mapleFU commented on PR #43861:
URL: https://github.com/apache/arrow/pull/43861#issuecomment-2315116013

   > I didn’t dial an S3 address in Parquet ut; I only mock an error when 
io.Reader calls ReadAt.
   We need to ensure any error is thrown and handled properly, otherwise users 
might face situations where they read 0 rows of Parquet data, which would be 
disastrous for them.
   
   I see. A lot of module under Parquet-go might need handle `error` 
gracefully. Maybe some fuzzing script to generate bad file or inject bad 
io-state would help finding them, sigh...


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