Hi, Is there a way to keep a map-task alive after it has finished its work, to later perform another task on its same input? For example, consider the k-means clustering algorithm (k-means description<http://en.wikipedia.org/wiki/K-means_clustering>and hadoop implementation<http://codingwiththomas.blogspot.co.il/2011/05/k-means-clustering-with-mapreduce.html>). The only thing changing between iterations is the clusters centers. All the input points remain the same. Keeping the mapper alive, and performing the next round of map-tasks on the same node will save a lot of communication cost.
Thanks, Yaron
