Issue was resolved. No need to configure cross-realm trust rather, try logging in to Ambari URL via browser or API using curl. This will generate a OAuth token for the user which will then be used for authentication to access ADLS. So Kerberos token for hadoop authentication and Oauth token needed for ADLS authentication. Thus each time , when you create HDInsight cluster, ensure you create token for the user to access ADLS from Ambari API.
... View more
