Hadoop集成lzo（含maven安装）

Hadoop本身并不支持lzo压缩，其配置步骤如下

1 maven安装
	#下载
	https://maven.apache.org/download.cgi #最新版本为apache-maven-3.8.5-bin.tar.gz
	#解压
	tar -zxvf /opt/software/apache-maven-3.8.5-bin.tar.gz -C /opt/module
	#添加环境
	vi /etc/profile
		#MAVEN_HOME
		MAVEN_HOME=/opt/module/maven
		export PATH=$PATH:$MAVEN_HOME/bin
	source /etc/profile
	#查看
	mvn –v
2 其他安装
	yum -y install gcc-c++ lzo-devel zlib-devel autoconf automake libtool
3 下载 安装 编译 lzo
	wget http://www.oberhumer.com/opensource/lzo/download/lzo-2.10.tar.gz
	tar -zxvf lzo-2.10.tar.gz
	cd lzo-2.10
	./configure -prefix=/usr/local/hadoop/lzo/
	make
	make install
4 编译hadoop-lzo源码
	#下载hadoop-lzo的源码
		https://github.com/twitter/hadoop-lzo/archive/master.zip
 	#解压之后，上传文件夹hadoop-lzo-master至/opt/module，修改其中pom.xml
    	<hadoop.current.version>2.7.7</hadoop.current.version>
	#/etc/profile中声明两个临时环境变量
     	export C_INCLUDE_PATH=/usr/local/hadoop/lzo/include
     	export LIBRARY_PATH=/usr/local/hadoop/lzo/lib 
 	#执行maven编译命令
    	mvn package -Dmaven.test.skip=true
 	#target目录下，hadoop-lzo-0.4.21-SNAPSHOT.jar 即编译成功的hadoop-lzo组件
 5 配置hadoop-lzo
 	cp /opt/module/hadoop-lzo-master/target/hadoop-lzo-0.4.21-SNAPSHOT.jar /opt/module/hadoop-2.7.7/share/hadoop/common
 	#分发
 	xsync /opt/module/hadoop-2.7.7/share/hadoop/common/hadoop-lzo-0.4.21-SNAPSHOT.jar
 	#core-site.xml增加配置信息
 		<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>
	#分发
	xsync core-site.xml
	#启动集群