Re: [Neo4j] neo4j 1.1 Download? -- for Use with Current Python Bindings
Server did not exist for Neo4j 1.1, it was first released with 1.2. Cheers, Tobias On Thu, Feb 3, 2011 at 12:57 AM, James Thornton ja...@jamesthornton.comwrote: Thank you. Is the the neo4j 1.1 server download still available? On Mon, Jan 31, 2011 at 8:59 PM, James Thornton ja...@jamesthornton.com wrote: Since the current python bindings only work with neo4j 1.1 (as per this bug report https://trac.neo4j.org/ticket/302 and http://wiki.neo4j.org/content/Getting_Started_With_Python), where can you download neo4j 1.1 in the meantime until the python bindings are updated? ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Tobias Ivarsson tobias.ivars...@neotechnology.com Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Non-exact index queries with the REST API
Maximilian, for the time being, you can always write a fast Server Plugin to do this for you, should not be much work, see http://components.neo4j.org/neo4j-examples/snapshot/server-plugins.html where you can expose the fulltext queries. Would that help? 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 database. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Thu, Feb 3, 2011 at 8:49 AM, Mattias Persson matt...@neotechnology.com wrote: The index framework in neo4j (lucene integration) supports wildcards and all that, but it isn't exposed in the REST API as of yet, as Jim mentioned. 2011/2/3 Jim Webber j...@neotechnology.com Hi Max, I don't think there is a way to search for non-exact queries in the REST API today. I'll add it to the feature backlog for future releases. Jim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Visualization options for graphs
Hi, Would be good to include Arbor.js (http://arborjs.org/) to the JavaScript options listed in the Neo4J wiki (http://wiki.neo4j.org/content/Visualization_options_for_graphs) Have just started playing with it and it renders very nice graphs indeed (HTML5 + JavaScript). Regards Luanne M. Tech Lead twitter / @luannem http://twitter.com/luannem linkedin / http://in.linkedin.com/in/luannemisquitta http://in.linkedin.com/in/luannemisquitta skype / luanne.misquitta blog / http://thought-bytes.blogspot.com/ http://thought-bytes.blogspot.com/ Saba. Power Up Your People. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Visualization options for graphs
Done. Feel free to let us know if you happen to anything generic up! 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 database. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Thu, Feb 3, 2011 at 11:04 AM, Luanne Misquitta lmisqui...@saba.com wrote: Hi, Would be good to include Arbor.js (http://arborjs.org/) to the JavaScript options listed in the Neo4J wiki (http://wiki.neo4j.org/content/Visualization_options_for_graphs) Have just started playing with it and it renders very nice graphs indeed (HTML5 + JavaScript). Regards Luanne M. Tech Lead twitter / @luannem http://twitter.com/luannem linkedin / http://in.linkedin.com/in/luannemisquitta http://in.linkedin.com/in/luannemisquitta skype / luanne.misquitta blog / http://thought-bytes.blogspot.com/ http://thought-bytes.blogspot.com/ Saba. Power Up Your People. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Lucene index commit rate and NoSuchElementException
On Wed, Feb 2, 2011 at 1:20 PM, Tobias Ivarsson tobias.ivars...@neotechnology.com wrote: You are doing I/O bound work. More then two threads is most likely just going to add overhead and make things slower! I'm certainly doing something wired cause the performance of my tests aren't linear. I've run the app and let it process two big data files and this are the results: 298 rows in 3465742 ms and 2897177 rows in 3483767 ms which are values not in line with the performance of the other test which used just only 10 rows. With more rows the performance dropped down to values between 1.160404947 ms per row and 1.202469507 ms per row. The overall DB size (I measure only the db directory) has grown as well far behond the expected values: 4.9G ... Do you or anyone else have any clue? Thanks -- Massimo ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Lucene index commit rate and NoSuchElementException
2011/2/3 Massimo Lusetti mluse...@gmail.com On Wed, Feb 2, 2011 at 1:20 PM, Tobias Ivarsson tobias.ivars...@neotechnology.com wrote: You are doing I/O bound work. More then two threads is most likely just going to add overhead and make things slower! I'm certainly doing something wired cause the performance of my tests aren't linear. I've run the app and let it process two big data files and this are the results: 298 rows in 3465742 ms and 2897177 rows in 3483767 ms which are values not in line with the performance of the other test which used just only 10 rows. With more rows the performance dropped down to values between 1.160404947 ms per row and 1.202469507 ms per row. The overall DB size (I measure only the db directory) has grown as well far behond the expected values: 4.9G ... Do you or anyone else have any clue? Lucene lookup performance degrades the bigger the index gets. That may be a reason. Thanks -- Massimo ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Lucene index commit rate and NoSuchElementException
On Thu, Feb 3, 2011 at 11:30 AM, Mattias Persson matt...@neotechnology.com wrote: Lucene lookup performance degrades the bigger the index gets. That may be a reason. I don't think Lucene cannot handle an index with 6/7 million of entries. Maybe are some logs around? Cheers -- Massimo http://meridio.blogspot.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Visualization options for graphs
It's a wiki, why didn't you just do it yourself? This is actually a general question to everyone on the list: What is the main hurdle preventing you from contributing to the wiki? Cheers, Tobias On Thu, Feb 3, 2011 at 11:04 AM, Luanne Misquitta lmisqui...@saba.comwrote: Hi, Would be good to include Arbor.js (http://arborjs.org/) to the JavaScript options listed in the Neo4J wiki (http://wiki.neo4j.org/content/Visualization_options_for_graphs) Have just started playing with it and it renders very nice graphs indeed (HTML5 + JavaScript). Regards Luanne M. Tech Lead twitter / @luannem http://twitter.com/luannem linkedin / http://in.linkedin.com/in/luannemisquitta http://in.linkedin.com/in/luannemisquitta skype / luanne.misquitta blog / http://thought-bytes.blogspot.com/ http://thought-bytes.blogspot.com/ Saba. Power Up Your People. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Tobias Ivarsson tobias.ivars...@neotechnology.com Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Difference between properties and nodes
I can comment also, that while it is possible to store properties as a sub-graph as Tim suggests, that would be inefficient (in disk space and performance). Neo4j stores properties in a special property store, not actually within each node or relationship, but directly retrievable from the node or relationship. The implications of this are that you do not load properties when loading the nodes (faster traversal). Read Chris Gioran's excellent blog on the subject at http://digitalstain.blogspot.com/2010/10/neo4j-internals-file-storage.html http://digitalstain.blogspot.com/2010/10/neo4j-internals-file-storage.htmlAnother angle on this discussion is whether or not to model your domain using properties or graph structure, and there are many domain models that could be done both ways. That discussion is certainly beyond the scope of this thread :-) On Wed, Feb 2, 2011 at 7:29 PM, Rick Bullotta rick.bullo...@burningskysoftware.com wrote: Nodes are linked by relationships, and properties are attached to a node or relationship. Relationships have a type associated with them also (worksFor, livesIn, etc.), whereas nodes are essentially typeless. Properties are general data/attributes attached to a node or relationship. -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Tim McNamara Sent: Wednesday, February 02, 2011 1:25 PM To: Neo4j user discussions Subject: Re: [Neo4j] Difference between properties and nodes Sorry for the terseness of the initial email. I had intended to expand it. I was wondering whether properties are shorthand for creating edges on the graph. Are properties linked via relationships, or do nodes carry all of their data/properties with them? For example, in YAML a node could with properties looks like this: 4 type: person name: Neo Could also be represented as a tree: 4 HAS_PROPERTY(name) HAS_VALUE(Neo) Thanks for responding. On 2 February 2011 22:54, Mattias Persson matt...@neotechnology.com wrote: Hi Tim, In what aspect? performance, or semantics? Could you supply a little more context, please... 2011/1/31 Tim McNamara paperl...@timmcnamara.co.nz Is there much difference between a creating property and creating a child node? Tim ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Visualization options for graphs
It asked me to log in- at the time I did not really notice the Create account link at the top right, so I assumed wiki editing was reserved for certain people only. I shall contribute directly the next time :-) -Luanne M. -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Tobias Ivarsson Sent: Thursday, February 03, 2011 4:42 PM To: Neo4j user discussions Subject: Re: [Neo4j] Visualization options for graphs It's a wiki, why didn't you just do it yourself? This is actually a general question to everyone on the list: What is the main hurdle preventing you from contributing to the wiki? Cheers, Tobias On Thu, Feb 3, 2011 at 11:04 AM, Luanne Misquitta lmisqui...@saba.comwrote: Hi, Would be good to include Arbor.js (http://arborjs.org/) to the JavaScript options listed in the Neo4J wiki (http://wiki.neo4j.org/content/Visualization_options_for_graphs) Have just started playing with it and it renders very nice graphs indeed (HTML5 + JavaScript). Regards Luanne M. Tech Lead twitter / @luannem http://twitter.com/luannem linkedin / http://in.linkedin.com/in/luannemisquitta http://in.linkedin.com/in/luannemisquitta skype / luanne.misquitta blog / http://thought-bytes.blogspot.com/ http://thought-bytes.blogspot.com/ Saba. Power Up Your People. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Tobias Ivarsson tobias.ivars...@neotechnology.com Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Visualization options for graphs
Hi! Just make sure to confirm your email address with the wiki, and it will happily accept you edits after that! /anders 2011-02-03 13:10, Luanne Misquitta skrev: It asked me to log in- at the time I did not really notice the Create account link at the top right, so I assumed wiki editing was reserved for certain people only. I shall contribute directly the next time :-) -Luanne M. -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Tobias Ivarsson Sent: Thursday, February 03, 2011 4:42 PM To: Neo4j user discussions Subject: Re: [Neo4j] Visualization options for graphs It's a wiki, why didn't you just do it yourself? This is actually a general question to everyone on the list: What is the main hurdle preventing you from contributing to the wiki? Cheers, Tobias On Thu, Feb 3, 2011 at 11:04 AM, Luanne Misquitta lmisqui...@saba.comwrote: Hi, Would be good to include Arbor.js (http://arborjs.org/) to the JavaScript options listed in the Neo4J wiki (http://wiki.neo4j.org/content/Visualization_options_for_graphs) Have just started playing with it and it renders very nice graphs indeed (HTML5 + JavaScript). Regards Luanne M. Tech Lead twitter / @luannemhttp://twitter.com/luannem linkedin / http://in.linkedin.com/in/luannemisquitta http://in.linkedin.com/in/luannemisquitta skype / luanne.misquitta blog / http://thought-bytes.blogspot.com/ http://thought-bytes.blogspot.com/ Saba. Power Up Your People. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] neo4j with Sun Grid Engine
Hello everybody, this is my first post here, so any kind of advice, tip , trick , link or question will be nicely accepted. I'm a linux system administrator on a reserch foundation, some of the social media coworkers are interested on neo4j software and its potential. So they asked me to install it for testing pourposes. I hope this is understood as compliment to the developers. :) On the other hand, I know they are kind of heavy users, they work with heavy datasets, and I have a sun grid engine deployed on several servers. I do not know much about neo4j, so if someone can point me on how to use it with sun grid engine, or similar grid HPC service, I will make them test it that way. Many thanks. Marc -- Fundació Barcelona Media * Joan Marc Riera Duocastella * Barcelona Media - Centre d'Innovació Av. Diagonal, 177, planta 9 08018 - BARCELONA Telèfon +34 93 238 14 00 Fax +34 93 309 31 88 www.barcelonamedia.org http://www.barcelonamedia.org ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Lucene index commit rate and NoSuchElementException
Massimo, I yesterday just tried to import the Germany OpenStreetMap dataset into Neo4j using Lucene indexing. There are around 60M nodes that all are indexed into Lucene, and then looked up when the Ways, consisting of a number of nodes each, are calculated. Lucene is not fast, but it works on these 60M entries. And in inserts, it does scale reasonably even after a couple of million inserts, which wasn't the case when I tried BerkeleyDB (Java), JDBM or other K/V stores. Actually, if anyone knows a better index for exact lookups that is configurable to have good insert and lookup performance, any hint would be greatly appreciated. This is what right now limits insert performance when you use the Neo4j Batchinserter. The BatchInserter itself can insert around 200K-400K nodes or relationships per second, but the indexing subsystems are just not up to that speed. Help is greatly appreciated! 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 database. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Thu, Feb 3, 2011 at 11:52 AM, Massimo Lusetti mluse...@gmail.com wrote: On Thu, Feb 3, 2011 at 11:30 AM, Mattias Persson matt...@neotechnology.com wrote: Lucene lookup performance degrades the bigger the index gets. That may be a reason. I don't think Lucene cannot handle an index with 6/7 million of entries. Maybe are some logs around? Cheers -- Massimo http://meridio.blogspot.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Ignore Relationships while indexing
Hi Peter, Thanks for your response. That helped me a lot. I have to appreciate this community for being so prompt and helpful. Thanks, Vaibhav On Tue, Feb 1, 2011 at 7:15 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Vaibhav, youi can use the new combined Evaluator to control what will be included in the result set or not. See https://github.com/neo4j/examples/blob/master/src/test/java/org/neo4j/examples/orderedpath/OrderedPathTest.java#L71 for an example. If you want to continue traversing, and include the current node in the result, use return Evaluation.INCLUDE_AND_CONTINUE and so on. Does that help? 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 database. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Tue, Feb 1, 2011 at 1:26 PM, vaibhav adlakha adlakha.vaib...@gmail.com wrote: Hi, I wish to traverse from node A to node B in the graph and find all relationships having certain properties. If the relationship does not have that property say propertyName != desired value, then this relationship should be ignored and move to next relationships. In the end desired output is all nodes and relationships traversed between node A and node B. Using traverser and its Stop or return evaluator, we can ignore nodes while traversing them. Can any one please help me solve this problem. Thanks and Regards, Vaibhav Adlakha The thing that we call failure is not the falling down but the staying down ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Vaibhav Adlakha (9818 451534) The thing that we call failure is not the falling down but the staying down ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Lucene index commit rate and NoSuchElementException
On Thu, Feb 3, 2011 at 2:01 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Massimo, I yesterday just tried to import the Germany OpenStreetMap dataset into Neo4j using Lucene indexing. There are around 60M nodes that all are indexed into Lucene, and then looked up when the Ways, consisting of a number of nodes each, are calculated. Lucene is not fast, but it works on these 60M entries. And in inserts, it does scale reasonably even after a couple of million inserts, which wasn't the case when I tried BerkeleyDB (Java), JDBM or other K/V stores. Happy to see good results so the question seems how to fine tune Lucene or the usage which neo4j make of Lucene... Actually, if anyone knows a better index for exact lookups that is configurable to have good insert and lookup performance, any hint would be greatly appreciated. This is what right now limits insert performance when you use the Neo4j Batchinserter. The BatchInserter itself can insert around 200K-400K nodes or relationships per second, but the indexing subsystems are just not up to that speed. I'm not using the BatchInserter cause I will need to do that work on a daily basis and the normal operations are a lot slower. Help is greatly appreciated! Indeed. Thanks in advance Cheers -- Massimo http://meridio.blogspot.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Lucene index commit rate and NoSuchElementException
2011/2/3 Massimo Lusetti mluse...@gmail.com On Thu, Feb 3, 2011 at 2:01 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Massimo, I yesterday just tried to import the Germany OpenStreetMap dataset into Neo4j using Lucene indexing. There are around 60M nodes that all are indexed into Lucene, and then looked up when the Ways, consisting of a number of nodes each, are calculated. Lucene is not fast, but it works on these 60M entries. And in inserts, it does scale reasonably even after a couple of million inserts, which wasn't the case when I tried BerkeleyDB (Java), JDBM or other K/V stores. Happy to see good results so the question seems how to fine tune Lucene or the usage which neo4j make of Lucene... That was just one suggestion I had, maybe there's other things affecting the performance, I mean if we stop guessing and actually measures bottle necks. Actually, if anyone knows a better index for exact lookups that is configurable to have good insert and lookup performance, any hint would be greatly appreciated. This is what right now limits insert performance when you use the Neo4j Batchinserter. The BatchInserter itself can insert around 200K-400K nodes or relationships per second, but the indexing subsystems are just not up to that speed. I'm not using the BatchInserter cause I will need to do that work on a daily basis and the normal operations are a lot slower. Help is greatly appreciated! Indeed. Thanks in advance Cheers -- Massimo http://meridio.blogspot.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] InvalidRecordException during traversal after unclean shutdown
I've been able to manually put the store into a consistent state. I did this by simply skipping the references to Relationship[2055394] that had somehow gotten into the relationship chain of Node[1]. I haven't, however, been able to reproduce or find the cause of this. It would have been interesting to look at the logical log Neo4j created while working on your store. Could you in the future configure Neo4j with: keep_logical_logs=true That way all the logical logs will be kept and I could use that to analyze the problem, should this happen again, and you could use it to recreate your store from scratch to a consistent state. I'll continue my investigation a bit more, but I'm not sure I can get anywhere further since the faulty record has been removed. For my continued investigation I have a few questions: Does your application ever remove any relationships during normal operation? Or was the removal of the invalid relationship record the only that ever occurred? It looks like at least one other, Relationship[2055617], has been removed at some point. If this ever happens again, send the faulty store to me immediately, don't try to fix it on your own. I'd love to see the actual corrupted data. As it looks at the moment it is tempting to blame vmware (not going to do that without evidence though), I don't know how well they propagate filesystem flush() operations to the host file system, I'll have to investigate that. Was the file system in the vmware vm an actual partition on disk, or was it a virtual file system stored in an image file on the host? The non-clean shutdown that caused this, was that a JVM crash, a vmware vm crash, or a host machine crash? Cheers, Tobias On Tue, Feb 1, 2011 at 7:12 PM, Lars Hvile lars.hv...@fovea.no wrote: -- directly after successful recovery org.neo4j.kernel.impl.nioneo.store.InvalidRecordException: Node[1] is neither firstNode[2055881] nor secondNode[2055876] for Relationship[2055394] -- after manual deletion of Relationship[2055394], in a desperate recovery-attempt =) Unfortunately I don't have a copy of the database at it's original corrupt state, I do however have a copy of it after I deleted the the relationship.. 788MiB zipped It really is a shame that you removed that relationship. It would have been super useful to look at what that record looked like. Although I think that record was fine, more likely it was the reference to it that was faulty. -- Tobias Ivarsson tobias.ivars...@neotechnology.com Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] getting non-deterministic results with getAllNodes()
Hi all, I want to iterate over all the nodes in the graph and then do a tranversal on each of them. To do this, I used the getAllNodes() method of GraphDatabaseService class. But the number of nodes I get always varies on each run. I checked the number of nodes I created during graph creation time and they were as expected. The results of getAllNodes() return each node many number of times. Nodes created: 413, Nodes obtained by getAllNodes(): 6506, 5426, 7021, 7434, .. What might be going wrong here? Another question I had is, it looks like a start/root node would be created by default. Is this the case? If so, how can I avoid/recognize it in the getAllNodes() results? Thank you. Regards, Raghava. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] getting non-deterministic results with getAllNodes()
Hi Raghava, Could you please provide the code used to create the store? Could you also please provide the code you use to iterate all nodes? The reference node always has id 0, so you can filter by ID to ensure that you don't process that node. David On Thu, Feb 3, 2011 at 10:41 AM, Raghava Mutharaju m.vijayaragh...@gmail.com wrote: Hi all, I want to iterate over all the nodes in the graph and then do a tranversal on each of them. To do this, I used the getAllNodes() method of GraphDatabaseService class. But the number of nodes I get always varies on each run. I checked the number of nodes I created during graph creation time and they were as expected. The results of getAllNodes() return each node many number of times. Nodes created: 413, Nodes obtained by getAllNodes(): 6506, 5426, 7021, 7434, .. What might be going wrong here? Another question I had is, it looks like a start/root node would be created by default. Is this the case? If so, how can I avoid/recognize it in the getAllNodes() results? Thank you. Regards, Raghava. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- David Montag Neo Technology, www.neotechnology.com Cell: 650.556.4411 david.mon...@neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] getting non-deterministic results with getAllNodes()
Hi Raghava, Also, are you sure you're only creating the nodes once? Looking at your numbers, (7434-7021=413) happens to be true, though the other intervals don't match. Is this from a single run starting with a clean database (the db directory is empty)? -Andreas On Feb 3, 2011, at 7:51 PM, David Montag wrote: Hi Raghava, Could you please provide the code used to create the store? Could you also please provide the code you use to iterate all nodes? The reference node always has id 0, so you can filter by ID to ensure that you don't process that node. David On Thu, Feb 3, 2011 at 10:41 AM, Raghava Mutharaju m.vijayaragh...@gmail.com wrote: Hi all, I want to iterate over all the nodes in the graph and then do a tranversal on each of them. To do this, I used the getAllNodes() method of GraphDatabaseService class. But the number of nodes I get always varies on each run. I checked the number of nodes I created during graph creation time and they were as expected. The results of getAllNodes() return each node many number of times. Nodes created: 413, Nodes obtained by getAllNodes(): 6506, 5426, 7021, 7434, .. What might be going wrong here? Another question I had is, it looks like a start/root node would be created by default. Is this the case? If so, how can I avoid/recognize it in the getAllNodes() results? Thank you. Regards, Raghava. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- David Montag Neo Technology, www.neotechnology.com Cell: 650.556.4411 david.mon...@neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] getting non-deterministic results with getAllNodes()
Hi David Andreas, Aah, I deleted the contents of the db and ran it, this time I got the expected result of 413 nodes. I was running the same program which creates traverses the graph multiple times, so the inconsistent results. Silly of me :) Thank you for pointing it out. Regards, Raghava. On Thu, Feb 3, 2011 at 1:54 PM, Andreas Kollegger andreas.kolleg...@neotechnology.com wrote: Hi Raghava, Also, are you sure you're only creating the nodes once? Looking at your numbers, (7434-7021=413) happens to be true, though the other intervals don't match. Is this from a single run starting with a clean database (the db directory is empty)? -Andreas On Feb 3, 2011, at 7:51 PM, David Montag wrote: Hi Raghava, Could you please provide the code used to create the store? Could you also please provide the code you use to iterate all nodes? The reference node always has id 0, so you can filter by ID to ensure that you don't process that node. David On Thu, Feb 3, 2011 at 10:41 AM, Raghava Mutharaju m.vijayaragh...@gmail.com wrote: Hi all, I want to iterate over all the nodes in the graph and then do a tranversal on each of them. To do this, I used the getAllNodes() method of GraphDatabaseService class. But the number of nodes I get always varies on each run. I checked the number of nodes I created during graph creation time and they were as expected. The results of getAllNodes() return each node many number of times. Nodes created: 413, Nodes obtained by getAllNodes(): 6506, 5426, 7021, 7434, .. What might be going wrong here? Another question I had is, it looks like a start/root node would be created by default. Is this the case? If so, how can I avoid/recognize it in the getAllNodes() results? Thank you. Regards, Raghava. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- David Montag Neo Technology, www.neotechnology.com Cell: 650.556.4411 david.mon...@neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] InvalidRecordException during traversal after unclean shutdown
We're actually using the logical logs already for backups now, I'll let you know if we get this kind of problem again.. How can we use these logs to go back to a known good state, are there any tools, and is it documented somewhere? As for your questions.. - in this test we didn't delete nodes or relationships at all, except my little recovery attempt - vmware.. we're using vmware for our production environment as well, but not vmware workstation.. we're also considering ec2 for this particular project, I can't imagine that disk are more reliable there? - the file system is just regular files on the host - the unclean shutdown was me terminating the jvm on purpose while doing inserts Lars - Reply message - Fra: Tobias Ivarsson tobias.ivars...@neotechnology.com Til: Neo4j user discussions user@lists.neo4j.org Emne: [Neo4j] InvalidRecordException during traversal after unclean shutdown Dato: tor., feb. 3, 2011 18:45 I've been able to manually put the store into a consistent state. I did this by simply skipping the references to Relationship[2055394] that had somehow gotten into the relationship chain of Node[1]. I haven't, however, been able to reproduce or find the cause of this. It would have been interesting to look at the logical log Neo4j created while working on your store. Could you in the future configure Neo4j with: keep_logical_logs=true That way all the logical logs will be kept and I could use that to analyze the problem, should this happen again, and you could use it to recreate your store from scratch to a consistent state. I'll continue my investigation a bit more, but I'm not sure I can get anywhere further since the faulty record has been removed. For my continued investigation I have a few questions: Does your application ever remove any relationships during normal operation? Or was the removal of the invalid relationship record the only that ever occurred? It looks like at least one other, Relationship[2055617], has been removed at some point. If this ever happens again, send the faulty store to me immediately, don't try to fix it on your own. I'd love to see the actual corrupted data. As it looks at the moment it is tempting to blame vmware (not going to do that without evidence though), I don't know how well they propagate filesystem flush() operations to the host file system, I'll have to investigate that. Was the file system in the vmware vm an actual partition on disk, or was it a virtual file system stored in an image file on the host? The non-clean shutdown that caused this, was that a JVM crash, a vmware vm crash, or a host machine crash? Cheers, Tobias On Tue, Feb 1, 2011 at 7:12 PM, Lars Hvile lars.hv...@fovea.no wrote: -- directly after successful recovery org.neo4j.kernel.impl.nioneo.store.InvalidRecordException: Node[1] is neither firstNode[2055881] nor secondNode[2055876] for Relationship[2055394] -- after manual deletion of Relationship[2055394], in a desperate recovery-attempt =) Unfortunately I don't have a copy of the database at it's original corrupt state, I do however have a copy of it after I deleted the the relationship.. 788MiB zipped It really is a shame that you removed that relationship. It would have been super useful to look at what that record looked like. Although I think that record was fine, more likely it was the reference to it that was faulty. -- Tobias Ivarsson tobias.ivars...@neotechnology.com Hacker, Neo Technology www.neotechnology.comhttp://www.neotechnology.com Cellphone: +46 706 534857 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] getting non-deterministic results with getAllNodes()
Andreas' rain man style subtraction skills to the rescue :) Glad it worked out. Happy hacking! David On Thu, Feb 3, 2011 at 12:16 PM, Raghava Mutharaju m.vijayaragh...@gmail.com wrote: Hi David Andreas, Aah, I deleted the contents of the db and ran it, this time I got the expected result of 413 nodes. I was running the same program which creates traverses the graph multiple times, so the inconsistent results. Silly of me :) Thank you for pointing it out. Regards, Raghava. On Thu, Feb 3, 2011 at 1:54 PM, Andreas Kollegger andreas.kolleg...@neotechnology.com wrote: Hi Raghava, Also, are you sure you're only creating the nodes once? Looking at your numbers, (7434-7021=413) happens to be true, though the other intervals don't match. Is this from a single run starting with a clean database (the db directory is empty)? -Andreas On Feb 3, 2011, at 7:51 PM, David Montag wrote: Hi Raghava, Could you please provide the code used to create the store? Could you also please provide the code you use to iterate all nodes? The reference node always has id 0, so you can filter by ID to ensure that you don't process that node. David On Thu, Feb 3, 2011 at 10:41 AM, Raghava Mutharaju m.vijayaragh...@gmail.com wrote: Hi all, I want to iterate over all the nodes in the graph and then do a tranversal on each of them. To do this, I used the getAllNodes() method of GraphDatabaseService class. But the number of nodes I get always varies on each run. I checked the number of nodes I created during graph creation time and they were as expected. The results of getAllNodes() return each node many number of times. Nodes created: 413, Nodes obtained by getAllNodes(): 6506, 5426, 7021, 7434, .. What might be going wrong here? Another question I had is, it looks like a start/root node would be created by default. Is this the case? If so, how can I avoid/recognize it in the getAllNodes() results? Thank you. Regards, Raghava. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- David Montag Neo Technology, www.neotechnology.com Cell: 650.556.4411 david.mon...@neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user -- David Montag Neo Technology, www.neotechnology.com Cell: 650.556.4411 david.mon...@neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Stability of neo4j graph database
Hello, We have been evaluating the neo4j for one of our critical applications. When the server goes down abruptly without the clean shutdown of the graph db, it looks like the recovery always fails. It consistently throws the exception given below and then the graph db becomes unusable. I dont think graph had any uncommitted transactions before the abrupt shutdown, because we loaded the graph couple of days ago and since then we have been using only to read the data(though not in read only mode). It's possible that we have not configured something right. Your help is highly appreciated. I have attached our log stack trace and message.log contents Nodes: 20 Relationships:45 Properties:4,000,000 Rel types: 60 Our log stack trace: 18:48:25,455 INFO [log] Non clean shutdown detected on log [C:\JBoss\jboss-5.1.0.GA \server\all\data\ssGraphNew\nioneo_logical.log .1]. Recovery started ... 18:48:26,015 INFO [log] Non clean shutdown detected on log [C:\JBoss\ jboss-5.1.0.GA\server\all\data\ssGraphNew/lucene/lucene.log. 1]. Recovery started ... 18:48:26,047 INFO [log] Non clean shutdown detected on log [C:\JBoss\ jboss-5.1.0.GA\server\all\data\ssGraphNew/lucene-fulltext/lu cene.log.1]. Recovery started ... 18:48:26,405 INFO [log] Non clean shutdown detected on log [C:\JBoss\ jboss-5.1.0.GA\server\all\data\ssGraphNew\index/lucene.log.1 ]. Recovery started ... 18:48:30,087 ERROR [STDERR] org.neo4j.graphdb.TransactionFailureException: Could not create data source lucene-index[lucene-index] 18:48:30,089 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:182) 18:48:30,089 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneIndexProvider.load(LuceneIndexProvider.java:110) 18:48:30,090 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneIndexProvider.init(LuceneIndexProvider.java:94) 18:48:30,090 ERROR [STDERR] at org.neo4j.kernel.KernelExtension$KernelData.initAll(KernelExtension.java:153) 18:48:30,091 ERROR [STDERR] at org.neo4j.kernel.EmbeddedGraphDbImpl$2.init(EmbeddedGraphDbImpl.java:160) 18:48:30,091 ERROR [STDERR] at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:155) 18:48:30,092 ERROR [STDERR] at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:168) 18:48:30,092 ERROR [STDERR] at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:81) 18:48:30,139 ERROR [STDERR] Caused by: java.lang.reflect.InvocationTargetException 18:48:30,139 ERROR [STDERR] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 18:48:30,140 ERROR [STDERR] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 18:48:30,140 ERROR [STDERR] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.jav a:27) 18:48:30,141 ERROR [STDERR] at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 18:48:30,142 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.XaDataSourceManager.create(XaDataSourceManager.java:74) 18:48:30,142 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:176) 18:48:30,142 ERROR [STDERR] ... 79 more 18:48:30,143 ERROR [STDERR] Caused by: java.lang.NullPointerException 18:48:30,144 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneDataSource.findDocument(LuceneDataSource.java:602) 18:48:30,144 ERROR [STDERR] at org.neo4j.index.impl.lucene.CommitContext.getDocument(CommitContext.java:71) 18:48:30,145 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneCommand$AddRelationshipCommand.perform(LuceneCommand.java:212 ) 18:48:30,146 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneTransaction.doCommit(LuceneTransaction.java:231) 18:48:30,146 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaTransaction.commit(XaTransaction.java:319) 18:48:30,147 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.injectTwoPhaseCommit(XaResource Manager.java:380) 18:48:30,148 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog.applyTwoPhaseCommitEntry(XaLogicalLo g.java:577) 18:48:30,149 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog.applyEntry(XaLogicalLog.java:469) 18:48:30,149 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog.doInternalRecovery(XaLogicalLog.java :804) 18:48:30,150 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog.open(XaLogicalLog.java:274) 18:48:30,151 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog.open(XaLogicalLog.java:197) 18:48:30,151 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaContainer.openLogicalLog(XaContainer.java:98) 18:48:30,152 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneDataSource.init(LuceneDataSource.java:207) 18:48:30,152 ERROR [STDERR]
Re: [Neo4j] Stability of neo4j graph database
Hello John, what version of Neo4j are you currently running? As it tries to replay an AddRelationshipCommand and there was a recent fix around this issue, you might try to recover your db using Neo4j version 1.3 (Abisko Lampa) M01. (http://blog.neo4j.org/2011/01/neo4j-13-abisko-lampa-m01-ha-growing-up.html) Quote: Indexing bug fixes - A bug during reovery was removed that occurred when only relationship index commands were executed before the crash (Thanks to Andreas Bauer for reporting that). You can get it from here: http://neo4j.org/download HTH Michael Am 04.02.2011 um 01:48 schrieb John Howard: Hello, We have been evaluating the neo4j for one of our critical applications. When the server goes down abruptly without the clean shutdown of the graph db, it looks like the recovery always fails. It consistently throws the exception given below and then the graph db becomes unusable. I dont think graph had any uncommitted transactions before the abrupt shutdown, because we loaded the graph couple of days ago and since then we have been using only to read the data(though not in read only mode). It's possible that we have not configured something right. Your help is highly appreciated. I have attached our log stack trace and message.log contents Nodes: 20 Relationships:45 Properties:4,000,000 Rel types: 60 Our log stack trace: 18:48:25,455 INFO [log] Non clean shutdown detected on log [C:\JBoss\jboss-5.1.0.GA \server\all\data\ssGraphNew\nioneo_logical.log .1]. Recovery started ... 18:48:26,015 INFO [log] Non clean shutdown detected on log [C:\JBoss\ jboss-5.1.0.GA\server\all\data\ssGraphNew/lucene/lucene.log. 1]. Recovery started ... 18:48:26,047 INFO [log] Non clean shutdown detected on log [C:\JBoss\ jboss-5.1.0.GA\server\all\data\ssGraphNew/lucene-fulltext/lu cene.log.1]. Recovery started ... 18:48:26,405 INFO [log] Non clean shutdown detected on log [C:\JBoss\ jboss-5.1.0.GA\server\all\data\ssGraphNew\index/lucene.log.1 ]. Recovery started ... 18:48:30,087 ERROR [STDERR] org.neo4j.graphdb.TransactionFailureException: Could not create data source lucene-index[lucene-index] 18:48:30,089 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:182) 18:48:30,089 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneIndexProvider.load(LuceneIndexProvider.java:110) 18:48:30,090 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneIndexProvider.init(LuceneIndexProvider.java:94) 18:48:30,090 ERROR [STDERR] at org.neo4j.kernel.KernelExtension$KernelData.initAll(KernelExtension.java:153) 18:48:30,091 ERROR [STDERR] at org.neo4j.kernel.EmbeddedGraphDbImpl$2.init(EmbeddedGraphDbImpl.java:160) 18:48:30,091 ERROR [STDERR] at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:155) 18:48:30,092 ERROR [STDERR] at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:168) 18:48:30,092 ERROR [STDERR] at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:81) 18:48:30,139 ERROR [STDERR] Caused by: java.lang.reflect.InvocationTargetException 18:48:30,139 ERROR [STDERR] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 18:48:30,140 ERROR [STDERR] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 18:48:30,140 ERROR [STDERR] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.jav a:27) 18:48:30,141 ERROR [STDERR] at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 18:48:30,142 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.XaDataSourceManager.create(XaDataSourceManager.java:74) 18:48:30,142 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.TxModule.registerDataSource(TxModule.java:176) 18:48:30,142 ERROR [STDERR] ... 79 more 18:48:30,143 ERROR [STDERR] Caused by: java.lang.NullPointerException 18:48:30,144 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneDataSource.findDocument(LuceneDataSource.java:602) 18:48:30,144 ERROR [STDERR] at org.neo4j.index.impl.lucene.CommitContext.getDocument(CommitContext.java:71) 18:48:30,145 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneCommand$AddRelationshipCommand.perform(LuceneCommand.java:212 ) 18:48:30,146 ERROR [STDERR] at org.neo4j.index.impl.lucene.LuceneTransaction.doCommit(LuceneTransaction.java:231) 18:48:30,146 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaTransaction.commit(XaTransaction.java:319) 18:48:30,147 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.injectTwoPhaseCommit(XaResource Manager.java:380) 18:48:30,148 ERROR [STDERR] at org.neo4j.kernel.impl.transaction.xaframework.XaLogicalLog.applyTwoPhaseCommitEntry(XaLogicalLo g.java:577) 18:48:30,149 ERROR [STDERR] at
Re: [Neo4j] Stability of neo4j graph database
Am using the V1.2 (stable) Will try your suggestion. Thanks for the prompt response! Date: Fri, 4 Feb 2011 01:59:21 +0100 From: Michael Hunger michael.hun...@neotechnology.com Subject: Re: [Neo4j] Stability of neo4j graph database To: Neo4j user discussions user@lists.neo4j.org Message-ID: ac59f47e-9830-4d08-b334-ed908e53f...@neotechnology.com Content-Type: text/plain; charset=us-ascii Hello John, what version of Neo4j are you currently running? As it tries to replay an AddRelationshipCommand and there was a recent fix around this issue, you might try to recover your db using Neo4j version 1.3 (Abisko Lampa) M01. ( http://blog.neo4j.org/2011/01/neo4j-13-abisko-lampa-m01-ha-growing-up.html) Quote: Indexing bug fixes - A bug during reovery was removed that occurred when only relationship index commands were executed before the crash (Thanks to Andreas Bauer for reporting that). You can get it from here: http://neo4j.org/download HTH Michael ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Finding All Available Paths
Hi Folks,I'm slowly but surely climbing the learning path in the neo4j world. I'm using Dijkstra's algorithm for the shortest path calculation between two nodes which now seems to be working fine after some code rearranging, however I'd also like to get the list of available paths between two nodes regardless of the path length. I tried to use the findAllPaths function for the dijkstraFinder but I noticed that if there is only one available path between two nodes it returns this same path multiple times and then crashes (this only happens when there is only 1 path between 2 nodes). I was wondering whether I should be using some other finder like the finders that dont use weighted paths to get this information. If not some help would be much appreciated here, is findAllPaths supposed to return the same path multiple times. Thanks in advance ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
