I am trying to upgrade HortonWorks HDP2.3 to 2.5 using Ambari. Installation of all the service upgrades is done. All the Service Checks are successful. But while trying to upgrade, it says "Check failed" as below and no error is thrown in 'ambari-server.log' Can someone point me where should I look for the errors(logs) and help me resolve the below issue? Thanks in advance ... View more