Answer by leftjoin for Escaping child operator in the HIVE function get_json_object

Currently get_json_object() does not support escaping, see HIVE-2927

The workaround is to use lateral view json_tuple():

select v.rootkey, v.key_a, v.key_b  from (select '{"rootkey":15,"key.a":16,"key.b":17}' as col) test       lateral view json_tuple(col, 'rootkey', 'key.a','key.b') v as rootkey, key_a, key_b;

Result:

v.rootkey   v.key_a   v.key_b   15          16        17