We upgrade our Ambari from 2.6 to 2.7.3, after the upgrading, our dashboard metrics keep showing the loading animation without any data. However, Ambari metrics service is ok and metrics page on each components also works. I have checked log file on host of Ambari server, but no exception found. And i also tried to clear Hbase root and tmp dir, not work neither. Any suggestion is appreciate, thanks in advance! ... View more