@jarhyeon cho please check this - this might be userful to get more clarity - https://integratc.wordpress.com/2015/03/25/hadoop-whose-to-choose-part-2/ ... View more

Select the Metrics drop-down, as shown in the following example: Choose Add. Select a metric, such as Region in Transition. Choose Apply. ... View more

Just to add to that.. if you want to make change, it would be easier for you to follow the code by looking at the source here - https://github.com/apache/ambari/ The ui code is here - https://github.com/apache/ambari/tree/trunk/ambari-web/app You can just fork the project and build it after making changes. ... View more