我正在阅读《七周七个数据库》一书Neo4j部分。我在第二天的大数据部分。我能够下载电影数据库数据集示例(cineasts_12k_movies_50k_actors.db(并将其移动到data/databases。然后我注释掉dbms.active_database=graph.db并添加了该行
dbms.active_database=movies.db
在/conf folderneo4j.conf文件中。
根据书中的说明，我应该进入同一个文件(neo4j.conf(取消注释该行：
#dbms.allow_format_migrations=true
但是文件中不存在这样的行。并将其添加到配置文件中会引发以下错误：
C:Usersw3sDesktopNEO4J_HOMEneo4j-enterprise-3.4.6-windowsneo4j-enterprise-
3.4.6bin>neo4j console
2018-08-24 03:37:28.996+0000 WARN Unknown config option: dbms.allow_format_migr
ations
2018-08-24 03:37:29.076+0000 INFO ======== Neo4j 3.4.6 ========
2018-08-24 03:37:29.170+0000 INFO Starting...
2018-08-24 03:37:33.672+0000 INFO Initiating metrics...
2018-08-24 03:37:34.180+0000 ERROR Failed to start Neo4j: Starting Neo4j failed:
Component 'org.neo4j.server.database.LifecycleManagingDatabase@6db66836' was su
ccessfully initialized, but failed to start. Please see the attached cause excep
tion "Unknown store version 'v0.A.3'". Starting Neo4j failed: Component 'org.neo
4j.server.database.LifecycleManagingDatabase@6db66836' was successfully initiali
zed, but failed to start. Please see the attached cause exception "Unknown store
version 'v0.A.3'".
org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.n
eo4j.server.database.LifecycleManagingDatabase@6db66836' was successfully initia
lized, but failed to start. Please see the attached cause exception "Unknown sto
re version 'v0.A.3'".
at org.neo4j.server.exception.ServerStartupErrors.translateToServerStart
upError(ServerStartupErrors.java:68)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:220)
at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:111
)
at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:79)
at com.neo4j.server.enterprise.CommercialEntryPoint.main(CommercialEntry
Point.java:22)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.s
erver.database.LifecycleManagingDatabase@6db66836' was successfully initialized,
but failed to start. Please see the attached cause exception "Unknown store ver
sion 'v0.A.3'".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:466)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:212)
... 3 more
Caused by: java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.fact
ory.GraphDatabaseFacadeFactory, C:Usersw3sDesktopNEO4J_HOMEneo4j-enterprise
-3.4.6-windowsneo4j-enterprise-3.4.6datadatabasesmovies.db
at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(G
raphDatabaseFacadeFactory.java:212)
at org.neo4j.kernel.enterprise.EnterpriseGraphDatabase.<init>(Enterprise
GraphDatabase.java:39)
at org.neo4j.server.enterprise.OpenEnterpriseNeoServer.lambda$static$1(O
penEnterpriseNeoServer.java:78)
at org.neo4j.server.database.LifecycleManagingDatabase.start(LifecycleMa
nagingDatabase.java:88)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
... 5 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.k
ernel.NeoStoreDataSource@4152d38d' was successfully initialized, but failed to s
tart. Please see the attached cause exception "Unknown store version 'v0.A.3'".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:466)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start(DataS
ourceManager.java:100)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(G
raphDatabaseFacadeFactory.java:208)
... 9 more
Caused by: java.lang.IllegalArgumentException: Unknown store version 'v0.A.3'
at org.neo4j.kernel.impl.store.format.RecordFormatSelector.selectForVers
ion(RecordFormatSelector.java:101)
at org.neo4j.kernel.impl.store.NeoStores.verifyRecordFormat(NeoStores.ja
va:211)
at org.neo4j.kernel.impl.store.NeoStores.<init>(NeoStores.java:143)
at org.neo4j.kernel.impl.store.StoreFactory.openNeoStores(StoreFactory.j
ava:160)
at org.neo4j.kernel.impl.store.StoreFactory.openAllNeoStores(StoreFactor
y.java:124)
at org.neo4j.kernel.impl.storageengine.impl.recordstorage.RecordStorageE
ngine.<init>(RecordStorageEngine.java:200)
at org.neo4j.kernel.NeoStoreDataSource.buildStorageEngine(NeoStoreDataSo
urce.java:574)
at org.neo4j.kernel.NeoStoreDataSource.start(NeoStoreDataSource.java:434
)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
... 14 more
2018-08-24 03:37:34.183+0000 INFO Neo4j Server shutdown initiated by request
从在线研究中，它(#dbms.allow_format_migrations=true(似乎是一个折旧的配置选项。然后我去了A.1。https://neo4j.com/docs/operations-manual/current/reference/configuration-settings/的配置设置，从我在那里可以得出的结论来看(我自己的结论(我可以取消注释dbms.allow_upgrade代替dbms.allow_format_migrations(不可用/现已贬值(，但我得到以下错误：
C:Usersw3sDesktopNEO4J_HOMEneo4j-enterprise-3.4.6-windowsneo4j-enterprise-
3.4.6bin>neo4j console
2018-08-24 03:42:32.958+0000 INFO ======== Neo4j 3.4.6 ========
2018-08-24 03:42:33.031+0000 INFO Starting...
2018-08-24 03:42:36.413+0000 INFO Initiating metrics...
2018-08-24 03:42:36.787+0000 INFO Starting upgrade of database
2018-08-24 03:42:36.807+0000 ERROR Failed to start Neo4j: Starting Neo4j failed:
Component 'org.neo4j.server.database.LifecycleManagingDatabase@759fad4' was suc
cessfully initialized, but failed to start. Please see the attached cause except
ion "Not possible to upgrade a store with version 'v0.A.3' to current store vers
ion `v0.A.9` (Neo4j 3.4.6).". Starting Neo4j failed: Component 'org.neo4j.server
.database.LifecycleManagingDatabase@759fad4' was successfully initialized, but f
ailed to start. Please see the attached cause exception "Not possible to upgrade
a store with version 'v0.A.3' to current store version `v0.A.9` (Neo4j 3.4.6)."
.
org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.n
eo4j.server.database.LifecycleManagingDatabase@759fad4' was successfully initial
ized, but failed to start. Please see the attached cause exception "Not possible
to upgrade a store with version 'v0.A.3' to current store version `v0.A.9` (Neo
4j 3.4.6).".
at org.neo4j.server.exception.ServerStartupErrors.translateToServerStart
upError(ServerStartupErrors.java:68)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:220)
at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:111
)
at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:79)
at com.neo4j.server.enterprise.CommercialEntryPoint.main(CommercialEntry
Point.java:22)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.s
erver.database.LifecycleManagingDatabase@759fad4' was successfully initialized,
but failed to start. Please see the attached cause exception "Not possible to up
grade a store with version 'v0.A.3' to current store version `v0.A.9` (Neo4j 3.4
.6).".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:466)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:212)
... 3 more
Caused by: java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.fact
ory.GraphDatabaseFacadeFactory, C:Usersw3sDesktopNEO4J_HOMEneo4j-enterprise
-3.4.6-windowsneo4j-enterprise-3.4.6datadatabasesmovies.db
at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(G
raphDatabaseFacadeFactory.java:212)
at org.neo4j.kernel.enterprise.EnterpriseGraphDatabase.<init>(Enterprise
GraphDatabase.java:39)
at org.neo4j.server.enterprise.OpenEnterpriseNeoServer.lambda$static$1(O
penEnterpriseNeoServer.java:78)
at org.neo4j.server.database.LifecycleManagingDatabase.start(LifecycleMa
nagingDatabase.java:88)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
... 5 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.k
ernel.NeoStoreDataSource@cf65451' was successfully initialized, but failed to st
art. Please see the attached cause exception "Not possible to upgrade a store wi
th version 'v0.A.3' to current store version `v0.A.9` (Neo4j 3.4.6).".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:466)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start(DataS
ourceManager.java:100)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(G
raphDatabaseFacadeFactory.java:208)
... 9 more
Caused by: org.neo4j.kernel.impl.storemigration.StoreUpgrader$UnexpectedUpgradin
gStoreVersionException: Not possible to upgrade a store with version 'v0.A.3' to
current store version `v0.A.9` (Neo4j 3.4.6).
at org.neo4j.kernel.impl.storemigration.UpgradableDatabase.checkUpgradea
ble(UpgradableDatabase.java:122)
at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrateStore(Store
Upgrader.java:141)
at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrateIfNeeded(St
oreUpgrader.java:122)
at org.neo4j.kernel.impl.storemigration.DatabaseMigrator.migrate(Databas
eMigrator.java:100)
at org.neo4j.kernel.NeoStoreDataSource.upgradeStore(NeoStoreDataSource.j
ava:564)
at org.neo4j.kernel.NeoStoreDataSource.start(NeoStoreDataSource.java:419
)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
... 14 more
2018-08-24 03:42:36.810+0000 INFO Neo4j Server shutdown initiated by request
然后，我注释掉了"dbms.allow_upgrade"行并再次运行neo4j控制台以在cmd上启动服务器，并得到以下错误：
C:Usersw3sDesktopNEO4J_HOMEneo4j-enterprise-3.4.6-windowsneo4j-enterprise-
3.4.6bin>neo4j console
2018-08-24 03:49:20.922+0000 INFO ======== Neo4j 3.4.6 ========
2018-08-24 03:49:21.008+0000 INFO Starting...
2018-08-24 03:49:24.533+0000 INFO Initiating metrics...
2018-08-24 03:49:25.557+0000 ERROR Failed to start Neo4j: Starting Neo4j
failed:
Component 'org.neo4j.server.database.LifecycleManagingDatabase@9cd25ff' was suc
cessfully initialized, but failed to start. Please see the attached cause except
ion "Unknown store version 'v0.A.3'". Starting Neo4j failed: Component 'org.neo4
j.server.database.LifecycleManagingDatabase@9cd25ff' was successfully initialize
d, but failed to start. Please see the attached cause exception "Unknown store v
ersion 'v0.A.3'".
org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.n
eo4j.server.database.LifecycleManagingDatabase@9cd25ff' was successfully initial
ized, but failed to start. Please see the attached cause exception "Unknown stor
e version 'v0.A.3'".
at org.neo4j.server.exception.ServerStartupErrors.translateToServerStart
upError(ServerStartupErrors.java:68)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:220)
at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:111
)
at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:79)
at com.neo4j.server.enterprise.CommercialEntryPoint.main(CommercialEntry
Point.java:22)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.s
erver.database.LifecycleManagingDatabase@9cd25ff' was successfully initialized,
but failed to start. Please see the attached cause exception "Unknown store vers
ion 'v0.A.3'".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:466)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:212)
... 3 more
Caused by: java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.fact
ory.GraphDatabaseFacadeFactory, C:Usersw3sDesktopNEO4J_HOMEneo4j-enterprise
-3.4.6-windowsneo4j-enterprise-3.4.6datadatabasesmovies.db
at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(G
raphDatabaseFacadeFactory.java:212)
at org.neo4j.kernel.enterprise.EnterpriseGraphDatabase.<init>(Enterprise
GraphDatabase.java:39)
at org.neo4j.server.enterprise.OpenEnterpriseNeoServer.lambda$static$1(O
penEnterpriseNeoServer.java:78)
at org.neo4j.server.database.LifecycleManagingDatabase.start(LifecycleMa
nagingDatabase.java:88)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
... 5 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.k
ernel.NeoStoreDataSource@7a11c4c7' was successfully initialized, but failed to s
tart. Please see the attached cause exception "Unknown store version 'v0.A.3'".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:466)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start(DataS
ourceManager.java:100)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:107)
at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.initFacade(G
raphDatabaseFacadeFactory.java:208)
... 9 more
Caused by: java.lang.IllegalArgumentException: Unknown store version 'v0.A.3'
at org.neo4j.kernel.impl.store.format.RecordFormatSelector.selectForVers
ion(RecordFormatSelector.java:101)
at org.neo4j.kernel.impl.store.NeoStores.verifyRecordFormat(NeoStores.ja
va:211)
at org.neo4j.kernel.impl.store.NeoStores.<init>(NeoStores.java:143)
at org.neo4j.kernel.impl.store.StoreFactory.openNeoStores(StoreFactory.j
ava:160)
at org.neo4j.kernel.impl.store.StoreFactory.openAllNeoStores(StoreFactor
y.java:124)
at org.neo4j.kernel.impl.storageengine.impl.recordstorage.RecordStorageE
ngine.<init>(RecordStorageEngine.java:200)
at org.neo4j.kernel.NeoStoreDataSource.buildStorageEngine(NeoStoreDataSo
urce.java:574)
at org.neo4j.kernel.NeoStoreDataSource.start(NeoStoreDataSource.java:434
)
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSu
pport.java:445)
... 14 more
2018-08-24 03:49:25.563+0000 INFO Neo4j Server shutdown initiated by request
请告知解决方法，以便我可以使用示例数据集(然后继续使用其他示例数据集进行练习(。 谢谢你花时间。
注意：我运行的是Windows 7操作系统计算机;我的neo4j版本是trial neo4j-enterprise-3.4.6;我使用cygwin终端cmd提示跟随这本书;我是一个初学者程序员(我知道的不多(。此外，运行 Neo4j 时出现此错误：无法使用版本'v0 升级商店。A.9"到当前商店版本"v0。A.8'(Neo4j 3.3.1(看起来很相似，但没有帮助(那里没有答案(。
我认为这个问题是由neo4j的版本兼容性引起的。 请参阅 https://neo4j.com/developer/kb/store-format-versions/。
这个问题有两种解决方案。一种解决方案是将您使用的neo4j版本降级到2.1.0。另一种方法是手动将数据升级到 0.A.8。
祝你好运！