carloea2 opened a new issue, #8209:
URL: https://github.com/apache/texera/issues/8209

   ### What happened?
   
   ArrowTableTupleProvider tracks row positions using the first column's chunk 
layout and applies those chunk coordinates to every column. Valid Arrow tables 
can have different chunk boundaries per column, causing later fields to throw 
IndexError or read the wrong position.
   
   Before: different column chunk boundaries -> second row throws IndexError
   
   After: different column chunk boundaries -> rows are read by global index
   
   ### How to reproduce?
   
   Create a three-row Arrow table whose first column has chunk lengths 2 and 1 
while its second column has chunk lengths 1 and 2. Read the second row through 
ArrowTableTupleProvider.
   
   ### Version/Branch
   
   1.3.0-incubating-SNAPSHOT (main)
   
   ### Commit Hash
   
   70c21145887920528d7d5540e3fb790b43e8b759
   
   ### What browsers are you seeing the problem on?
   
   Not browser-specific.
   
   ### Relevant log output
   
   ```text
   chunk_layouts= [2, 2]
   row1= 1 10
   row2_a= 2
   IndexError: index out of bounds
   ```


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