Re: [Neo4j] Unable to Get Backup to Run
Hmm, no it does not. There has got to be something else going on... the log message you pasted doesn't really say anything, just that a connection timed out and the server noticed that. 2011/5/22 Kevin Dieter kevin.die...@megree.com Here's what I see in the messages.log when I tried the backup command: Fri May 20 07:00:24 PDT 2011: Found dead channel [id: 0x3d36acb6, / 127.0.0.1:56110 : /127.0.0.1:6362], SlaveContext[ID:0, eventIdentifier:0, [(lucene-index, 15726285), (nioneodb, 38747027)]] Fri May 20 07:00:24 PDT 2011: Removed [id: 0x3d36acb6, /127.0.0.1:56110 : / 127.0.0.1:6362], SlaveContext[ID:0, eventIdentifier:0, [(lucene-index, 15726285), (nioneodb, 38747027)]] It also seems the server becomes somewhat unstable after this and eventually I need to stop and restart it (and it always seems to detect it as a non-clean shutdown and spends a fair amount of time applying transactions to restore the state of the server). Does this help? Kevin On Fri, May 20, 2011 at 4:42 PM, Mattias Persson matt...@neotechnology.comwrote: Could you post the contents of the messages.log from the database directory? It may be that it encounters an exception on the database you're getting the backup from. If you're running neo4j server the file would be neo4j-server-directory\data\graph.db\messages.log or if you run an embedded database it would be neo4j-database-directory\messages.log. That would could give hints about the problem. Are you seeing more/other stacktraces btw? Could you post full stacktraces? 2011/5/20 Kevin Dieter kevin.die...@megree.com Hi, I am trying to set up a scheduled backup for my neo4j database and I have been unable to get the backup to run. See below for the commands I am running (first to do a full backup and then incremental). The weird thing is that I was able to run the full backup, and incremental successfully last night using the exact same commands. Any idea why I am getting the timeout exception? Thanks, Kevin --- C:\cURLC:\neo4J\neo4j-enterprise-1.3-windows\bin\neo4jbackup -full -from single://localhost:6362 -to c:/neo4J-backup Performing full backup from 'single://localhost:6362' Exception in thread main java.lang.RuntimeException: c:/neo4J-backup already contains a database at org.neo4j.backup.OnlineBackup.full(OnlineBackup.java:69) at org.neo4j.backup.BackupTool.doBackup(BackupTool.java:119) at org.neo4j.backup.BackupTool.main(BackupTool.java:83) C:\cURLC:\neo4J\neo4j-enterprise-1.3-windows\bin\neo4jbackup -incremental -from single://localhost:6362 -to c:/neo4J-backup Performing incremental backup from 'single://localhost:6362' Couldn't connect to 'single://localhost:6362', org.neo4j.com.ComException: org.jboss.netty.handler.queue.BlockingReadTimeoutException ___ 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] Neo4J as Persistence Store for Apache Jackrabbit?
Has anyone experimented with/implemented this yet? We're looking at Apache Vypser (embeddable XMPP server) and it would be great to have a single persistence store (Neo4J) if possible. Vysper uses Jackrabbit for its storage at present. Thanks, Rick ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] No index provider 'lucene' found - osgi
Hello everybody I'm currently trying to make my spring based osgi application run with neo4j 1.3 . However, when I call 'org.neo4j.kernel.IndexManagerImpl.forNodes' I got the following error (see [1] for a complete stack trace): Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No index provider 'lucene' found My setup is as follows: loaded and running bundles: - org.apache.servicemix.bundles.lucene - org.neo4j.kernel - org.apache.servicemix.bundles.lucene Do I have to load any lucene classes into the classpath on startup? Thanks a lot and let me know if I have to provide more information Marco Gerber [1] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No index provider 'lucene' found at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:394) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1413) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:844) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:786) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:795) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723) ... 20 common frames omitted Caused by: java.lang.IllegalArgumentException: No index provider 'lucene' found at org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:71) at org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:104) at org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:173) at org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:244) at net.junisphere.eranger.helloNeo4j.config.internal.repository.BaseRepository.init(BaseRepository.java:31) at net.junisphere.eranger.helloNeo4j.config.internal.repository.ServiceRepository.init(ServiceRepository.java:35) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:340) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:293) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:130) ... 33 common frames omitted ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] No index provider 'lucene' found - osgi
Hi Marco, Could you post the contents of graphDb/messages.log file also? 2011/5/23 Marco Gerber mger...@junisphere.net Hello everybody I'm currently trying to make my spring based osgi application run with neo4j 1.3 . However, when I call 'org.neo4j.kernel.IndexManagerImpl.forNodes' I got the following error (see [1] for a complete stack trace): Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No index provider 'lucene' found My setup is as follows: loaded and running bundles: - org.apache.servicemix.bundles.lucene - org.neo4j.kernel - org.apache.servicemix.bundles.lucene Do I have to load any lucene classes into the classpath on startup? Thanks a lot and let me know if I have to provide more information Marco Gerber [1] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No index provider 'lucene' found at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:394) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1413) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:844) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:786) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:795) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723) ... 20 common frames omitted Caused by: java.lang.IllegalArgumentException: No index provider 'lucene' found at org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:71) at org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:104) at org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:173) at org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:244) at net.junisphere.eranger.helloNeo4j.config.internal.repository.BaseRepository.init(BaseRepository.java:31) at net.junisphere.eranger.helloNeo4j.config.internal.repository.ServiceRepository.init(ServiceRepository.java:35) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:340) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:293) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:130) ... 33 common frames omitted ___ 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] No index provider 'lucene' found - osgi
Hi Mattias Here's my graphdb/messages.log: Mon May 23 14:36:05 CEST 2011: Creating new db @ /tmp/var/base/neostore Mon May 23 14:36:08 CEST 2011: Opened [/tmp/var/base/nioneo_logical.log.1] clean empty log, version=0 Mon May 23 14:36:09 CEST 2011: TM new log: tm_tx_log.1 Mon May 23 14:36:09 CEST 2011: --- CONFIGURATION START --- Mon May 23 14:36:09 CEST 2011: Physical mem: 5839MB, Heap size: 910MB Mon May 23 14:36:09 CEST 2011: Kernel version: Neo4j - Graph Database Kernel 1.3 Mon May 23 14:36:09 CEST 2011: Operating System: Linux; version: 2.6.35-28-generic-pae; arch: i386; cpus: 4 Mon May 23 14:36:09 CEST 2011: VM Name: Java HotSpot(TM) Server VM Mon May 23 14:36:09 CEST 2011: VM Vendor: Sun Microsystems Inc. Mon May 23 14:36:09 CEST 2011: VM Version: 19.1-b02 Mon May 23 14:36:09 CEST 2011: Boot Class Path: /usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/resources.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/rt.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/sunrsasign.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/jsse.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/jce.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/charsets.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/modules/jdk.boot.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/classes Mon May 23 14:36:09 CEST 2011: Class Path: /home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/org.eclipse.virgo.osgi.console-3.0.0.M03.jar:/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/org.eclipse.virgo.osgi.launcher-3.0.0.M03.jar:/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/org.eclipse.virgo.kernel.shutdown-3.0.0.M03.jar:/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/com.springsource.javax.transaction-1.1.0.jar:/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/org.eclipse.osgi-3.7.0.v20110224.jar:/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/org.eclipse.virgo.osgi.extensions.equinox-3.0.0.M03.jar:/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/lib/org.eclipse.virgo.kernel.authentication-3.0.0.M03.jar:/usr/lib/jvm/java-6-sun-1.6.0.24/lib/tools.jar Mon May 23 14:36:09 CEST 2011: Library Path: /usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/i386/server:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/../lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/i386/client:/usr/lib/jvm/java-6-sun-1.6.0.24/jre/lib/i386::/usr/java/packages/lib/i386:/lib:/usr/lib Mon May 23 14:36:09 CEST 2011: Garbage Collector: PS Scavenge: [PS Eden Space, PS Survivor Space] Mon May 23 14:36:09 CEST 2011: Garbage Collector: PS MarkSweep: [PS Eden Space, PS Survivor Space, PS Old Gen, PS Perm Gen] Mon May 23 14:36:09 CEST 2011: VM Arguments: [-XX:+HeapDumpOnOutOfMemoryError, -XX:ErrorFile=/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/serviceability/error.log, -XX:HeapDumpPath=/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/serviceability/heap_dump.hprof, -Djava.rmi.server.hostname=127.0.0.1, -Dorg.eclipse.virgo.kernel.home=/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03, -Djava.io.tmpdir=/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/work/tmp/, -Dcom.sun.management.jmxremote, -Dcom.sun.management.jmxremote.port=9753, -Dcom.sun.management.jmxremote.authenticate=false, -Dcom.sun.management.jmxremote.ssl=false, -Dorg.eclipse.virgo.kernel.authentication.file=/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/config/org.eclipse.virgo.kernel.users.properties, -Djava.security.auth.login.config=/home/mgerber/spring/springsource/virgo-tomcat-server-3.0.0.M03/config/org.eclipse.virgo.kernel.authentication.config, -Dfile.encoding=UTF-8] Mon May 23 14:36:09 CEST 2011: Mon May 23 14:36:09 CEST 2011: create=true Mon May 23 14:36:09 CEST 2011: logical_log=/tmp/var/base/nioneo_logical.log Mon May 23 14:36:09 CEST 2011: neo_store=/tmp/var/base/neostore Mon May 23 14:36:09 CEST 2011: neostore.nodestore.db.mapped_memory=20M Mon May 23 14:36:09 CEST 2011: neostore.propertystore.db.arrays.mapped_memory=130M Mon May 23 14:36:09 CEST 2011: neostore.propertystore.db.index.keys.mapped_memory=1M Mon May 23 14:36:09 CEST 2011: neostore.propertystore.db.index.mapped_memory=1M Mon May 23 14:36:09 CEST 2011: neostore.propertystore.db.mapped_memory=90M Mon May 23 14:36:09 CEST 2011: neostore.propertystore.db.strings.mapped_memory=130M Mon May 23 14:36:09 CEST 2011: neostore.relationshipstore.db.mapped_memory=100M Mon May 23 14:36:09 CEST 2011: rebuild_idgenerators_fast=true Mon May 23 14:36:09 CEST 2011: store_dir=/tmp/var/base Mon May 23 14:36:09 CEST 2011: use_memory_mapped_buffers=true Mon May 23 14:36:09 CEST 2011: --- CONFIGURATION END --- Mon May 23 14:36:09 CEST 2011: Closed log /tmp/var/base/nioneo_logical.log Mon May 23 14:36:09 CEST 2011: NeoStore closed Mon May 23 14:36:09 CEST 2011: NeoStore closed Mon May 23 14:36:09 CEST 2011: TM shutting down -Original
Re: [Neo4j] Spring Data Graph in an OSGi environment
I have not spent much more time trying to get SDG running as a bundle any more. I'll give it another shot today or tomorrow and let you know how I'm proceeding. What definitively has to be done is fixing the package imports of SDG and the package exports of neo4j (see https://jira.springsource.org/browse/DATAGRAPH-88) so that SDG is not using *.impl.* package of neo4j anymore. Maybe some of the classes that are publicly used in SDG must be moved out of the *.impl.* package in neo4j. Best regards, James 2011/5/20 Peter Neubauer peter.neuba...@neotechnology.com: Hi there, any solution to this or do we need to dig deeper here? 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://startupbootcamp.org/ - Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Mon, May 16, 2011 at 3:28 PM, Jean-Pierre Bergamin jpberga...@gmail.comwrote: This could be the problem, yes. The repository factories that create the repositories from the interface definitions would need to import the domain specific packages that contain the interfaces to have access to them - which requires buddy loading. It seems as if the CGLIB enhanced class org.springframework.data.graph.neo4j.config.Neo4jConfiguration cannot be created when the app starts up. This is the relevant part of the log file: [2011-05-16 15:10:49.467] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Creating shared instance of singleton bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' [2011-05-16 15:10:49.467] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Creating instance of bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a]: AutowiredFieldElement for private javax.validation.Validator org.springframework.data.graph.neo4j.config.Neo4jConfiguration.validator [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a]: AutowiredMethodElement for public void org.springframework.data.graph.neo4j.config.Neo4jConfiguration.setGraphDatabaseService(org.neo4j.graphdb.GraphDatabaseService) [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a]: AutowiredMethodElement for public void org.springframework.data.graph.neo4j.config.Neo4jConfiguration.setEntityManagerFactory(javax.persistence.EntityManagerFactory) [2011-05-16 15:10:49.471] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Eagerly caching bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' to allow for resolving potential circular references [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.CachedIntrospectionResults Getting BeanInfo for class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a] [2011-05-16 15:10:49.472] region-dm-3 org.springframework.osgi.util.DebugUtils Could not find class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70aBeanInfo] required by [neo4j.domain(com.example.neo4j.domain)] scanning available bundles [2011-05-16 15:10:49.472] region-dm-3 org.springframework.osgi.util.DebugUtils Class is correctly imported as version [1.0.0], checking providing bundles [2011-05-16 15:10:49.476] region-dm-3 org.springframework.osgi.util.DebugUtils Bundle [Spring Data Neo4J (org.springframework.data.neo4j)] exports [org.springframework.data.graph.neo4j.config] as version [1.1.0.BUILD-SNAPSHOT] but version [1.0.0] was required [2011-05-16 15:10:49.477] region-dm-3 org.springframework.osgi.util.DebugUtils Could not find class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330BeanInfo] required by [neo4j.domain(com.example.neo4j.domain)] scanning available bundles [2011-05-16 15:10:49.477] region-dm-3 org.springframework.osgi.util.DebugUtils Class is
Re: [Neo4j] Spring Data Graph in an OSGi environment
What we are currently using inside of SDG are: * TX/XA-Manager Implementations and Providers org.springframework.data.graph.neo4j.config (2 usages) Neo4jConfiguration.java (2 usages) (23: 24) import org.neo4j.kernel.impl.transaction.SpringTransactionManager; (24: 24) import org.neo4j.kernel.impl.transaction.UserTransactionImpl; org.springframework.data.graph.neo4j.transaction (6 usages) SpringProvider.java (4 usages) (20: 24) import org.neo4j.kernel.impl.core.KernelPanicEventGenerator; (21: 24) import org.neo4j.kernel.impl.transaction.AbstractTransactionManager; (22: 24) import org.neo4j.kernel.impl.transaction.TransactionManagerProvider; (23: 24) import org.neo4j.kernel.impl.transaction.TxFinishHook; SpringServiceImpl.java (2 usages) (19: 24) import org.neo4j.kernel.impl.transaction.AbstractTransactionManager; (20: 24) import org.neo4j.kernel.impl.transaction.XaDataSourceManager; * LuceneIndex Implementations (but that is minor and can be removed) org.springframework.data.graph.neo4j.support (2 usages) DelegatingGraphDatabase.java (1 usage) (23: 23) import org.neo4j.index.impl.lucene.LuceneIndexImplementation; GraphDatabaseContext.java (1 usage) (25: 23) import org.neo4j.index.impl.lucene.LuceneIndexImplementation; * Exceptions for Exception-Translation org.springframework.data.graph.neo4j.template (7 usages) Neo4jExceptionTranslator.java (7 usages) (22: 23) import org.neo4j.index.impl.lucene.QueryNotPossibleException; (24: 24) import org.neo4j.kernel.impl.core.ReadOnlyDbException; (25: 24) import org.neo4j.kernel.impl.nioneo.store.StoreFailureException; (26: 24) import org.neo4j.kernel.impl.persistence.IdGenerationFailedException; (27: 24) import org.neo4j.kernel.impl.transaction.IllegalResourceException; (28: 24) import org.neo4j.kernel.impl.transaction.LockException; (29: 24) import org.neo4j.kernel.impl.transaction.xaframework.ReadPastEndException; The last could be done by String comparision which I wouldn't like, the lucene impl dependency could be removed (is just about using the same config as internally) but the TX stuff would have to be moved (imho). Cheers Michael Am 23.05.2011 um 15:44 schrieb Jean-Pierre Bergamin: I have not spent much more time trying to get SDG running as a bundle any more. I'll give it another shot today or tomorrow and let you know how I'm proceeding. What definitively has to be done is fixing the package imports of SDG and the package exports of neo4j (see https://jira.springsource.org/browse/DATAGRAPH-88) so that SDG is not using *.impl.* package of neo4j anymore. Maybe some of the classes that are publicly used in SDG must be moved out of the *.impl.* package in neo4j. Best regards, James 2011/5/20 Peter Neubauer peter.neuba...@neotechnology.com: Hi there, any solution to this or do we need to dig deeper here? 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://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Mon, May 16, 2011 at 3:28 PM, Jean-Pierre Bergamin jpberga...@gmail.comwrote: This could be the problem, yes. The repository factories that create the repositories from the interface definitions would need to import the domain specific packages that contain the interfaces to have access to them - which requires buddy loading. It seems as if the CGLIB enhanced class org.springframework.data.graph.neo4j.config.Neo4jConfiguration cannot be created when the app starts up. This is the relevant part of the log file: [2011-05-16 15:10:49.467] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Creating shared instance of singleton bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' [2011-05-16 15:10:49.467] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Creating instance of bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class
Re: [Neo4j] Spring Data Graph in an OSGi environment
Jean-Pierre, do you know which classes exactly are the offending ones in neo4j *impl? Would like to know in order to either avoid suing them or move them into the API. 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://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Mon, May 23, 2011 at 3:44 PM, Jean-Pierre Bergamin jpberga...@gmail.comwrote: I have not spent much more time trying to get SDG running as a bundle any more. I'll give it another shot today or tomorrow and let you know how I'm proceeding. What definitively has to be done is fixing the package imports of SDG and the package exports of neo4j (see https://jira.springsource.org/browse/DATAGRAPH-88) so that SDG is not using *.impl.* package of neo4j anymore. Maybe some of the classes that are publicly used in SDG must be moved out of the *.impl.* package in neo4j. Best regards, James 2011/5/20 Peter Neubauer peter.neuba...@neotechnology.com: Hi there, any solution to this or do we need to dig deeper here? 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://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Mon, May 16, 2011 at 3:28 PM, Jean-Pierre Bergamin jpberga...@gmail.comwrote: This could be the problem, yes. The repository factories that create the repositories from the interface definitions would need to import the domain specific packages that contain the interfaces to have access to them - which requires buddy loading. It seems as if the CGLIB enhanced class org.springframework.data.graph.neo4j.config.Neo4jConfiguration cannot be created when the app starts up. This is the relevant part of the log file: [2011-05-16 15:10:49.467] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Creating shared instance of singleton bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' [2011-05-16 15:10:49.467] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Creating instance of bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a]: AutowiredFieldElement for private javax.validation.Validator org.springframework.data.graph.neo4j.config.Neo4jConfiguration.validator [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a]: AutowiredMethodElement for public void org.springframework.data.graph.neo4j.config.Neo4jConfiguration.setGraphDatabaseService(org.neo4j.graphdb.GraphDatabaseService) [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.factory.annotation.InjectionMetadata Found injected element on class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a]: AutowiredMethodElement for public void org.springframework.data.graph.neo4j.config.Neo4jConfiguration.setEntityManagerFactory(javax.persistence.EntityManagerFactory) [2011-05-16 15:10:49.471] region-dm-3 o.s.beans.factory.support.DefaultListableBeanFactory Eagerly caching bean 'org.springframework.data.graph.neo4j.config.Neo4jConfiguration#0' to allow for resolving potential circular references [2011-05-16 15:10:49.471] region-dm-3 org.springframework.beans.CachedIntrospectionResults Getting BeanInfo for class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70a] [2011-05-16 15:10:49.472] region-dm-3 org.springframework.osgi.util.DebugUtils Could not find class [org.springframework.data.graph.neo4j.config.Neo4jConfiguration$$EnhancerByCGLIB$$775b2448$$EnhancerByCGLIB$$e7c2c330$$EnhancerByCGLIB$$4422c70aBeanInfo] required by [neo4j.domain(com.example.neo4j.domain)] scanning available bundles [2011-05-16 15:10:49.472] region-dm-3
Re: [Neo4j] Unable to Get Backup to Run
Kevin, could you please zip the contents of your data/log directory and the messages.log and send them off list to me, so we can have a look at your problem? 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://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Mon, May 23, 2011 at 12:45 PM, Mattias Persson matt...@neotechnology.com wrote: Hmm, no it does not. There has got to be something else going on... the log message you pasted doesn't really say anything, just that a connection timed out and the server noticed that. 2011/5/22 Kevin Dieter kevin.die...@megree.com Here's what I see in the messages.log when I tried the backup command: Fri May 20 07:00:24 PDT 2011: Found dead channel [id: 0x3d36acb6, / 127.0.0.1:56110 : /127.0.0.1:6362], SlaveContext[ID:0, eventIdentifier:0, [(lucene-index, 15726285), (nioneodb, 38747027)]] Fri May 20 07:00:24 PDT 2011: Removed [id: 0x3d36acb6, /127.0.0.1:56110: / 127.0.0.1:6362], SlaveContext[ID:0, eventIdentifier:0, [(lucene-index, 15726285), (nioneodb, 38747027)]] It also seems the server becomes somewhat unstable after this and eventually I need to stop and restart it (and it always seems to detect it as a non-clean shutdown and spends a fair amount of time applying transactions to restore the state of the server). Does this help? Kevin On Fri, May 20, 2011 at 4:42 PM, Mattias Persson matt...@neotechnology.comwrote: Could you post the contents of the messages.log from the database directory? It may be that it encounters an exception on the database you're getting the backup from. If you're running neo4j server the file would be neo4j-server-directory\data\graph.db\messages.log or if you run an embedded database it would be neo4j-database-directory\messages.log. That would could give hints about the problem. Are you seeing more/other stacktraces btw? Could you post full stacktraces? 2011/5/20 Kevin Dieter kevin.die...@megree.com Hi, I am trying to set up a scheduled backup for my neo4j database and I have been unable to get the backup to run. See below for the commands I am running (first to do a full backup and then incremental). The weird thing is that I was able to run the full backup, and incremental successfully last night using the exact same commands. Any idea why I am getting the timeout exception? Thanks, Kevin --- C:\cURLC:\neo4J\neo4j-enterprise-1.3-windows\bin\neo4jbackup -full -from single://localhost:6362 -to c:/neo4J-backup Performing full backup from 'single://localhost:6362' Exception in thread main java.lang.RuntimeException: c:/neo4J-backup already contains a database at org.neo4j.backup.OnlineBackup.full(OnlineBackup.java:69) at org.neo4j.backup.BackupTool.doBackup(BackupTool.java:119) at org.neo4j.backup.BackupTool.main(BackupTool.java:83) C:\cURLC:\neo4J\neo4j-enterprise-1.3-windows\bin\neo4jbackup -incremental -from single://localhost:6362 -to c:/neo4J-backup Performing incremental backup from 'single://localhost:6362' Couldn't connect to 'single://localhost:6362', org.neo4j.com.ComException: org.jboss.netty.handler.queue.BlockingReadTimeoutException ___ 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
Re: [Neo4j] ClosedChannelExceptions in highly concurrent environment
Hi Tobias,
Looks like the environment is still setup, so I should be able to attempt a
repro with a patched version. Let me know what you would like me to use.
Thanks,
Jennifer
From: user-boun...@lists.neo4j.org [user-boun...@lists.neo4j.org] On Behalf Of
Tobias Ivarsson [tobias.ivars...@neotechnology.com]
Sent: Monday, May 16, 2011 11:01 PM
To: Neo4j user discussions
Subject: Re: [Neo4j] ClosedChannelExceptions in highly concurrent environment
Hi Jennifer,
Could you reproduce it on your side by doing the same kind of systems tests
again? If you could then I'd be very happy if you could try a patched
version that we have been working on and see if that fixes the issue.
Cheers,
Tobias
On Tue, May 17, 2011 at 2:49 AM, Jennifer Hickey jhic...@vmware.com wrote:
Hi Tobias,
Unfortunately I don't have an isolated test case, as I was doing a fairly
involved system test at the time. I may be able to have a colleague work on
reproducing it at a later date (I've been diverted to something else for the
moment).
I was remote debugging with Eclipse, so I toggled a method breakpoint on
Thread.interrupt() and then inspected the stack once the breakpoint was hit.
Sorry I don't have more information at the moment. I agree that
eliminating the interrupts sounds like the best approach, if possible.
Thanks,
Jennifer
From: user-boun...@lists.neo4j.org [user-boun...@lists.neo4j.org] On
Behalf Of Tobias Ivarsson [tobias.ivars...@neotechnology.com]
Sent: Thursday, April 28, 2011 6:23 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] ClosedChannelExceptions in highly concurrent
environment
Hi Jennifer,
I'd first like to thank you for the testing and analysis you've done. Very
useful stuff. Do you think you could send some test code our way that
reproduces this issue?
This is actually the first time this issue has been reported, so I wouldn't
say it is a common issue. My guess is that your thread volume triggered a
rare condition that wouldn't be encountered otherwise.
I'm also curious to know how you found the source of the interruptions.
When
I debug thread interruptions I've never been able to find out where the
thread got interrupted from without doing tedious procedures of breakpoint
+
logging + trying to match thread ids. If you have a better method for doing
that I'd very much like to know.
I think we should focus the effort on fixing the interruption issue if we
can. And I believe we would be able to do that if the interruptions do in
fact originate from where you say they do. But the suggestion of being able
to switch the lucene directory implementation is still interesting, but as
you point out since it has issues on some platforms it would be better if
we
could be rid of the interruption issue.
Cheers,
Tobias
On Thu, Apr 28, 2011 at 12:41 AM, Jennifer Hickey jhic...@vmware.com
wrote:
Hello,
I've been running some tests w/approx 400 threads reading various indexed
property values. I'm running on 64 bit Linux. I was frequently seeing
the
ClosedChannelException below. The javadoc on Lucene's NIOFSDirectory
states
that Accessing this class either directly or indirectly from a thread
while
it's interrupted can close the underlying file descriptor immediately if
at
the same time the thread is blocked on IO. The file descriptor will
remain
closed and subsequent access to {@link NIOFSDirectory} will throw a
{@link
ClosedChannelException}. If your application uses either {@link
Thread#interrupt()} or {@link Future#cancel(boolean)} you should use
{@link
SimpleFSDirectory} in favor of {@link NIOFSDirectory}.
A bit of debugging revealed that the Thread.interrupts were coming from
Neo4j, specifically in RWLock and MappedPersistenceWindow. So it seems
like
this would be a common problem, though perhaps I am missing something?
SimpleFSDirectory seems a bit of a performance bottleneck, so I switched
to
MMapDirectory and the problem did go away. I didn't see a way to switch
implementations w/out modifying neo4j code, so I changed LuceneDataSource
as
follows:
static Directory getDirectory( String storeDir,
IndexIdentifier identifier ) throws IOException
{
MMapDirectory dir=new MMapDirectory(getFileDirectory( storeDir,
identifier), null);
if(MMapDirectory.UNMAP_SUPPORTED) {
dir.setUseUnmap(true);
}
return dir;
}
So I'm wondering if others have seen this problem and/or if there is a
recommended solution? Our product runs on quite a few different
operating
systems, so I have some reservations about using MMapDirectory as well
(javadoc speaks of a few caveats on Windows, 64 vs 32, etc). Also, I'd
rather not maintain a patched version of the neo4j code if avoidable.
Thanks!
Jennifer
Exception:
Caused by: java.nio.channels.ClosedChannelException
[Neo4j] Some feedback about the installation on Ubuntu 10.04.2 (LTS)
Hello, I have installed Neo4j on Ubuntu 10.04.2 using the latest community edition release (1.4.M02). I created a neo4j user with an home in /opt/neo4j, unpacked the archive in there and chowned everything to the neo4j user and group. I have noticed some very questionable permissions in the archive with almost every file in (that is, setuid, setgid and sticky bits set) and almost each directory in 777 too. A simple `tar -zttf release.tar.gz | less' will confirm that. Once launched, Neo4j created a lot of files in /tmp with open permissions (666) and the most scary of them is a shared library: libjansi-1.5.so. I wonder what will happen if I replace this library with an home brewed version. Best regards -- Louis Opter ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Neo Index Framework Question
I see in the LuceneTimeline how I can do a reverse query (e.g. most recent stuff first), but I don't see any way to do so in a generic numeric range query. Does this exist at all today? We have a need for a composite query (date between x and y and type = Cheese and mouseName = Mickey). I know how I could tackle this with Lucene, but not with the Neo wrapper. Thanks! Rick ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Neo Index Framework Question
Forgot to mention, I want the most recent matches first. I was thinking I could do this via a sort after the fact, but that would require retrieving a ton of records first. Then I thought about combining .sort(xxx) with .top(nnn), but again, I didn't know if it would be applied after a zillion matches in the numeric range occurred first. Thanks for any advice. -Original Message- From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On Behalf Of Rick Bullotta Sent: Monday, May 23, 2011 4:08 PM To: Neo4j user discussions Subject: [Neo4j] Neo Index Framework Question Importance: High I see in the LuceneTimeline how I can do a reverse query (e.g. most recent stuff first), but I don't see any way to do so in a generic numeric range query. Does this exist at all today? We have a need for a composite query (date between x and y and type = Cheese and mouseName = Mickey). I know how I could tackle this with Lucene, but not with the Neo wrapper. Thanks! Rick ___ 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] high IO waits on concurrent access to neo4j
Hi Peter, Thanks for the reply. I made some more tests and here are the results: The store files for the test take 20GB. I increased the memorymapped to 3GB but this did not really improve the results that much as the queries hit random parts of the store and are not really supposed to be repeated often... So I guess that neo4j keeps loading parts of the store into memory as the asked data is not already loaded. Then I moved the store files to a SSD and the results are much better indeed! It can now handle around 300 queries per second 100ms (reading ~13MB/S from the SSD). And the response times degrades much more gracefully after that. From what I read on the mailing list, a better solution would probably be to implement cache sharding in order to redirect each query to a specific instance that would be more likely to have the data in memory. I think I'll try that next, but I have to find the time! Regards, Vincent On Fri, May 20, 2011 at 3:31 PM, Peter Neubauer peter.neuba...@neotechnology.com wrote: Vincent, I think this is quite normal for your setup. Since you have not much memory, and a lot of data, you are hitting cold nodes pretty often, especially when the caches are full after a while. Then, it is a matter of how fast you can access the disk. How big are your store files? To improve IO, you either can increase RAM, or get faster disk IO by e.g. using SSD or even trying out setting up a RAM disk to verify this theory. Could you try that and report back? 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://startupbootcamp.org/- Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Wed, May 18, 2011 at 12:25 PM, Vincent Boulaye vboul...@gmail.com wrote: Hi, I am currently evaluating neo4j for a new project, and I am getting a lot of IO reads (and waits) during my tests. I'm wondering whether this is expected or not... Here are some more details about the test: The target application should handle around 5 billions nodes and as many relations. Half of the nodes will hold 5 small String/date properties the other half must hold 10 properties on average. (only 2 or 3 are indexed) Nowadays the nodes are distributed as small trees of around 100 nodes, but they will become more and more interconnected in the future. I did a first batch load with 100 million nodes, 100 million relations, 400 million properties. This took less than 2 hours on my test machine (core i7, 4GB ram), and I was quite happy at this point! Then I tried to test concurrent access to the data. I built a small web service that query a main node by an indexed property, then browse the tree of connected nodes (~100 nodes) and return them (reading ~400 properties to build the response). I use the embedded graph db, and I didn't give a lot of memory to neo4j for the memory mapping (~1GO) because in the target application, I won't be able to put everything in memory anyway. The heap is configured at 1MB. The server is an ubuntu 10.10, using the sun jdk 1.6.21. When the test start, I suppose that all queries hit the memory because all queries answer in 50ms 90%percentile, which is perfect!. But then after a while when I reach around 30 concurrent clients (each making 1 query/s), the response time becomes erratic, half of the time the response still comes back in less than 100ms, but the other half is closer to 1s. In visualvm I see that several threads are often blocked (apparently in PersistenceWindowPool and usually for ~1s). And in vmstat I see a lot of disk reads (~3MB/s) and IO waits 10%. During my tests I played with the amount of mapped memory, I tried the different types of caches and the readonly graphdatabase, but the problem always appear after a while. I also tried neo4j 1.3 and 1.4M02 with the same results. Sometimes the application seems almost stable with reads ~1OOkB/s and IO wait 2% but this never last very long. I am wondering if this behaviour is normal and whether I am just supposed to put more RAM in the server or if there is something wrong in my setup ? Thanks Regards, Vincent ___ 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] question about remove and iterate in same transaction
hello list, I wonder when a node will be removed in a transaction, since I have a transaction in which I delete a node in the graph, but I need to iterate lso nodes of the graph in the same transaction thanks, cheers ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
