liyafan82 commented on pull request #8210:
URL: https://github.com/apache/arrow/pull/8210#issuecomment-697118857


   @kiszk Thank you for doing this. 
   Please note that when running the benchmarks, some flags should be 
configured properly.
   They can be set through environmental variables:
   
   ARROW_ENABLE_UNSAFE_MEMORY_ACCESS = true
   ARROW_ENABLE_NULL_CHECK_FOR_GET = false
   
   or through system properties:
   
   arrow.enable_unsafe_memory_access = true
   arrow.enable_null_check_for_get = false
   


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