Re: [Neo4j] Unrecovable transaction error
Hi Mattias, I'll send you in next minutes, in your personal email, the log required. Regards. Gian Luca On Sun, Jan 30, 2011 at 8:11 PM, Mattias Persson matt...@neotechnology.com wrote: Hi Gian, could you please supply the contents of messages.log found in your neo4j database directory? It seems like the indexing jar files are missing or fails to load at the time of recovery. The messages.log file can give hints about the problem. 2011/1/29 Gian Luca Farina Perseu farinaper...@gmail.com Hi to all, we recently (for 2nd time) engaged a transaction error using neo4j embedded. We need to investigate well about this error origin, BUT I need to understand how to resolve the following error: java.lang.RuntimeException: No mapping found for branchId[0x162374] The steps: 1) two users work on the application 2) one user receive a transaction error (sorry, not traced .. maybe an error on begin transaction) 3) shutting down the server (as usual) 4) restarting the server 5) receiving the error: java.lang.RuntimeException: No mapping found for branchId[0x162374] at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:58) at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:31) .. Caused by: org.neo4j.graphdb.TransactionFailureException: No mapping found for branchId[0x162374] at org.neo4j.kernel.impl.transaction.XaDataSourceManager.getXaResource(XaDataSourceManager.java:186) at org.neo4j.kernel.impl.transaction.TxManager.getXaResource(TxManager.java:933) at org.neo4j.kernel.impl.transaction.TxManager.buildRecoveryInfo(TxManager.java:414) at org.neo4j.kernel.impl.transaction.TxManager.recover(TxManager.java:255) at org.neo4j.kernel.impl.transaction.TxManager.init(TxManager.java:181) at org.neo4j.kernel.impl.transaction.TxModule.start(TxModule.java:85) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:156) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:167) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:81) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:65) at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:41) ... 7 more We are (still) working on Neo4j 1.2M04 thru Blueprints. I dont want to understand (in this help request) why and where I create the transaction error (maybe a not well closed transaction or other) but I need to understand HOW TO RECOVER a DB that generate the error at point 5 THAT DOES NOT START ANYMORE. :-( Thank you for your support ! Regards ! Gian Luca Farina Perseu Torino - Italy ___ 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
Re: [Neo4j] Calculating shortest paths in a large graph
Much better, I'll have a look at this tonight. -tobias On Mon, Jan 31, 2011 at 4:35 PM, Saikat Kanjilal sxk1...@hotmail.comwrote: Tobias,I apologize, I am creating the zips on the command line and they appear to be flaky, I am attaching the database zip file again, can you take a look and let me know if this is ok. I will see if I can put the heap file on dropbox and send it across.Thanks in advance From: tobias.ivars...@neotechnology.com Date: Mon, 31 Jan 2011 16:26:33 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph Since you have not sent a heap dump file (what you have sent is a stack trace, and they aren't very useful on OOME), what I would need to do is to recreate your database from your xml-file (the database zip you sent was empty), and rerun your code on that to reproduce the problem. I have not had time to do that yet. If you could send the actual *.hprof-file that is written to the working directory of the java process when the OutOfMemoryError occurs (if you've started the jvm with -XX:+HeapDumpOnOutOfMemoryError) then I could analyze this quicker. If the file is too large to send as an e-mail attachment perhaps you could upload it to dropbox or similar. Otherwise I'll let you know when I've had time to recreate your database and analyze the problem. -tobias On Mon, Jan 31, 2011 at 4:13 PM, Saikat Kanjilal sxk1...@hotmail.com wrote: Tobias/Michael et al,I was wondering if you guys had a chance to do some more analysis on this heap space issue, I have sent you the zipped up contents of part of the heap dump file problem report, the graph directory and parts of the code. Additionally I am also sending the spring configuration files and the web services code zipped up in this email. Yesterday I increased the heap size to be really large and the process ran for about 10 minutes to calculate the shortest path without arriving at the answer. Let me know if I am missing something obvious.Regards From: michael.hun...@neotechnology.com Date: Sun, 30 Jan 2011 17:19:46 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph You can also zip the graph database directory and send it to me or tobias. Do you run the algorithm just after the insertion of the data or in a separate run? Thanks Michael Am 30.01.2011 um 16:44 schrieb Saikat Kanjilal: Looks like the heap dump file didn't come across in my post, so here's the heap dump: java.lang.OutOfMemoryError: Java heap space at org.neo4j.kernel.impl.util.ArrayMap.put(ArrayMap.java:75) at org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.relGetProperties(ReadTransaction.java:157) at org.neo4j.kernel.impl.nioneo.xa.NioNeoDbPersistenceSource$ReadOnlyResourceConnection.relLoadProperties(NioNeoDbPersistenceSource.java:255) at org.neo4j.kernel.impl.persistence.PersistenceManager.loadRelProperties(PersistenceManager.java:113) at org.neo4j.kernel.impl.core.NodeManager.loadProperties(NodeManager.java:638) at org.neo4j.kernel.impl.core.RelationshipImpl.loadProperties(RelationshipImpl.java:88) at org.neo4j.kernel.impl.core.Primitive.ensureFullProperties(Primitive.java:574) at org.neo4j.kernel.impl.core.Primitive.getProperty(Primitive.java:141) at org.neo4j.kernel.impl.core.RelationshipProxy.getProperty(RelationshipProxy.java:91) at org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:39) at org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:27) at org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:101) at org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:89) at org.neo4j.graphalgo.impl.util.BestFirstSelectorFactory$BestFirstSelector.next(BestFirstSelectorFactory.java:67) at org.neo4j.kernel.impl.traversal.TraverserImpl$TraverserIterator.fetchNextOrNull(TraverserImpl.java:128) at org.neo4j.kernel.impl.traversal.TraverserImpl$TraverserIterator.fetchNextOrNull(TraverserImpl.java:95) at org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:56) at org.neo4j.graphalgo.impl.util.StopAfterWeightIterator.fetchNextOrNull(StopAfterWeightIterator.java:46) at org.neo4j.graphalgo.impl.util.StopAfterWeightIterator.fetchNextOrNull(StopAfterWeightIterator.java:30) at org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:56) at org.neo4j.graphalgo.impl.path.Dijkstra.findSinglePath(Dijkstra.java:86) at
Re: [Neo4j] Calculating shortest paths in a large graph
Thanks and btw here's a public link to my dropbox heap dump file. http://dl.dropbox.com/u/20014383/java_pid590.hprof Hope this helps.Regards From: tobias.ivars...@neotechnology.com Date: Mon, 31 Jan 2011 16:44:28 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph Much better, I'll have a look at this tonight. -tobias On Mon, Jan 31, 2011 at 4:35 PM, Saikat Kanjilal sxk1...@hotmail.comwrote: Tobias,I apologize, I am creating the zips on the command line and they appear to be flaky, I am attaching the database zip file again, can you take a look and let me know if this is ok. I will see if I can put the heap file on dropbox and send it across.Thanks in advance From: tobias.ivars...@neotechnology.com Date: Mon, 31 Jan 2011 16:26:33 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph Since you have not sent a heap dump file (what you have sent is a stack trace, and they aren't very useful on OOME), what I would need to do is to recreate your database from your xml-file (the database zip you sent was empty), and rerun your code on that to reproduce the problem. I have not had time to do that yet. If you could send the actual *.hprof-file that is written to the working directory of the java process when the OutOfMemoryError occurs (if you've started the jvm with -XX:+HeapDumpOnOutOfMemoryError) then I could analyze this quicker. If the file is too large to send as an e-mail attachment perhaps you could upload it to dropbox or similar. Otherwise I'll let you know when I've had time to recreate your database and analyze the problem. -tobias On Mon, Jan 31, 2011 at 4:13 PM, Saikat Kanjilal sxk1...@hotmail.com wrote: Tobias/Michael et al,I was wondering if you guys had a chance to do some more analysis on this heap space issue, I have sent you the zipped up contents of part of the heap dump file problem report, the graph directory and parts of the code. Additionally I am also sending the spring configuration files and the web services code zipped up in this email. Yesterday I increased the heap size to be really large and the process ran for about 10 minutes to calculate the shortest path without arriving at the answer. Let me know if I am missing something obvious.Regards From: michael.hun...@neotechnology.com Date: Sun, 30 Jan 2011 17:19:46 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph You can also zip the graph database directory and send it to me or tobias. Do you run the algorithm just after the insertion of the data or in a separate run? Thanks Michael Am 30.01.2011 um 16:44 schrieb Saikat Kanjilal: Looks like the heap dump file didn't come across in my post, so here's the heap dump: java.lang.OutOfMemoryError: Java heap space at org.neo4j.kernel.impl.util.ArrayMap.put(ArrayMap.java:75) at org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.relGetProperties(ReadTransaction.java:157) at org.neo4j.kernel.impl.nioneo.xa.NioNeoDbPersistenceSource$ReadOnlyResourceConnection.relLoadProperties(NioNeoDbPersistenceSource.java:255) at org.neo4j.kernel.impl.persistence.PersistenceManager.loadRelProperties(PersistenceManager.java:113) at org.neo4j.kernel.impl.core.NodeManager.loadProperties(NodeManager.java:638) at org.neo4j.kernel.impl.core.RelationshipImpl.loadProperties(RelationshipImpl.java:88) at org.neo4j.kernel.impl.core.Primitive.ensureFullProperties(Primitive.java:574) at org.neo4j.kernel.impl.core.Primitive.getProperty(Primitive.java:141) at org.neo4j.kernel.impl.core.RelationshipProxy.getProperty(RelationshipProxy.java:91) at org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:39) at org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:27) at org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:101) at org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:89) at org.neo4j.graphalgo.impl.util.BestFirstSelectorFactory$BestFirstSelector.next(BestFirstSelectorFactory.java:67) at org.neo4j.kernel.impl.traversal.TraverserImpl$TraverserIterator.fetchNextOrNull(TraverserImpl.java:128) at org.neo4j.kernel.impl.traversal.TraverserImpl$TraverserIterator.fetchNextOrNull(TraverserImpl.java:95) at org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:56) at
Re: [Neo4j] Neo4j is moving to git
I am pleased to announce that we have now pushed the first repository to Github: https://github.com/neo4j/graphdb This repository contains the embedded components for the Neo4j Graph Database. Later during the day/evening we will be pushing the repositories for the Neo4j Graph Database Server, and some of the Neo4j tools. We will also be publishing a blog post on how we managed to migrate full blame history for all files. This helps tremendously when tracking changes back to subversion, since that will remain online in read only mode. We had some challenges with migrating histories, but in the end git was even more helpful than we had hoped, and I believe our experiences will be useful to others as well. Happy hacking! -- 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] Calculating shortest paths in a large graph
Yes, that was a large file, I can see how you couldn't send that as an attachment ;-) Thanks a lot for powering through and getting this to me, I'll have a look at it later tonight and let you know what I find. Cheers, Tobias On Mon, Jan 31, 2011 at 4:49 PM, Saikat Kanjilal sxk1...@hotmail.comwrote: Thanks and btw here's a public link to my dropbox heap dump file. http://dl.dropbox.com/u/20014383/java_pid590.hprof Hope this helps.Regards From: tobias.ivars...@neotechnology.com Date: Mon, 31 Jan 2011 16:44:28 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph Much better, I'll have a look at this tonight. -tobias On Mon, Jan 31, 2011 at 4:35 PM, Saikat Kanjilal sxk1...@hotmail.com wrote: Tobias,I apologize, I am creating the zips on the command line and they appear to be flaky, I am attaching the database zip file again, can you take a look and let me know if this is ok. I will see if I can put the heap file on dropbox and send it across.Thanks in advance From: tobias.ivars...@neotechnology.com Date: Mon, 31 Jan 2011 16:26:33 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph Since you have not sent a heap dump file (what you have sent is a stack trace, and they aren't very useful on OOME), what I would need to do is to recreate your database from your xml-file (the database zip you sent was empty), and rerun your code on that to reproduce the problem. I have not had time to do that yet. If you could send the actual *.hprof-file that is written to the working directory of the java process when the OutOfMemoryError occurs (if you've started the jvm with -XX:+HeapDumpOnOutOfMemoryError) then I could analyze this quicker. If the file is too large to send as an e-mail attachment perhaps you could upload it to dropbox or similar. Otherwise I'll let you know when I've had time to recreate your database and analyze the problem. -tobias On Mon, Jan 31, 2011 at 4:13 PM, Saikat Kanjilal sxk1...@hotmail.com wrote: Tobias/Michael et al,I was wondering if you guys had a chance to do some more analysis on this heap space issue, I have sent you the zipped up contents of part of the heap dump file problem report, the graph directory and parts of the code. Additionally I am also sending the spring configuration files and the web services code zipped up in this email. Yesterday I increased the heap size to be really large and the process ran for about 10 minutes to calculate the shortest path without arriving at the answer. Let me know if I am missing something obvious.Regards From: michael.hun...@neotechnology.com Date: Sun, 30 Jan 2011 17:19:46 +0100 To: user@lists.neo4j.org Subject: Re: [Neo4j] Calculating shortest paths in a large graph You can also zip the graph database directory and send it to me or tobias. Do you run the algorithm just after the insertion of the data or in a separate run? Thanks Michael Am 30.01.2011 um 16:44 schrieb Saikat Kanjilal: Looks like the heap dump file didn't come across in my post, so here's the heap dump: java.lang.OutOfMemoryError: Java heap space at org.neo4j.kernel.impl.util.ArrayMap.put(ArrayMap.java:75) at org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.relGetProperties(ReadTransaction.java:157) at org.neo4j.kernel.impl.nioneo.xa.NioNeoDbPersistenceSource$ReadOnlyResourceConnection.relLoadProperties(NioNeoDbPersistenceSource.java:255) at org.neo4j.kernel.impl.persistence.PersistenceManager.loadRelProperties(PersistenceManager.java:113) at org.neo4j.kernel.impl.core.NodeManager.loadProperties(NodeManager.java:638) at org.neo4j.kernel.impl.core.RelationshipImpl.loadProperties(RelationshipImpl.java:88) at org.neo4j.kernel.impl.core.Primitive.ensureFullProperties(Primitive.java:574) at org.neo4j.kernel.impl.core.Primitive.getProperty(Primitive.java:141) at org.neo4j.kernel.impl.core.RelationshipProxy.getProperty(RelationshipProxy.java:91) at org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:39) at org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:27) at org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:101) at org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:89) at
[Neo4j] Neo4j + MapReduce
Hi All, I am a neo4j newbie and haven't yet started to use it. I am basically trying to implement a recommendation engine to learn and understand machine learning algorithms so thought neo4j would be a great choice. however, I just want to understand if mapreduce feature will be provided to process the data stored in neo4j? i might be completely wrong in putting this question but what if i have an use-case where i don't need to traverse but process all the nodes irrespective of its relation to other nodes? Is it a wise idea to store data on a document database and relations/associations in neo4j? or should it be done as a batch processing where huge amount of data in a document database and run map-reduce on it to build neo4j DB as a daily job? I am new to mapreduce and grapdb, but trying to see how best i can use (learn) them as both has unique features... Thanks in advance, John -- View this message in context: http://neo4j-user-list.438527.n3.nabble.com/Neo4j-MapReduce-tp2389817p2389817.html Sent from the Neo4J User List mailing list archive at Nabble.com. ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Unrecovable transaction error
Thanks Gian for the logs... You've run into a bug in the lucene-index implementation which I now have fixed. If you update to the latest SNAPSHOT of Neo4j and run the recovery process on your db again it should work. However, since the Neo4j repository just moved to github the buildbox isn't right where it should be so snapshots aren't built a.t.m. But I'll notify you as soon as that's back on track. Best, Mattias 2011/1/31 Gian Luca Farina Perseu farinaper...@gmail.com Hi Mattias, I'll send you in next minutes, in your personal email, the log required. Regards. Gian Luca On Sun, Jan 30, 2011 at 8:11 PM, Mattias Persson matt...@neotechnology.com wrote: Hi Gian, could you please supply the contents of messages.log found in your neo4j database directory? It seems like the indexing jar files are missing or fails to load at the time of recovery. The messages.log file can give hints about the problem. 2011/1/29 Gian Luca Farina Perseu farinaper...@gmail.com Hi to all, we recently (for 2nd time) engaged a transaction error using neo4j embedded. We need to investigate well about this error origin, BUT I need to understand how to resolve the following error: java.lang.RuntimeException: No mapping found for branchId[0x162374] The steps: 1) two users work on the application 2) one user receive a transaction error (sorry, not traced .. maybe an error on begin transaction) 3) shutting down the server (as usual) 4) restarting the server 5) receiving the error: java.lang.RuntimeException: No mapping found for branchId[0x162374] at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:58) at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:31) .. Caused by: org.neo4j.graphdb.TransactionFailureException: No mapping found for branchId[0x162374] at org.neo4j.kernel.impl.transaction.XaDataSourceManager.getXaResource(XaDataSourceManager.java:186) at org.neo4j.kernel.impl.transaction.TxManager.getXaResource(TxManager.java:933) at org.neo4j.kernel.impl.transaction.TxManager.buildRecoveryInfo(TxManager.java:414) at org.neo4j.kernel.impl.transaction.TxManager.recover(TxManager.java:255) at org.neo4j.kernel.impl.transaction.TxManager.init(TxManager.java:181) at org.neo4j.kernel.impl.transaction.TxModule.start(TxModule.java:85) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:156) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:167) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:81) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:65) at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:41) ... 7 more We are (still) working on Neo4j 1.2M04 thru Blueprints. I dont want to understand (in this help request) why and where I create the transaction error (maybe a not well closed transaction or other) but I need to understand HOW TO RECOVER a DB that generate the error at point 5 THAT DOES NOT START ANYMORE. :-( Thank you for your support ! Regards ! Gian Luca Farina Perseu Torino - Italy ___ 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 -- 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] Neo4j + MapReduce
John, Paddy Fitzgerald has been doing some great work on this theme, see https://github.com/paddydub/NeoHadoopTester for details. Paddy, do you have any additional pointers? 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 Mon, Jan 31, 2011 at 5:03 PM, yehohanan7 yehohan...@gmail.com wrote: Hi All, I am a neo4j newbie and haven't yet started to use it. I am basically trying to implement a recommendation engine to learn and understand machine learning algorithms so thought neo4j would be a great choice. however, I just want to understand if mapreduce feature will be provided to process the data stored in neo4j? i might be completely wrong in putting this question but what if i have an use-case where i don't need to traverse but process all the nodes irrespective of its relation to other nodes? Is it a wise idea to store data on a document database and relations/associations in neo4j? or should it be done as a batch processing where huge amount of data in a document database and run map-reduce on it to build neo4j DB as a daily job? I am new to mapreduce and grapdb, but trying to see how best i can use (learn) them as both has unique features... Thanks in advance, John -- View this message in context: http://neo4j-user-list.438527.n3.nabble.com/Neo4j-MapReduce-tp2389817p2389817.html Sent from the Neo4J User List mailing list archive at Nabble.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] help!
Hi! I downloaded the newest version of the project to compile it in Eclipse. Exactly what did you download? Your question would be so much easier to answer if we know what you are trying to build. /anders What do I need to do? Thank you very much! Na Meng ___ 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] Unrecovable transaction error
Hi! The build just succeeded. You can download the snapshots from here: http://neo4j.org/get?file=neo4j-1.3-SNAPSHOT-unix.tar.gz http://neo4j.org/get?file=neo4j-1.3-SNAPSHOT-windows.zip The individual jar files can also be found in this Maven repository: http://m2.neo4j.org/snapshots/ /anders 2011-01-31 19:18, Gian Luca Farina Perseu skrev: Thank you very much Mattias ... I'll wait for your notification ! Regards. Gianluca On Mon, Jan 31, 2011 at 5:21 PM, Mattias Persson matt...@neotechnology.comwrote: Thanks Gian for the logs... You've run into a bug in the lucene-index implementation which I now have fixed. If you update to the latest SNAPSHOT of Neo4j and run the recovery process on your db again it should work. However, since the Neo4j repository just moved to github the buildbox isn't right where it should be so snapshots aren't built a.t.m. But I'll notify you as soon as that's back on track. Best, Mattias 2011/1/31 Gian Luca Farina Perseufarinaper...@gmail.com Hi Mattias, I'll send you in next minutes, in your personal email, the log required. Regards. Gian Luca On Sun, Jan 30, 2011 at 8:11 PM, Mattias Persson matt...@neotechnology.com wrote: Hi Gian, could you please supply the contents of messages.log found in your neo4j database directory? It seems like the indexing jar files are missing or fails to load at the time of recovery. The messages.log file can give hints about the problem. 2011/1/29 Gian Luca Farina Perseufarinaper...@gmail.com Hi to all, we recently (for 2nd time) engaged a transaction error using neo4j embedded. We need to investigate well about this error origin, BUT I need to understand how to resolve the following error: java.lang.RuntimeException: No mapping found for branchId[0x162374] The steps: 1) two users work on the application 2) one user receive a transaction error (sorry, not traced .. maybe an error on begin transaction) 3) shutting down the server (as usual) 4) restarting the server 5) receiving the error: java.lang.RuntimeException: No mapping found for branchId[0x162374] at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:58) at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:31) .. Caused by: org.neo4j.graphdb.TransactionFailureException: No mapping found for branchId[0x162374] at org.neo4j.kernel.impl.transaction.XaDataSourceManager.getXaResource(XaDataSourceManager.java:186) at org.neo4j.kernel.impl.transaction.TxManager.getXaResource(TxManager.java:933) at org.neo4j.kernel.impl.transaction.TxManager.buildRecoveryInfo(TxManager.java:414) at org.neo4j.kernel.impl.transaction.TxManager.recover(TxManager.java:255) at org.neo4j.kernel.impl.transaction.TxManager.init(TxManager.java:181) at org.neo4j.kernel.impl.transaction.TxModule.start(TxModule.java:85) at org.neo4j.kernel.GraphDbInstance.start(GraphDbInstance.java:156) at org.neo4j.kernel.EmbeddedGraphDbImpl.init(EmbeddedGraphDbImpl.java:167) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:81) at org.neo4j.kernel.EmbeddedGraphDatabase.init(EmbeddedGraphDatabase.java:65) at com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jGraph.init(Neo4jGraph.java:41) ... 7 more We are (still) working on Neo4j 1.2M04 thru Blueprints. I dont want to understand (in this help request) why and where I create the transaction error (maybe a not well closed transaction or other) but I need to understand HOW TO RECOVER a DB that generate the error at point 5 THAT DOES NOT START ANYMORE. :-( Thank you for your support ! Regards ! Gian Luca Farina Perseu Torino - Italy ___ 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 -- 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
Re: [Neo4j] Neo4j is moving to git
Hi! Later during the day/evening we will be pushing the repositories for the Neo4j Graph Database Server, and some of the Neo4j tools. For your information, pushing more repositories was postponed until tomorrow. Instead, we got the continuous integration running again for the Neo4j Graph Database (that is https://github.com/neo4j/graphdb) project as well as the Neo4j Shell (project located at https://github.com/neo4j/shell). /anders ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] neo4j 1.1 Download? -- for Use with Current Python Bindings
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
Re: [Neo4j] Neo4j + MapReduce
Hi, Would you like to create map-reduce views using only the graph nodes? That would be very interesting. Could you maybe provide a sample map-reduce process? One possibility might be to store all the data in a neo4j graph. Run the batch processing on the graph using multiple Mappers and build a new neo4j graph in one Reducer. Regards, Paddy On Mon, Jan 31, 2011 at 8:43 AM, Saikat Kanjilal sxk1...@hotmail.comwrote: John,If you havent already take a look at some of the algorithms in mahout, they are currently using hadoop (http://mahout.apache.org) and it may be the case where some of their algorithms are taylored more towards hadoop style data-stores. Regards Date: Mon, 31 Jan 2011 17:34:25 +0100 From: peter.neuba...@neotechnology.com To: user@lists.neo4j.org Subject: Re: [Neo4j] Neo4j + MapReduce John, Paddy Fitzgerald has been doing some great work on this theme, see https://github.com/paddydub/NeoHadoopTester for details. Paddy, do you have any additional pointers? 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 Mon, Jan 31, 2011 at 5:03 PM, yehohanan7 yehohan...@gmail.com wrote: Hi All, I am a neo4j newbie and haven't yet started to use it. I am basically trying to implement a recommendation engine to learn and understand machine learning algorithms so thought neo4j would be a great choice. however, I just want to understand if mapreduce feature will be provided to process the data stored in neo4j? i might be completely wrong in putting this question but what if i have an use-case where i don't need to traverse but process all the nodes irrespective of its relation to other nodes? Is it a wise idea to store data on a document database and relations/associations in neo4j? or should it be done as a batch processing where huge amount of data in a document database and run map-reduce on it to build neo4j DB as a daily job? I am new to mapreduce and grapdb, but trying to see how best i can use (learn) them as both has unique features... Thanks in advance, John -- View this message in context: http://neo4j-user-list.438527.n3.nabble.com/Neo4j-MapReduce-tp2389817p2389817.html Sent from the Neo4J User List mailing list archive at Nabble.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
[Neo4j] Spring Data Graph - Neo4j Support 1.0.0.M2 Released
Hi everyone, I'm happy to announce the second milestone release of Spring Data Graph 1.0 project with Neo4j support. In this M2 release we provide these improvements: * Simplified annotation driven programming model for Neo4j applications * Strategy to handle representation of java types in the graph * AspectJ ITD backed field mapping for plain Java objects * Annotations for graph persistence * Support for building traversal descriptions * Support for cross-store persistence including basic transaction support * Abstract configuration class See the official announcement at http://www.springsource.org/node/3012 Feedback welcome! -- Thomas Risberg ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
