when the cluster has many tables, UI can't be opened quickly

my cluster has 60+K tables, and UI is opened slowly.
From the following code, we can reduce steps of class conversion

rsgroup.jsp
https://github.com/apache/hbase/blob/600be60a4bd4d3b3e9652027a0cb8bdd32016c6b/hbase-server/src/main/resources/hbase-webapps/master/rsgroup.jsp#L439
snapshot.jsp
https://github.com/apache/hbase/blob/600be60a4bd4d3b3e9652027a0cb8bdd32016c6b/hbase-server/src/main/resources/hbase-webapps/master/snapshot.jsp#L42
RegionStates.java
https://github.com/apache/hbase/blob/600be60a4bd4d3b3e9652027a0cb8bdd32016c6b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStates.java#L538
RSStatusTmpl.jamon
https://github.com/apache/hbase/blob/600be60a4bd4d3b3e9652027a0cb8bdd32016c6b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/RSStatusTmpl.jamon#L47