Clustering in Neo4j

Navrattan Yadav

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Mar 12, 2014, 4:40:58 AM3/12/14

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hi i am using Neo4j 2.0. i use Java Api to create database ( node and relation) GraphDatabaseFactory.

i want to cluster the db . is it possible ?

i am not using any Neo4j server nor RestAPI.

Michael Hunger

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Mar 12, 2014, 5:09:18 AM3/12/14

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Yes, see: http://docs.neo4j.org/chunked/stable/tutorials-java-embedded-setup.html#editions

You would use this API http://components.neo4j.org/neo4j-enterprise/2.0.0/apidocs/org/neo4j/graphdb/factory/HighlyAvailableGraphDatabaseFactory.html#newHighlyAvailableDatabaseBuilder(java.lang.String)

and pass in your HA config e.g. read from a file (e.g. with http://api.neo4j.org/2.0.0/org/neo4j/helpers/collection/MapUtil.html#load(java.io.File))

or manually.

Cheers,

Michael

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Navrattan Yadav

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Mar 12, 2014, 5:19:00 AM3/12/14

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thanks Michael.

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Thanks and Regards

Navrattan Yadav

Navrattan Yadav

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Mar 13, 2014, 4:15:38 AM3/13/14

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i try to use HighlyAvailableGraphDatabaseFactory but got following error.. i tryed but not found any jar in 2.0 for class RequestContext

Exception in thread "main" java.lang.NoClassDefFoundError: org/neo4j/com/RequestContext

at java.lang.Class.getDeclaredMethods0(Native Method)

at java.lang.Class.privateGetDeclaredMethods(Class.java:2521)

at java.lang.Class.privateGetPublicMethods(Class.java:2641)

at java.lang.Class.getMethods(Class.java:1457)

at sun.misc.ProxyGenerator.generateClassFile(ProxyGenerator.java:426)

at sun.misc.ProxyGenerator.generateProxyClass(ProxyGenerator.java:323)

at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:636)

at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:722)

at org.neo4j.kernel.ha.HighlyAvailableGraphDatabase.create(HighlyAvailableGraphDatabase.java:165)

at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:304)

at org.neo4j.kernel.ha.HighlyAvailableGraphDatabase.<init>(HighlyAvailableGraphDatabase.java:157)

at org.neo4j.graphdb.factory.HighlyAvailableGraphDatabaseFactory$1.newDatabase(HighlyAvailableGraphDatabaseFactory.java:47)

at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:197)

at com.migrate.work.Migrate.sample(Migrate.java:19)

at com.migrate.work.Migrate.main(Migrate.java:52)

Caused by: java.lang.ClassNotFoundException: org.neo4j.com.RequestContext

at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

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