Hadoop vs. MapReduce
Posted Jan 26, 2012 0:52 UTC (Thu) by roelofs
Parent article: Hadoop rings in the new year with a 1.0 release
Hadoop's core framework is an implementation of the MapReduce programming paradigm.
Minor clarification: Hadoop 1.0 can accurately be considered "just" an implementation of the map-reduce paradigm, but 2.0 splits the core framework from the MR application. MAPREDUCE-279 was the tracker for that work, which (AFAIK) is now undergoing stabilization on the 0.23 branch (possibly since renamed).
Post-split, it will be possible to implement MPI and other application layers on top of the core scheduling and resource-management layer.
to post comments)