metesynnada commented on code in PR #6724:
URL: https://github.com/apache/arrow-datafusion/pull/6724#discussion_r1235066157


##########
datafusion/core/src/physical_plan/joins/hash_join.rs:
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@@ -1097,6 +1098,49 @@ pub fn equal_rows(
     err.unwrap_or(Ok(res))
 }
 
+fn eq_dyn_null(

Review Comment:
   A null element can occur in an `Int32Array` as well. Maybe we should insert 
an option to arrow kernel, in arrow-rs.



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