Neo4j Graphaware预计算错误：数据库关闭

时间：2017-05-26 05:02:38

标签： neo4j graphaware

当我遇到以下错误时，我正在尝试neo4j graphaware预计算功能：

2017-05-25 12:59:31.876+0000 ERROR [c.g.r.b.RuntimeKernelExtension] Could not start GraphAware Runtime because the database didn't get to a usable state within 5 minutes.
2017-05-25 12:59:31.879+0000 ERROR Failed to start Neo4j: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@16f1582c' was successfully initialized, but failed to start. Please see attached cause exception. Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@16f1582c' was successfully initialized, but failed to start. Please see attached cause exception.
org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabase@16f1582c' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.server.exception.ServerStartupErrors.translateToServerStartupError(ServerStartupErrors.java:68)
    at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:230)
    at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:91)
    at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:68)
    at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:28)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.server.database.LifecycleManagingDatabase@16f1582c' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:443)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
    at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:202)
    ... 3 more
Caused by: java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory, /var/lib/neo4j/data/databases/graph_test_full_test.db
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:199)
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:130)
    at org.neo4j.server.CommunityNeoServer.lambda$static$0(CommunityNeoServer.java:57)
    at org.neo4j.server.database.LifecycleManagingDatabase.start(LifecycleManagingDatabase.java:89)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:433)
    ... 5 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.proc.Procedures@6c038a54' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:443)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(GraphDatabaseFacadeFactory.java:195)
    ... 9 more
Caused by: java.lang.IncompatibleClassChangeError: class org.springframework.core.type.classreading.ClassMetadataReadingVisitor$EmptyMethodVisitor has interface org.springframework.asm.MethodVisitor as super class
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:411)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.neo4j.kernel.impl.proc.ProcedureJarLoader$1.fetchNextOrNull(ProcedureJarLoader.java:138)
    at org.neo4j.kernel.impl.proc.ProcedureJarLoader$1.fetchNextOrNull(ProcedureJarLoader.java:115)
    at org.neo4j.collection.PrefetchingRawIterator.peek(PrefetchingRawIterator.java:50)
    at org.neo4j.collection.PrefetchingRawIterator.hasNext(PrefetchingRawIterator.java:36)
    at org.neo4j.kernel.impl.proc.ProcedureJarLoader.loadProcedures(ProcedureJarLoader.java:89)
    at org.neo4j.kernel.impl.proc.ProcedureJarLoader.loadProceduresFromDir(ProcedureJarLoader.java:80)
    at org.neo4j.kernel.impl.proc.Procedures.start(Procedures.java:206)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:433)
    ... 11 more

我已将必要的jar放在/ plugin目录中。以下是 jar文件：

graphaware-reco-3.1.4.49.11.jar  graphaware-server-community-all-3.1.4.49.jar   my-reco.jar

我还在neo4j.conf中添加了必要的配置，如文档中所述。我查看了graphaware代码。

当"Could not start GraphAware Runtime because the database..."给出错误输出（在我的情况下，即时）时会出现database.isAvailable(5*60*1000)消息，这会导致我得出结论我的数据库正在关闭。我看到日志得到了确切的东西。

以下是日志：

2017-05-25 12:59:30.879+0000 INFO  Attempting to instantiate as a singleton...
2017-05-25 12:59:30.879+0000 DEBUG Not a singleton.
2017-05-25 12:59:30.879+0000 INFO  Attempting to instantiate using public no-arg constructor...
2017-05-25 12:59:30.885+0000 INFO  Success.
2017-05-25 12:59:30.966+0000 INFO  Node Inclusion Policy set to com.graphaware.common.policy.inclusion.composite.CompositeNodeInclusionPolicy@2ae16e60
2017-05-25 12:59:30.966+0000 INFO  Max recommendations set to 30
2017-05-25 12:59:30.966+0000 INFO  Relationship type set to RECOMMEND
2017-05-25 12:59:30.968+0000 INFO  Registering module reco with GraphAware Runtime.
2017-05-25 12:59:30.968+0000 INFO  [c.g.r.b.RuntimeKernelExtension] GraphAware Runtime bootstrapped, starting the Runtime...
2017-05-25 12:59:31.870+0000 INFO  Shutting down GraphAware Runtime...
2017-05-25 12:59:31.870+0000 INFO  Shutting down module reco
2017-05-25 12:59:31.870+0000 INFO  Terminating task scheduler...
2017-05-25 12:59:31.870+0000 INFO  Task scheduler terminated successfully.
2017-05-25 12:59:31.870+0000 INFO  GraphAware Runtime shut down.

有人可以帮我吗？

1 个答案:

答案 0 :(得分：1)

IncompatibleClassChangeError表示某处存在不兼容的类更改。

您正在使用的GraphAware jar文件需要neo4j 3.1.4。确保您运行的是neo4j 3.1.4。此外，如果您编写了任何Java代码，请确保它是使用适用于GraphaAware和neo4j库的版本构建的。

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