userdata[1-5].parquet: These are sample files containing data in PARQUET format.

-> Number of rows in each file: 1000
-> Column details:
column#		column_name		hive_datatype
=====================================================
1		registration_dttm 	timestamp
2		id 			int
3		first_name 		string
4		last_name 		string
5		email 			string
6		gender 			string
7		ip_address 		string
8		cc 			string
9		country 		string
10		birthdate 		string
11		salary 			double
12		title 			string
13		comments 		string
