leaves12138 opened a new pull request, #7819:
URL: https://github.com/apache/paimon/pull/7819

   ### Purpose
   
   When dropping a table, Paimon already collects and deletes paths from 
`data-file.external-paths`. However, it missed `global-index.external-path`, so 
global index files could be left behind after `dropTable`.
   
   ### Changes
   
   - Include `GLOBAL_INDEX_EXTERNAL_PATH` when collecting schema external paths 
during table drop.
   - Add catalog coverage verifying both data file external paths and global 
index external paths are removed.
   
   ### Tests
   
   - `mvn -pl paimon-core -Pfast-build 
-Dtest=FileSystemCatalogTest#testDropTableWithExternalPaths,CachingCatalogTest#testDropTableWithExternalPaths
 test`
   - `mvn -pl paimon-core -DskipTests spotless:check`
   


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