A.分為映射,映射為Map 階段B.分為減速,減速為Reduce 階段C.分為映射,映射為Reduce 階段D.分為減速,減速為Map 階段
A.mapreduce.framework.nameB.mapreduce.jobhistory.addressC.yarn.resourcemanager.addressD.mapreduce.jobhistory.webapp.address
A.core-site.xmlB.hdfs-site.xmlC.mapred-site.xmlD.slaves.xml