generally use sqoop-1.4.7.bin__hadoop-2.6.0.tar.gz as a compressed package

so I would like to ask the master:

1. where is sqoop-1.4.7.tar.gz commonly used? What scene?
2. what"s the difference between sqoop-1.4.7.bin__hadoop-2.6.0.tar.gz and sqoop-1.4.7.tar.gz?