Hi,
I'm considering migrating the site from confluence server to a cloud based approach (or maybe data center).
However, I failed to do the export of either the site or any individual spaces.
The direct exception message is :
com.atlassian.confluence.backuprestore.exception.BackupRestoreException: java.util.concurrent.ExecutionException: java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.lang.Integer (java.lang.Long and java.lang.Integer are in module java.base of loader 'bootstrap'
A little bit more background, I've migrated the DB from MySQL to Postgres a couple of weeks ago. There was some casing issue initially, but was resolved.
Here's the log I found from
/var/atlassian/application-data/confluence/logs/atlassian-confluence.log
2024-01-21 14:24:09,096 INFO [ConfluenceBackupRestoreManager:thread-11] [impl.backuprestore.backup.SiteBackupService] doBackupSynchronously SITE backup [119111685] has started.
2024-01-21 14:24:09,100 INFO [ConfluenceBackupRestoreManager:thread-11] [impl.backuprestore.backup.AbstractBackupService] performBackup SITE backup [119111685] is now backing up entities and attachments.
2024-01-21 14:24:09,157 WARN [backuprestore-site-backup:thread-4] [activeobjects.confluence.backup.LoggingBackupProgressMonitor] beginBackup Begin Active objects backup, change log level to INFO for com.atlassian.activeobjects.confluence.backup for more detailed logging.
-- url: /rest/api/backup-restore/backup/site | userName: myuser | referer: https://mydomain/plugins/servlet/backup-and-restore/backup | traceId: 3a5f1d71772e0224
2024-01-21 14:24:15,095 WARN [backuprestore-site-backup:thread-4] [confluence.impl.hibernate.ConfluenceHibernateTransactionManager] doRollback Performing rollback. Transactions:\n ->[null]: PROPAGATION_REQUIRES_NEW,ISOLATION_DEFAULT,readOnly (Session #2109565131)
-- url: /rest/api/backup-restore/backup/site | userName: myuser | referer: https://mydomain/plugins/servlet/backup-and-restore/backup | traceId: 3a5f1d71772e0224
2024-01-21 14:24:15,099 WARN [ConfluenceBackupRestoreManager:thread-11] [confluence.impl.backuprestore.ConfluenceBackupRestoreManager] updateJobStateAfterCompletion Backup restore job BackupRestoreJob{id=119111685, jobOperation=BACKUP, jobScope=SITE, jobState=PROCESSING, createTime=2024-01-21T22:24:09Z, startProcessingTime=2024-01-21T22:24:09Z, finishProcessingTime=null, cancelTime=null, owner='myuser', whoCancelledTheJob='null', errorMessage='null'} failed: java.util.concurrent.ExecutionException: java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.lang.Integer (java.lang.Long and java.lang.Integer are in module java.base of loader 'bootstrap')
-- url: /rest/api/backup-restore/backup/site | userName: myuser | referer: https://mydomain/plugins/servlet/backup-and-restore/backup | traceId: 3a5f1d71772e0224
com.atlassian.confluence.backuprestore.exception.BackupRestoreException: java.util.concurrent.ExecutionException: java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.lang.Integer (java.lang.Long and java.lang.Integer are in module java.base of loader 'bootstrap')
at com.atlassian.confluence.impl.backuprestore.backup.SiteBackupService.doBackupSynchronously(SiteBackupService.java:112)
at com.atlassian.confluence.impl.backuprestore.BackupRestoreJobRunner.runJobSynchronously(BackupRestoreJobRunner.java:54)
at com.atlassian.confluence.impl.backuprestore.ConfluenceBackupRestoreManager.runJobAndUpdateJobProperties(ConfluenceBackupRestoreManager.java:271)
at com.atlassian.confluence.impl.backuprestore.ConfluenceBackupRestoreManager.processJobsFromTheQueue(ConfluenceBackupRestoreManager.java:250)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.util.concurrent.ExecutionException: java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.lang.Integer (java.lang.Long and java.lang.Integer are in module java.base of loader 'bootstrap')
at java.base/java.util.concurrent.FutureTask.report(Unknown Source)
at java.base/java.util.concurrent.FutureTask.get(Unknown Source)
at com.atlassian.confluence.impl.backuprestore.ParallelTasksExecutor.waitUntilAllTasksComplete(ParallelTasksExecutor.java:119)
at com.atlassian.confluence.impl.backuprestore.ParallelTasksExecutor.waitUntilAllStageJobsComplete(ParallelTasksExecutor.java:92)
at com.atlassian.confluence.impl.backuprestore.ParallelTasksExecutor.waitUntilAllStageJobsComplete(ParallelTasksExecutor.java:108)
at com.atlassian.confluence.impl.backuprestore.backup.SiteBackupService.backupAllEntitiesAndAttachments(SiteBackupService.java:155)
at com.atlassian.confluence.impl.backuprestore.backup.AbstractBackupService.performBackup(AbstractBackupService.java:75)
at com.atlassian.confluence.impl.backuprestore.backup.SiteBackupService.doBackupSynchronously(SiteBackupService.java:96)
... 8 more
Caused by: java.lang.ClassCastException: class java.lang.Long cannot be cast to class java.lang.Integer (java.lang.Long and java.lang.Integer are in module java.base of loader 'bootstrap')
at com.atlassian.confluence.impl.backuprestore.backup.exporters.converters.AbstractDatabaseDataConverter.convertToInteger(AbstractDatabaseDataConverter.java:214)
at com.atlassian.confluence.impl.backuprestore.backup.models.AttachmentInfo.<init>(AttachmentInfo.java:31)
at com.atlassian.confluence.impl.backuprestore.backup.exporters.site.ContentEntityPostExportAction.lambda$writeAttachments$1(ContentEntityPostExportAction.java:34)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
at java.base/java.util.LinkedList$LLSpliterator.forEachRemaining(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)
at com.atlassian.confluence.impl.backuprestore.backup.exporters.site.ContentEntityPostExportAction.writeAttachments(ContentEntityPostExportAction.java:35)
at com.atlassian.confluence.impl.backuprestore.backup.exporters.site.ContentEntityPostExportAction.apply(ContentEntityPostExportAction.java:27)
at com.atlassian.confluence.impl.backuprestore.backup.exporters.site.GenericSiteExporter.exportAllRecords(GenericSiteExporter.java:79)
at com.atlassian.confluence.impl.backuprestore.backup.SiteBackupService.lambda$backupAllEntitiesAndAttachments$0(SiteBackupService.java:144)
... 4 more
2024-01-21 14:26:47,791 INFO [Caesium-1-3] [service.stepexecutor.export.SpaceExportCacheService] removeExpiredCacheEntries Removing export cache entries that have exceeded their TTL.
