Hi, I want to share some data structures for the map tasks on a same node(not through files), I mean, if one map task has already initialized some data structures (e.g. an array or a list), can other map tasks share these memorys and directly access them, for I don't want to reinitialize these datas and I want to save some memory. Can hadoop help me do this? thanks
2009-06-16 snowloong
