CentOS6.7-64bit編譯hadoop2.6.4

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1.下載maven（apache-maven-3.3.3-bin.tar.gz）
http://archive.apache.org/dist/maven/maven-3/3.3.3/binaries/apache-maven-3.3.3-bin.tar.gz
2.安裝maven
tar -zxvf apache-maven-3.3.3-bin.tar.gz -C /usr/local
3.添加環境變量
vim /etc/profileexport JAVA_HOME=/usr/local/jdk1.7.0_45
export MAVEN_HOME=/usr/local/apache-maven-3.3.3
export PATH=$PATH:$JAVA_HOME/bin:$MAVEN_HOME/bin4.加載環境變量
source /etc/proflie
mvn -version5.下載protobuf（https://code.google.com/p/protobuf/downloads/list 或 https://protobuf.googlecode.com/files/protobuf-2.5.0.tar.gz）6.安裝protobuf編譯依賴，為了編譯安裝protoc，需要使用YUM下載幾個依賴的工具
yum install -y gcc gcc-c++ make7.解壓安裝protobuf
tar -zxvf  protobuf-2.5.0.tar.gz -C /usr/local/src
cd /usr/local/src/protobuf-2.5.0  
./configure --prefix=/usr/local/protobuf 
make && make install8將protobuf添加到環境變量
vim /etc/profileexport PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$MAVEN_HOME/bin:/usr/local/protobuf/binsource /etc/profileprotoc --version9.安裝其他編譯依賴
yum install -y cmake openssl-devel ncurses-devel zlib-devel
yum install -y snappy snappy-devel bzip2 bzip2-devel lzo lzo-devel lzop openssl openssl-devel10.編譯hadoop（進入文件夾里面，里面有一個文件BUILDINT.txt，打開即可看見里面關于編譯hadoop的一些環境要求）
tar -zxvf hadoop-2.6.4-src.tar.gz -C /usr/local/src/
cd /usr/local/src/hadoop-2.6.4-srcmvn package -Pdist,native -DskipTests -Dtar  12.查看編譯好的安裝包
cd /usr/local/src/hadoop-2.6.4-src/hadoop-dist/target#出現問題
INFO util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable在/etc/profile中添加
export HADOOP_OPTS="-Djava.library.path=$HADOOP_HOME/lib/native"#查看可用的本地庫
hadoop checknative -acat /proc/cpuinfo | grep "physical id" | sort | uniq | wc –l
cat /proc/cpuinfo | grep "core id" | sort -u | wc -l
cat /proc/cpuinfo | grep MHz | uniq

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