tuichenchuxin opened a new issue #11658:
URL: https://github.com/apache/shardingsphere/issues/11658


   ## Feature Request
   
   ### Is your feature request related to a problem?
   not a problem, but a little performance waste about
   ### Describe the feature you would like.
   sharding config, when i make `check-table-metadata-enabled: true`
   then it'll go through `TableMetaDataBuilder#parallelLoadTables`
   Then i found tableFutureMap will throw away some future, which is already 
load table.
   If I want to check whether the tables of all data nodes are consistent, then 
I shouldn't just use the table name as the key.
   If I just want to check all the tables on one node, then I shouldn't load 
all the nodes.
   
![image](https://user-images.githubusercontent.com/86938616/128312872-35580944-e1f7-4ca2-a475-eea97a40bf07.png)
   


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