Neo4j 4.1.0, Database failed to start

Neo4j Graph Platform
1

Hello Community. I have an issue with 4.1.0 which seems to only show up if I create 2 databases in my desktop. The specific error message is:
Database failed to start: DB [database-cb86baa1-23ed-4a1d-9b4d-4498a4805c93] 'v4.1.0' exited with status 'KILLED'. Check the logs

and the log entries:

APOC couln't set a URLStreamHandlerFactory since some other tool already did this (e.g. tomcat). This means you cannot use s3:// or hdfs:// style URLs in APOC. This is caused by a limitation of the JVM which we cannot fix.
2020-06-26 23:20:33.597+0000 INFO Starting...
2020-06-26 23:20:36.381+0000 INFO ======== Neo4j 4.1.0 ========

As far as I know, APOC is current, and I do not have tomcat running on my laptop. I also dont know what "s3://" etc styles are. Would appreciate any help you can provide.

THanks * 1M

2

Had a "killed" issue recently where it turned out that there were two versions of APOC installed in the plugins/ folder of that database. This happened after upgrading via Neo4J Desktop.

Make sure there is only one, and that it is current.

3

Paul can you please assist on this one.

Even after having a single Jar in the plugins folder same failure is shown in the log file.

Neo4J: 4.0.6
Apoc: apoc-4.1.0.1-all.jar

log:
2020-07-21 09:21:56.664+0000 INFO ======== Neo4j 4.0.6 ========

2020-07-21 09:21:56.669+0000 INFO Starting...

2020-07-21 09:21:58.632+0000 ERROR Failed to start Neo4j: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@684b31de' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.configuration.GraphDatabaseInternalSettings". Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@684b31de' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.configuration.GraphDatabaseInternalSettings".

org.neo4j.server.ServerStartupException: Starting Neo4j failed: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@684b31de' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.configuration.GraphDatabaseInternalSettings".

at org.neo4j.server.exception.ServerStartupErrors.translateToServerStartupError(ServerStartupErrors.java:45)

at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:164)

at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:114)

at org.neo4j.server.ServerBootstrapper.start(ServerBootstrapper.java:89)

at org.neo4j.server.CommunityEntryPoint.main(CommunityEntryPoint.java:35)

Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.server.database.LifecycleManagingDatabaseService@684b31de' was successfully initialized, but failed to start. Please see the attached cause exception "org.neo4j.configuration.GraphDatabaseInternalSettings".

at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:465)

at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)

at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:157)

... 3 more

4

hello. I removed all traces of Neo4j on my laptop and reinstalled. This seems to have solved the problems I have been having. Thanks for helping.

5

This is pretty ad-hoc, @rmasrani which community version of neo4j are you using?

@webtic would you please shed some light on the issue for shutdown. Thanks in advance.

6

You have (had?) mixed the Neo4J and APOC versions;

When on Neo4J 4.0 you need the APOC from the 4.0 branch; the latest is
4.0.0.17

The apoc-4.1.0.1-all.jar is for the 4.1 release

7

Hello.

My APOC version is in line with the Neo4j version – both are 4.1

Yet – this am – I got this error again (after I reinstalled everything):

An error occurred during update. Please see the logs.
If this error persists, go to https://neo4j.com/download to download the latest version.

In the log.log file, there are numerous checks but no errors.

The only line in the desktop log file is this:

APOC couln't set a URLStreamHandlerFactory since some other tool already did this (e.g. tomcat). This means you cannot use s3:// or hdfs:// style URLs in APOC. This is caused by a limitation of the JVM which we cannot fix.

I don’t have tomcat installed on my laptop.

This issue isn’t holding anything up. It is just daunting to see an error like this every morning :->

8

This appears to be a known issue ; APOC couln't set a URLStreamHandlerFactory message always there as of apoc 4.1.0.0 - neo4j 4.1.0 · Issue #1571 · neo4j-contrib/neo4j-apoc-procedures · GitHub

9

Thanks for diffing this up Paul. Appreciate it.