CDH自带了snappy压缩包，无需手动安装

确认snappy

打开CDHweb，点击yarn2-配置，搜索io.compression.codecs
按图改

hbase已有表可以通过
alter 'test', {NAME => 'cf', COMPRESSION => 'SNAPPY'}

未有表可以通过
create 'dcs:t_dev_history',{NAME => 'f', COMPRESSION => 'SNAPPY'}