Currently the is_null C++ kernel returns false on NaN values in floating point number data. Consider adding a boolean option to this kernel that could be used to make it return true on NaN values. This would allow the code added in ARROW-12055 to be much simplified.

Reporter: Ian Cook / @ianmcook

Related issues:

• [C++][R] Option for is_null(NaN) to evaluate to true (duplicates)
• [R] is.na() evaluates to FALSE on Arrow NaN values (relates to)
• [C++] Add option to is_nan kernel to return true on null (relates to)
• [C++] Add option to coalesce kernel to treat NaN as null (is related to)

_{Note: This issue was originally created as ARROW-13367. Please see the migration documentation for further details.}