#测试写能力
hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-3.3.1-tests.jar TestDFSIO -write -nrFiles 1 -fileSize 128MB
#写速度
hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-3.3.1-tests.jar TestDFSIO -read -nrFiles 1 -fileSize 128MB
