摘要： Method 1 A：M*KB: k*NInput A : M行 sequenceFIle <Int,Array(k)>B: N 行 sequenceFIle <Int,Array(k)>Map: If read line from AFor j = 1->NCollect(<(linenum,j), vector(k)>)If read line from BFor I = 1->MCollect(<(i,linenum)>,vector(k)>)Reduce: While(iterator.hasNext())Vi = it 阅读全文