linliu-code opened a new pull request, #9888:
URL: https://github.com/apache/hudi/pull/9888

   ### Change Logs
   
   To support incremental quereis, we do the following things:
   
   1. Extends the HoodieFileIndex as HoodieIncremtnalFileIndex, in which we 
override the listFiles and inputFiles methods to return only the affected files 
during the specified time range.
   2. Build a factory class to build different HadoopFsRelation for different 
query types.
   
   ### Impact
   
   No public apis are affected.
   
   ### Risk level (write none, low medium or high below)
   
   Low.
   
   ### Contributor's checklist
   
   - [ ] Read through [contributor's 
guide](https://hudi.apache.org/contribute/how-to-contribute)
   - [ ] Change Logs and Impact were stated clearly
   - [ ] Adequate tests were added if applicable
   - [ ] CI passed
   


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