Help Desk Ticket Reference: https://na7.salesforce.com/500A0000004TRXx
project_key: JBEPP

Having configured to read groups from LDAP, EPP 5.0.1.GA fails to start with the following error:

WARN  [core.security.SetCurrentIdentityFilter] An error occured while cache user profile
javax.servlet.ServletException: java.lang.StackOverflowError
	at org.exoplatform.portal.application.PortalController.onService(PortalController.java:131)
	at org.exoplatform.container.web.AbstractHttpServlet.service(AbstractHttpServlet.java:116)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
[...]
Caused by: java.lang.StackOverflowError
	at org.exoplatform.services.organization.idm.GroupDAOImpl.getGroupId(GroupDAOImpl.java:576)
	at org.exoplatform.services.organization.idm.GroupDAOImpl.getGroupId(GroupDAOImpl.java:611)
[...]

This is caused by some groups in the LDAP structure containing a circular cross reference, which leads to a loop in the GroupDAOImpl.getGroupId(..) method.