Confluence import from OnDemand fails with NPE on action: longrunningtaskxml
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Problem
When trying to import a backup from Confluence OD, the import fails with the message "Import failed. Check your server logs for more information. java.lang.NullPointerException" on the UI and the following appears in the atlassian-confluence.log
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2015-06-25 09:47:05,516 ERROR [Long running task: Importing data] [confluence.importexport.xmlimport.BackupImporter] importEntities Cannot import the entities:
-- referer: http://localhost:8090/admin/restore-local-file.action | url: /longrunningtaskxml.action | userName: admin | action: longrunningtaskxml
java.lang.NullPointerException
at com.atlassian.confluence.importexport.xmlimport.BackupImporter.doSpecialProcessing(BackupImporter.java:557)
at com.atlassian.confluence.importexport.xmlimport.BackupImporter.postProcess(BackupImporter.java:457)
at com.atlassian.confluence.importexport.xmlimport.BackupImporter.importEntities(BackupImporter.java:423)
at com.atlassian.confluence.importexport.xmlimport.BackupImporter.importEverything(BackupImporter.java:388)
at com.atlassian.confluence.importexport.xmlimport.FileBackupImporter.importEverything(FileBackupImporter.java:152)
at com.atlassian.confluence.importexport.xmlimport.BackupImporter$1.doInTransactionWithoutResult(BackupImporter.java:259)
at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:33)
at com.atlassian.confluence.importexport.xmlimport.RestorePluginStateStoreTransactionCallbackDecorator.doInTransaction(RestorePluginStateStoreTransactionCallbackDecorator.java:50)
at com.atlassian.confluence.importexport.xmlimport.RestoreBandanaValuesTransactionCallbackDecorator.doInTransaction(RestoreBandanaValuesTransactionCallbackDecorator.java:50)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
at com.atlassian.confluence.importexport.xmlimport.BackupImporter.doImportInternal(BackupImporter.java:211)
at com.atlassian.confluence.importexport.Importer.doImport(Importer.java:77)
at com.atlassian.confluence.importexport.DefaultImportExportManager.performImportInternal(DefaultImportExportManager.java:83)
at com.atlassian.confluence.importexport.DefaultImportExportManager.performImport(DefaultImportExportManager.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy196.performImport(Unknown Source)
at com.atlassian.confluence.importexport.actions.ImportLongRunningTask.runInternal(ImportLongRunningTask.java:95)
at com.atlassian.confluence.util.longrunning.ConfluenceAbstractLongRunningTask.run(ConfluenceAbstractLongRunningTask.java:27)
at com.atlassian.confluence.util.longrunning.ManagedTask.run(ManagedTask.java:58)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)Cause
The attachments folder is missing during the import.
Resolution
Since this happens when the attachments folder is missing before the import process starts, what you'll need to do is to get your attachments folder from OD (if you had them imported separately from the data) and then move the attachments into Confluence Server's attachments folder. Once this is done, proceed with the import as usual.
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