输入Hadoop版本
[ root @ Hadoop 101~] # hadoopversionhadoop2.6.0- CDH5. 16.2 subversion http://github.com/cloud era/Hadoop-r4f 94d 60 ca a4 cbb9af 0709 a2 FD 96 DC 3861 a F9 cf 20 compiledbyjenkinson 2019-06-03t 10336041 zcompiledwithprotoc2.5.0from som ommandwasrunusing/opt/cloud era/parcels/CDH-5.16.2-1.CDH5. 16.2.2.8/jdh.0