Comments on the approval process for a web content article causing an import failure

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP FP15, 7.0.X EE, Master
• Fix Version/s: 7.0.0 DXP FP19, 7.0.3 CE GA4, 7.0.0 DXP SP4, 7.0.X EE, 7.1.X, Master
• Component/s: Comments, Staging
• Labels:
  • QA-NF
  • liferay-digital-enterprise-70-sp4
  • liferay-fixpack-de-19-7010
  • staging_testing
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/49325

Description:
The client receives an UnsupportedOperationException error both when they are attempting to publish content and when importing a LAR file consisting of comments.

I've included my log and screenshot from testing.

Steps To Reproduce:

1. Create a new MySQL database and add portal-ext.properties to connect
2. Start up Liferay
3. Create a new empty site
4. Create Web Content folder with Single Approver option
5. Add a new Web Content article to the new folder and submit
6. Review the Web Content using notifications, add comments, and approve
7. Export the site LAR file using Export under Publishing
8. Create a new empty site
9. Import the site LAR file you just exported into the new site

Expected Results:
The LAR file imports with no errors.

Actual Results:
LAR import fails with the following error in the UI:

An unexpected error occurred with the publication process. Please check your portal and publishing configuration.
java.lang.UnsupportedOperationException

And the following error in the logs:

20:54:43,135 ERROR [liferay/background_task-1][BackgroundTaskMessageListener:165] Unable to execute background task
com.liferay.exportimport.kernel.lar.PortletDataException: java.lang.UnsupportedOperationException
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.importMissingReference(BaseStagedModelDataHandler.java:323)
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.doImportMissingReference(BaseStagedModelDataHandler.java:485)
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.importMissingReference(BaseStagedModelDataHandler.java:297)
	at com.liferay.exportimport.kernel.lar.StagedModelDataHandlerUtil.doImportReferenceStagedModel(StagedModelDataHandlerUtil.java:396)
	at com.liferay.exportimport.kernel.lar.StagedModelDataHandlerUtil.importReferenceStagedModel(StagedModelDataHandlerUtil.java:281)
	at com.liferay.exportimport.kernel.lar.StagedModelDataHandlerUtil.importReferenceStagedModel(StagedModelDataHandlerUtil.java:253)
	at com.liferay.exportimport.kernel.lar.StagedModelDataHandlerUtil.importReferenceStagedModels(StagedModelDataHandlerUtil.java:343)
	at com.liferay.message.boards.comment.internal.MBDiscussionStagingHandler.importReferenceDiscussions(MBDiscussionStagingHandler.java:173)
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.importComments(BaseStagedModelDataHandler.java:732)
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.importStagedModel(BaseStagedModelDataHandler.java:366)
	at com.liferay.exportimport.kernel.lar.StagedModelDataHandlerUtil.importStagedModel(StagedModelDataHandlerUtil.java:369)
	at com.liferay.exportimport.kernel.lar.StagedModelDataHandlerUtil.importStagedModel(StagedModelDataHandlerUtil.java:355)
	at com.liferay.journal.exportimport.data.handler.JournalPortletDataHandler.doImportData(JournalPortletDataHandler.java:339)
	at com.liferay.exportimport.kernel.lar.BasePortletDataHandler.importData(BasePortletDataHandler.java:382)
	at com.liferay.exportimport.controller.PortletImportController.importPortletData(PortletImportController.java:290)
	at com.liferay.exportimport.controller.PortletImportController.importPortletData(PortletImportController.java:826)
	at com.liferay.exportimport.controller.LayoutImportController.doImportFile(LayoutImportController.java:822)
	at com.liferay.exportimport.controller.LayoutImportController.importFile(LayoutImportController.java:224)
	at com.liferay.portlet.exportimport.service.impl.ExportImportLocalServiceImpl.importLayouts(ExportImportLocalServiceImpl.java:185)
	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:498)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:163)
	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:54)
	at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:58)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.RetryAdvice.invoke(RetryAdvice.java:46)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.service.ServiceContextAdvice.invoke(ServiceContextAdvice.java:39)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.cache.thread.local.ThreadLocalCacheAdvice.invoke(ThreadLocalCacheAdvice.java:48)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:169)
	at com.sun.proxy.$Proxy92.importLayouts(Unknown Source)
	at com.liferay.exportimport.kernel.service.ExportImportLocalServiceUtil.importLayouts(ExportImportLocalServiceUtil.java:202)
	at com.liferay.exportimport.background.task.LayoutImportBackgroundTaskExecutor$LayoutImportCallable.call(LayoutImportBackgroundTaskExecutor.java:123)
	at com.liferay.exportimport.background.task.LayoutImportBackgroundTaskExecutor$LayoutImportCallable.call(LayoutImportBackgroundTaskExecutor.java:109)
	at com.liferay.portal.spring.transaction.TransactionInvokerImpl$CallableMethodInvocation.proceed(TransactionInvokerImpl.java:101)
	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:54)
	at com.liferay.portal.spring.transaction.TransactionInvokerImpl.invoke(TransactionInvokerImpl.java:47)
	at com.liferay.portal.kernel.transaction.TransactionInvokerUtil.invoke(TransactionInvokerUtil.java:28)
	at com.liferay.exportimport.background.task.LayoutImportBackgroundTaskExecutor.execute(LayoutImportBackgroundTaskExecutor.java:84)
	at com.liferay.portal.kernel.backgroundtask.SerialBackgroundTaskExecutor.execute(SerialBackgroundTaskExecutor.java:54)
	at com.liferay.portal.kernel.backgroundtask.DelegatingBackgroundTaskExecutor.execute(DelegatingBackgroundTaskExecutor.java:43)
	at com.liferay.portal.kernel.backgroundtask.ThreadLocalAwareBackgroundTaskExecutor.execute(ThreadLocalAwareBackgroundTaskExecutor.java:56)
	at com.liferay.portal.background.task.internal.messaging.BackgroundTaskMessageListener.doReceive(BackgroundTaskMessageListener.java:124)
	at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26)
	at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:74)
	at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:52)
	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:756)
	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:667)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.UnsupportedOperationException
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.doImportMissingReference(BaseStagedModelDataHandler.java:493)
	at com.liferay.exportimport.kernel.lar.BaseStagedModelDataHandler.importMissingReference(BaseStagedModelDataHandler.java:316)
	... 68 more

Branch:
Reproducible In Branch

Node: 70x-8cf06b1e24b2c69f78ecd51b033564008fb04a28:80

Master:
Reproducible in Master

Node: master-37cc85673fd99d837563e367f91ca81e7c470e9a:80