spark-1.6.0-bin-hadoop1.tgz: 953E016C 634E5579 DE642AD2 1E8982BC B59E72FE
                             4DC91A91 E984E9D9 7BDEEA45 803D6440 D259686C
                             52D174E4 9BE7A081 7EF338C1 5035D93E 7B9AFD81
                             9F2E013B