Matei Zaharia Andy Konwinski Anthony D. Joseph Randy H. Katz Ion Stoica Improving MapReduce Performance in Heterogeneous Environments. 29-42 2008 OSDI http://www.usenix.org/events/osdi08/tech/full_papers/zaharia/zaharia.pdf conf/osdi/2008 db/conf/osdi/osdi2008.html#ZahariaKJKS08