tsreaper opened a new pull request, #2359:
URL: https://github.com/apache/incubator-paimon/pull/2359

   ### Purpose
   
   OLAP systems have high demands on reading efficiency. This PR introduces a 
new system table called the "read-optimized table". This table is optimized for 
reading by avoiding merging files.
   
   For primary key tables, this system table only scans files on top level. For 
append only tables, as all files can be read without merging, this system table 
does nothing special.
   
   ### Tests
   
   * `PrimaryKeyFileStoreTableTest#testReadOptimizedTable`.
   * `CatalogTableITCase#testReadOptimizedTable`.
   
   ### API and Format
   
   No.
   
   ### Documentation
   
   Yes. Document is also updated.
   


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