12 Thread 'Michael Hunger' via Neo4j
There is no principal limit, but as the number grows, it will affect your write performance as all those indexes have to be updated. What numbers are you looking at? > Am 12.05.2016 um 02:00 schrieb Andrew Campbell > : > > Is there a limit to the number of

Re: [Neo4j] Neo4j start successfully, but with no data

2016-05-11 Thread 'Michael Hunger' via Neo4j
What does the code view show? > Am 11.05.2016 um 18:23 schrieb Zhixuan Wang : > > I am using neo4j-2.3.3 now > > After some batch jobs running over night which resulted in a crash, I noticed > that my neo4j server can not return any data after restarting. > The

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