CMIS Alfresco cannot show folder content

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.0 M2, 7.1.X, Master
• Component/s: External Document Repositories > CMIS
• Labels:
  • QA-V
  • profiq
• Story Points: 1
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/55452
• Bug Type: Regression Bug
• QA Test Name:
  • dont-test-again

Steps to reproduce:

1. Add Alfresco repository to Liferay DM (using AtomPub or Web Services)
2. Open repository
3. Open "Shared" folder
4. Folder doesn't have any content, add basic document

Actual Result:
Web page doesn't have content

Error log

2018-02-08 12:28:13.548 ERROR [http-nio-8080-exec-1][IncludeTag:128] Current URL /group/guest/~/control_panel/manage?p_p_id=com_liferay_document_library_web_portlet_DLAdminPortlet&p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view&_com_liferay_document_library_web_portlet_DLAdminPortlet_mvcRenderCommandName=%2Fdocument_library%2Fview_folder&_com_liferay_document_library_web_portlet_DLAdminPortlet_redirect=http%3A%2F%2F192.168.88.140%3A8080%2Fgroup%2Fguest%2F~%2Fcontrol_panel%2Fmanage%3Fp_p_id%3Dcom_liferay_document_library_web_portlet_DLAdminPortlet%26p_p_lifecycle%3D0%26p_p_state%3Dmaximized%26p_p_mode%3Dview%26_com_liferay_document_library_web_portlet_DLAdminPortlet_mvcRenderCommandName%3D%252Fdocument_library%252Fview_folder%26_com_liferay_document_library_web_portlet_DLAdminPortlet_folderId%3D37963&_com_liferay_document_library_web_portlet_DLAdminPortlet_folderId=37964 generates exception: com.liferay.portal.kernel.repository.RepositoryException: java.lang.NullPointerException
java.lang.NullPointerException
	at com.liferay.document.library.repository.cmis.internal.CMISRepository.cacheFoldersAndFileEntries(CMISRepository.java:1579)
	at com.liferay.document.library.repository.cmis.internal.CMISRepository.getFoldersAndFileEntries(CMISRepository.java:2045)
	at com.liferay.document.library.repository.cmis.internal.CMISRepository.getFoldersAndFileEntriesCount(CMISRepository.java:792)
	at com.liferay.document.library.repository.cmis.CMISRepositoryHandler.getFoldersAndFileEntriesCount(CMISRepositoryHandler.java:307)
	at com.liferay.portal.kernel.repository.BaseRepositoryImpl.getFoldersAndFileEntriesAndFileShortcutsCount(BaseRepositoryImpl.java:325)
	at com.liferay.document.library.repository.cmis.internal.RepositoryProxyBean.getFoldersAndFileEntriesAndFileShortcutsCount(RepositoryProxyBean.java:761)
	at com.liferay.portal.kernel.repository.Repository.getFoldersAndFileEntriesAndFileShortcutsCount(Repository.java:180)
	at com.liferay.portal.repository.capabilities.CapabilityRepository.getFoldersAndFileEntriesAndFileShortcutsCount(CapabilityRepository.java:660)
	at com.liferay.portlet.documentlibrary.service.impl.DLAppServiceImpl.getFoldersAndFileEntriesAndFileShortcutsCount(DLAppServiceImpl.java:1588)
	at com.liferay.portlet.documentlibrary.service.impl.DLAppServiceImpl.getFoldersAndFileEntriesAndFileShortcutsCount(DLAppServiceImpl.java:1575)
	at com.liferay.portlet.documentlibrary.service.impl.DLAppServiceImpl.getFoldersAndFileEntriesAndFileShortcutsCount(DLAppServiceImpl.java:1565)
	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.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)

Document is added successfully, in Alfresco is visible

Expected result: Folder with added document is visible

Priority L4 + S4 = 5 

Reproducible:
liferay-ce-portal-tomcat-7.0-nightly-012c6ad4ce60c6a3074882a4337420aecb16af24, mysql 5.6, Alfresco CE 5.2.0, CentOS, Chromium 64