Zeppelin 0.8 on HDP 3.1.0.0 class org.apache.zeppelin.server.LdapRealm not instantiate

[#1]

Error: Unable to instantiate class [org.apache.zeppelin.server.LdapRealm] for object named 'ldapRealm'.  The same is true for 'ldapGroupRealm'

Zeppelin 0.8 on HDP 3.1.0.0

Configuration:

# authentication settings
ldapRealm = org.apache.zeppelin.server.LdapRealm
ldapRealm.contextFactory.environment[ldap.searchBase] = DC=tantor,DC=net
ldapRealm.userDnTemplate = uid={0},OU=users,DC=tantor,DC=net
ldapRealm.contextFactory.url = ldap://infra01.tantor.net:389
ldapRealm.contextFactory.authenticationMechanism = SIMPLE

# general settings
sessionManager = org.apache.shiro.web.session.mgt.DefaultWebSessionManager
securityManager.cacheManager = $cacheManager
securityManager.sessionManager = $sessionManager
securityManager.sessionManager.globalSessionTimeout = 86400000

shiro.loginUrl = /api/login

Exception: 

ERROR [2019-11-06 12:49:24,565] ({main} EnvironmentLoader.java[initEnvironment]:146) - Shiro environment initialization failed
org.apache.shiro.config.ConfigurationException: Unable to instantiate class [org.apache.zeppelin.server.LdapRealm] for object named 'ldapRealm'. Please ensure you've specified the fully qualified class name correctly.
at org.apache.shiro.config.ReflectionBuilder.createNewInstance(ReflectionBuilder.java:309)

NOTE: I have tried both LdapRealm and LdapGroupRealm with the same results

Additional Information:

http://mail-archives.apache.org/mod_mbox/zeppelin-users/201611.mbox/%3CCAPyZXSRUtGx9A_QB9BZN6H8mkk1g...

[#2 · Accepted solution]

@wdailey  Use "ldapRealm=org.apache.zeppelin.realm.LdapRealm"

Below is the template for your reference

ldapRealm=org.apache.zeppelin.realm.LdapRealm 
ldapRealm.contextFactory.systemUsername =cn=manager,dc=charan,dc=com
ldapRealm.contextFactory.systemPassword =admin 
ldapRealm.contextFactory.authenticationMechanism=simple 
ldapRealm.contextFactory.url=ldap://test1:389 
ldapRealm.authorizationEnabled=true 
#ldapRealm.pagingSize = 20000 
ldapRealm.searchBase=
ldapRealm.userSearchBase=
ldapRealm.groupSearchBase=
ldapRealm.userObjectClass=
ldapRealm.userSearchAttributeName = uid 
ldapRealm.userSearchScope = subtree 
ldapRealm.groupSearchScope = subtree 
ldapRealm.userSearchFilter= 
ldapRealm.memberAttribute = member 
ldapRealm.memberAttributeValueTemplate=(name={0})