Java API for parsing parque

Hi all, Is there a Java API for parsing Parque format to Arrow format? Thank You

Join operation on attributes from arrow structs

Hi all, Assume I have a json file named 'my_data.json' as below. *{"a": [1, 2], "b": {"c": true, "d": "1991-02-03"}} {"a": [3, 4, 5], "b": {"c": false, "d": "2019-04-01"**}}* If I need to do a join operation based on attribute d, can I do it directly from arrow structs? ( or are there any effici