Update pipeline-ec2-hadoop.md
Update pipeline-ec2-hadoop.md
muxuezi/userguide,teragramme/userguide,HunjaeJung/userguide,teragramme/userguide,ebottabi/userguide,camaris/userguide,muxuezi/userguide,dato-code/userguide,ebottabi/userguide,AaronRanAn/userguide,AaronRanAn/userguide,dato-code/userguide,AaronRanAn/userguide,HunjaeJung/userguide,teragramme/userguide,ebottabi/userguide,giserh/userguide,giserh/userguide,camaris/userguide