zabetak opened a new pull request, #5808:
URL: https://github.com/apache/hive/pull/5808

   ### Why are the changes needed?
   ROWOFFSET virtual column was introduced for supporting bitmap indexing 
(HIVE-1803) but indexing support has been removed by HIVE-18448. At the moment 
there are no real-use cases exercising this virtual column and there are no 
test cases either.
   
   ### Does this PR introduce _any_ user-facing change?
   Yes. It is no longer for a user to obtain the offset of a row using SQL.
   ```sql
   SELECT t.ROW__OFFSET__INSIDE__BLOCK FROM someTable t 
   ```
   That is rather fine, it this virtual column was never meant to be used like 
this.
   
   ### How was this patch tested?
   Existing tests


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