Cannot Create a Space & log shows, "Package Scanner found duplicates for package 'javax.annotation'"

Question

After upgrading to Confluence 6.13, the log file contains the following warning:

[org.twdata.pkgscanner.ExportPackageListBuilder] logDuplicateWarning Package Scanner found duplicates for package 'javax.annotation' with different versions. Files: javax.annotation-api-1.3.2.jar and jsr305-3.0.1.jar
  '/opt/atlassian/confluence/confluence/WEB-INF/lib/javax.annotation-api-1.3.2.jar'
  '/opt/atlassian/confluence/confluence/WEB-INF/lib/jsr305-3.0.1.jar'

The next message in the log is:

WARN [FelixStartLevel] [extender.internal.support.ExtenderConfiguration] addDefaultDependencyFactories Gemini Blueprint extensions bundle not present, annotation processing disabled.

I'm not sure if this is the cause of another post upgrade problem where I can no longer create a space in Confluence. The dialogue that appears contains the error message:

"An unknown server error has occurred."

I'm trying to work out if they are related.

When the dialogue appears, with the above error, the only entry that appears in the log file is the hibernate warning below

2019-01-08 11:52:22,256 WARN [http-nio-8090-exec-4] [confluence.impl.hibernate.ConfluenceHibernateTransactionManager] doRollback Performing rollback. Transactions:
  ->[PluginReadWriteTx]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT (Session #807314389)
 -- referer: https://xxx.com/index.action | url: /rest/create-dialog/1.0/space-blueprint/dialog/web-items

Has anyone seen this error and if so what needs to be done to fix it?

Shannon S · Answer

Shane,

Glad to hear you tracked down the issue with creating a space and were able to resolve it.

As for the message about duplicates, I know this kind of thing was a bug in the past, for example:

* CONFSERVER-54327 Package Scanner found duplicates for package 'javax.transaction.xa'

From your last reply, you are no longer seeing the message after restart?

Regards,

Shannon

Shane Parkinson · Answer

I've just restarted the server and on this restart, it doesn't display these warning messages,

logDuplicateWarning Package Scanner found duplicates for package

Shane Parkinson · Answer

I fixed the Space Issues by using the fix described in the following forum post, https://community.atlassian.com/t5/Confluence-questions/Unknown-server-error-when-trying-to-create-a-space/qaq-p/903634, which fixed the issue with the space Dialogue Error when trying to create a new space.

The "Create New Space" dialogue problem was introduced after upgrading from 6.11 to 6.13.

The first error, "logduplicateWarning", shown below, is still being logged into the Atlassian-confluence.log file during startup.

I would have thought this error would have been very obvious during testing as the Confluence installation directory is completely replaced during the automated upgrade option w so I'm rather confused as to why this is appearing when you run the installer.

[org.twdata.pkgscanner.ExportPackageListBuilder] logDuplicateWarning Package Scanner found duplicates for package 'javax.annotation' with different versions. Files: javax.annotation-api-1.3.2.jar and jsr305-3.0.1.jar
'/opt/atlassian/confluence/confluence/WEB-INF/lib/javax.annotation-api-1.3.2.jar'
'/opt/atlassian/confluence/confluence/WEB-INF/lib/jsr305-3.0.1.jar'