【发布时间】：2021-02-11 21:56:36
【问题描述】：
我正在尝试自动将一些数据导入 neo4j（社区服务器），如下所示：每天，我需要删除数据并导入新数据。
在之前的 neo4j 版本（3.x）中，我可以使用以下命令执行 db 数据删除
echo "$(cat /etc/neo4j/neo4j.conf| sed -n 's/.*dbms.directories.data=//p')"/databases/"$(cat /etc/neo4j/neo4j.conf | sed -n 's/.*dbms.active_database=//p')"/* | xargs rm -rf
现在，当我运行相同的命令时，似乎删除了 db，但没有删除事务日志，因此 neo4j 无法启动。
Directories in use:
home: /var/lib/neo4j
config: /etc/neo4j
logs: /var/log/neo4j
plugins: /var/lib/neo4j/plugins
import: /var/lib/neo4j/import
data: /var/lib/neo4j/data
certificates: /var/lib/neo4j/certificates
run: /var/run/neo4j
Starting Neo4j.
WARNING: Max 1024 open files allowed, minimum of 40000 recommended. See the Neo4 j manual.
2021-02-11 21:45:22.869+0000 INFO Starting...
2021-02-11 21:45:24.342+0000 INFO ======== Neo4j 4.2.3 ========
2021-02-11 21:45:32.737+0000 ERROR Failed to start Neo4j on dbms.connector.http.listen_address, a socket address. If missing port or hostname it is acquired from dbms.default_listen_address.
java.lang.RuntimeException: Error starting Neo4j database server at /var/lib/neo4j/data/databases
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:207) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.build(DatabaseManagementServiceFactory.java:163) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.CommunityBootstrapper.createNeo(CommunityBootstrapper.java:36) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.NeoBootstrapper.start(NeoBootstrapper.java:134) [neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.NeoBootstrapper.start(NeoBootstrapper.java:90) [neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:35) [neo4j-4.2.3.jar:4.2.3]
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.dbms.database.DefaultSystemGraphInitializer@5634a861' was successfully initialized, but failed to start. Please see the attached cause exception "Fail to start 'DatabaseId{00000000[system]}' since transaction logs were found, while database files are missing.".
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:463) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:110) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:198) ~[neo4j-4.2.3.jar:4.2.3]
... 5 more
Caused by: java.lang.IllegalStateException: Failed to initialize system graph component: This database is shutdown.
at org.neo4j.dbms.database.SystemGraphComponents.initializeSystemGraph(SystemGraphComponents.java:102) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultSystemGraphInitializer.initializeSystemGraph(DefaultSystemGraphInitializer.java:41) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphInitializer.start(SystemGraphInitializer.java:29) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:442) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:110) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:198) ~[neo4j-4.2.3.jar:4.2.3]
... 5 more
Caused by: org.neo4j.graphdb.DatabaseShutdownException: This database is shutdown.
at org.neo4j.kernel.availability.DatabaseAvailabilityGuard.assertDatabaseAvailable(DatabaseAvailabilityGuard.java:172) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginKernelTransaction(GraphDatabaseFacade.java:197) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransactionInternal(GraphDatabaseFacade.java:176) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:122) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:116) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:104) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTx(GraphDatabaseFacade.java:99) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractSystemGraphComponent.detect(AbstractSystemGraphComponent.java:118) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractSystemGraphComponent.initializeSystemGraph(AbstractSystemGraphComponent.java:93) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphComponents.initializeSystemGraph(SystemGraphComponents.java:92) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultSystemGraphInitializer.initializeSystemGraph(DefaultSystemGraphInitializer.java:41) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphInitializer.start(SystemGraphInitializer.java:29) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:442) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:110) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:198) ~[neo4j-4.2.3.jar:4.2.3]
... 5 more
Suppressed: org.neo4j.graphdb.DatabaseShutdownException: This database is shutdown.
at org.neo4j.kernel.availability.DatabaseAvailabilityGuard.assertDatabaseAvailable(DatabaseAvailabilityGuard.java:172) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginKernelTransaction(GraphDatabaseFacade.java:197) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransactionInternal(GraphDatabaseFacade.java:176) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:122) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:116) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:104) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTx(GraphDatabaseFacade.java:99) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractSystemGraphComponent.detect(AbstractSystemGraphComponent.java:118) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractSystemGraphComponent.initializeSystemGraph(AbstractSystemGraphComponent.java:93) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphComponents.initializeSystemGraph(SystemGraphComponents.java:92) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultSystemGraphInitializer.initializeSystemGraph(DefaultSystemGraphInitializer.java:41) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphInitializer.start(SystemGraphInitializer.java:29) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:442) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:110) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:198) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.build(DatabaseManagementServiceFactory.java:163) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.CommunityBootstrapper.createNeo(CommunityBootstrapper.java:36) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.NeoBootstrapper.start(NeoBootstrapper.java:134) [neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.NeoBootstrapper.start(NeoBootstrapper.java:90) [neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:35) [neo4j-4.2.3.jar:4.2.3]
Caused by: java.lang.RuntimeException: Fail to start 'DatabaseId{00000000[system]}' since transaction logs were found, while database files are missing.
at org.neo4j.kernel.database.Database.validateLogsAndStoreAbsence(Database.java:546) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.database.Database.validateStoreAndTxLogs(Database.java:538) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.database.Database.start(Database.java:419) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.startDatabase(AbstractDatabaseManager.java:187) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:152) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:36) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.forEachDatabase(AbstractDatabaseManager.java:165) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.startAllDatabases(AbstractDatabaseManager.java:112) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.start(AbstractDatabaseManager.java:106) ~[neo4j-4.2.3.jar:4.2.3]
... 8 more
Suppressed: org.neo4j.graphdb.DatabaseShutdownException: This database is shutdown.
at org.neo4j.kernel.availability.DatabaseAvailabilityGuard.assertDatabaseAvailable(DatabaseAvailabilityGuard.java:172) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginKernelTransaction(GraphDatabaseFacade.java:197) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransactionInternal(GraphDatabaseFacade.java:176) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:122) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:116) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:104) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTx(GraphDatabaseFacade.java:99) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractSystemGraphComponent.detect(AbstractSystemGraphComponent.java:118) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractSystemGraphComponent.initializeSystemGraph(AbstractSystemGraphComponent.java:93) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphComponents.initializeSystemGraph(SystemGraphComponents.java:92) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultSystemGraphInitializer.initializeSystemGraph(DefaultSystemGraphInitializer.java:41) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.SystemGraphInitializer.start(SystemGraphInitializer.java:29) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:442) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:110) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:198) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.build(DatabaseManagementServiceFactory.java:163) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.CommunityBootstrapper.createNeo(CommunityBootstrapper.java:36) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.NeoBootstrapper.start(NeoBootstrapper.java:134) [neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.NeoBootstrapper.start(NeoBootstrapper.java:90) [neo4j-4.2.3.jar:4.2.3]
at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:35) [neo4j-4.2.3.jar:4.2.3]
Caused by: java.lang.RuntimeException: Fail to start 'DatabaseId{00000000[system]}' since transaction logs were found, while database files are missing.
at org.neo4j.kernel.database.Database.validateLogsAndStoreAbsence(Database.java:546) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.database.Database.validateStoreAndTxLogs(Database.java:538) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.database.Database.start(Database.java:419) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.startDatabase(AbstractDatabaseManager.java:187) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:152) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:36) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.forEachDatabase(AbstractDatabaseManager.java:165) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.startAllDatabases(AbstractDatabaseManager.java:112) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.start(AbstractDatabaseManager.java:106) ~[neo4j-4.2.3.jar:4.2.3]
... 8 more
Caused by: java.lang.RuntimeException: Fail to start 'DatabaseId{00000000[system]}' since transaction logs were found, while database files are missing.
at org.neo4j.kernel.database.Database.validateLogsAndStoreAbsence(Database.java:546) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.database.Database.validateStoreAndTxLogs(Database.java:538) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.kernel.database.Database.start(Database.java:419) ~[neo4j-kernel-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.startDatabase(AbstractDatabaseManager.java:187) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:152) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.DefaultDatabaseManager.startDatabase(DefaultDatabaseManager.java:36) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.forEachDatabase(AbstractDatabaseManager.java:165) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.startAllDatabases(AbstractDatabaseManager.java:112) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.dbms.database.AbstractDatabaseManager.start(AbstractDatabaseManager.java:106) ~[neo4j-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:442) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:110) ~[neo4j-common-4.2.3.jar:4.2.3]
at org.neo4j.graphdb.facade.DatabaseManagementServiceFactory.startDatabaseServer(DatabaseManagementServiceFactory.java:198) ~[neo4j-4.2.3.jar:4.2.3]
... 5 more
2021-02-11 21:45:32.746+0000 INFO Neo4j Server shutdown initiated by request
有什么线索可以做什么吗？手动删除数据文件夹的全部内容并没有多大帮助，因为对 db 的身份验证，以允许导入不再起作用。
【问题讨论】：