1）hadoop-lzo编译
hadoop本身并不支持lzo压缩，故需要使用twitter提供的hadoop-lzo开源组件。hadoop-lzo需依赖hadoop和lzo进行编译。

2）将编译好后的hadoop-lzo-0.4.20.jar 放入hadoop-3.1.3/share/hadoop/common/

[atguigu@hadoop102 common]$ mv hadoop-lzo-0.4.20.jar /opt/module/hadoop-3.1.3/share/hadoop/common
[atguigu@hadoop102 common]$ pwd
/opt/module/hadoop-3.1.3/share/hadoop/common
[atguigu@hadoop102 common]$ ls
hadoop-lzo-0.4.20.jar

3）同步hadoop-lzo-0.4.20.jar到hadoop103、hadoop104
[atguigu@hadoop102 common]$ xsync hadoop-lzo-0.4.20.jar
4）core-site.xml增加配置支持LZO压缩

<configuration>
    <property>
        <name>io.compression.codecs</name>
        <value>
            org.apache.hadoop.io.compress.GzipCodec,
            org.apache.hadoop.io.compress.DefaultCodec,
            org.apache.hadoop.io.compress.BZip2Codec,
            org.apache.hadoop.io.compress.SnappyCodec,
            com.hadoop.compression.lzo.LzoCodec,
            com.hadoop.compression.lzo.LzopCodec
        </value>
    </property>

    <property>
        <name>io.compression.codec.lzo.class</name>
        <value>com.hadoop.compression.lzo.LzoCodec</value>
    </property>
</configuration>

5）同步core-site.xml到hadoop103、hadoop104

[atguigu@hadoop102 hadoop]$ xsync core-site.xml

6）启动及查看集群

[atguigu@hadoop102 hadoop-3.1.3]$xcall.sh jps
[atguigu@hadoop102 hadoop-3.1.3]$ sbin/start-dfs.sh
[atguigu@hadoop103 hadoop-3.1.3]$ sbin/start-yarn.sh

7）测试-数据准备

[atguigu@hadoop102 hadoop-3.1.3]$ hadoop fs -mkdir /input
[atguigu@hadoop102 hadoop-3.1.3]$ hadoop fs -put README.txt 
/input

8）测试-压缩

[atguigu@hadoop102 hadoop-3.1.3]$ hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.3.jar wordcount -Dmapreduce.output.fileoutputformat.compress=true -Dmapreduce.output.fileoutputformat.compress.codec=com.hadoop.compression.lzo.LzopCodec  /input /output