spark-security Ranger plugin is not masking when a function is used around the column

[harsha-tenneti]

When a column has masking policies configured and the column is called inside a function. The output of the function is not returning masked data.

For example, let's say if a column abc from table default_table has HASH_MASK policy configured for a user XYZ. Below are a couple of queries where the user might get actual abc value instead of masked value.

select substr(abc, 0, 100000000000)  from default_table
select concat(abc, '-', 'dummy') from default_table

[pingsutw]

cc @xunliu