strongduanmu commented on issue #13441:
URL: 
https://github.com/apache/shardingsphere/issues/13441#issuecomment-977776001


   After some discussion, we decided to rename `shardingsphere-infra-optimize` 
to `shardingsphere-infra-federation` and add two submodules 
`shardingsphere-infra-federation-optimizer` and 
`shardingsphere-infra-federation-executor` , which correspond to query 
optimization and optimization execution.
   
   ```
   shardingsphere-infra-federation
       |----shardingsphere-infra-federation-optimizer
       |----shardingsphere-infra-federation-executor
   ```
   
   The new module dependency is as follow:
   
   
![image](https://user-images.githubusercontent.com/10829171/143227956-8024c7f2-92e7-4cd8-8ebe-99b6c50e74f1.png)
   
   The `shardingsphere-infra-executor` module is positioned as an execution 
engine for the underlying storage, and will support MPP and other executors in 
the future.


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