A.沒(méi)區(qū)別 B.多會(huì)話 C.支持網(wǎng)絡(luò)環(huán)境 D.數(shù)據(jù)庫(kù)的區(qū)別
A.map B.flatMap C.reduceByKey D.sample
A.Partition B.Job C.Stage D.TaskScheduler