hadoop2.4.0源码编译

1.前言 Hadoop-2.4.0 的源码目录下有个 BUILDING.txt 文件，它介绍了如何在 Linux 和 Windows 下编译源代码，本文基本是遵照 BUILDING.txt 指示来操作的，这里再做一下简单的提炼。 第一次编译要求能够访问互联网， Hadoop 的编译依赖非常多的东西，一定要保

1. 前言

Hadoop-2.4.0的源码目录下有个BUILDING.txt文件，它介绍了如何在Linux和Windows下编译源代码，本文基本是遵照BUILDING.txt指示来操作的，这里再做一下简单的提炼。

第一次编译要求能够访问互联网，Hadoop的编译依赖非常多的东西，一定要保证机器可访问互联网，否则难逐一解决所有的编译问题，但第一次之后的编译则不用再下载了。

2. 安装依赖

在编译Hadoop 2.4.0源码之前，需要将下列几个依赖的东西安装好：

1) JDK 1.6或更新版本（本文使用JDK1.7，请不要安装JDK1.8版本，JDK1.8和Hadoop 2.4.0不匹配，编译Hadoop 2.4.0源码时会报很多错误）

2) Maven 3.0或更新版本

3) ProtocolBuffer 2.5.0

4) CMake 2.6或更新版本

5) Findbugs 1.3.9，可选的（本文编译时未安装）

在安装好之后，还需要设置一下环境变量，可以修改/etc/profile，也可以是修改~/.profile，增加如下内容：

export JAVA_HOME=/root/jdk

export CLASSPATH=$JAVA_HOME/lib/tools.jar

export PATH=$JAVA_HOME/bin:$PATH

export CMAKE_HOME=/root/cmake

export PATH=$CMAKE_HOME/bin:$PATH

export PROTOC_HOME=/root/protobuf

export PATH=$PROTOC_HOME/bin:$PATH

export MAVEN_HOME=/root/maven

export PATH=$MAVEN_HOME/bin:$PATH

本文以root用户在/root目录下进行安装，但实际可以选择非root用户及非/root目录进行安装。

2.1. 安装ProtocolBuffer

标准的automake编译安装方式：

1) cd /root

2) tar xzf protobuf-2.5.0.tar.gz

3) cd protobuf-2.5.0

4) ./conigure --prefix=/root/protobuf

5) make

6) make install

2.2. 安装CMake

1) cd /root

2) tar xzf cmake-2.8.12.2.tar.gz

3) cd cmake-2.8.12.2

4) ./bootstrap --prefix=/root/cmake

5) make

6) make install

2.3. 安装JDK

1) cd /root

2) tar xzf jdk-7u55-linux-x64.gz

3) cd jdk1.7.0_55

4) ln -s jdk1.7.0_55 jdk

2.4. 安装Maven

1) cd /root

2) tar xzf apache-maven-3.0.5-bin.tar.gz

3) ln -s apache-maven-3.0.5 maven

3. 编译Hadoop源代码

完成上述准备工作后，即可通过执行命令：mvn package -Pdist -DskipTests -Dtar，启动对Hadoop源代码的编译。请注意一定不要使用JDK1.8。

如果需要编译成本地库（Native Libraries）文件，则使用命令：mvn package -Pdist,native -DskipTests -Dtar。如果C/C++程序需要访问HDFS等，需要使用navite方式编译生成相应的库文件。也可以使用mvn package -Pnative -DskipTests -Dtar特意编译出本地库文件。

相关的编译命令还有：

1) mvn package -Pdist -DskipTests -Dtar

2) mvn package -Pdist,native,docs,src -DskipTests -Dtar

3) mvn package -Psrc -DskipTests

4) mvn package -Pdist,native,docs -DskipTests -Dtar

5) mvn clean site; mvn site:stage -DstagingDirectory=/tmp/hadoop-site

编译成功后，jar文件会放在target子目录下，可以在Hadoop源码目录下借用find命令搜索各个target子目录。

编译成功后，会生成Hadoop二进制安装包hadoop-2.4.0.tar.gz，放在源代码的hadoop-dist/target子目录下：

main:

[exec] $ tar cf hadoop-2.4.0.tar hadoop-2.4.0

[exec] $ gzip -f hadoop-2.4.0.tar

[exec]

[exec] Hadoop dist tar available at: /root/hadoop-2.4.0-src/hadoop-dist/target/hadoop-2.4.0.tar.gz

[exec]

[INFO] Executed tasks

[INFO]

[INFO] --- maven-javadoc-plugin:2.8.1:jar (module-javadocs) @ hadoop-dist ---

[INFO] Building jar: /root/hadoop-2.4.0-src/hadoop-dist/target/hadoop-dist-2.4.0-javadoc.jar

[INFO] ------------------------------------------------------------------------

[INFO] Reactor Summary:

[INFO]

[INFO] Apache Hadoop Main ................................ SUCCESS [4.647s]

[INFO] Apache Hadoop Project POM ......................... SUCCESS [5.352s]

[INFO] Apache Hadoop Annotations ......................... SUCCESS [7.239s]

[INFO] Apache Hadoop Assemblies .......................... SUCCESS [0.424s]

[INFO] Apache Hadoop Project Dist POM .................... SUCCESS [2.918s]

[INFO] Apache Hadoop Maven Plugins ....................... SUCCESS [6.261s]

[INFO] Apache Hadoop MiniKDC ............................. SUCCESS [5.321s]

[INFO] Apache Hadoop Auth ................................ SUCCESS [5.953s]

[INFO] Apache Hadoop Auth Examples ....................... SUCCESS [3.783s]

[INFO] Apache Hadoop Common .............................. SUCCESS [1:54.010s]

[INFO] Apache Hadoop NFS ................................. SUCCESS [9.721s]

[INFO] Apache Hadoop Common Project ...................... SUCCESS [0.048s]

[INFO] Apache Hadoop HDFS ................................ SUCCESS [4:15.270s]

[INFO] Apache Hadoop HttpFS .............................. SUCCESS [6:18.553s]

[INFO] Apache Hadoop HDFS BookKeeper Journal ............. SUCCESS [16.237s]

[INFO] Apache Hadoop HDFS-NFS ............................ SUCCESS [6.543s]

[INFO] Apache Hadoop HDFS Project ........................ SUCCESS [0.036s]

[INFO] hadoop-yarn ....................................... SUCCESS [0.051s]

[INFO] hadoop-yarn-api ................................... SUCCESS [1:35.227s]

[INFO] hadoop-yarn-common ................................ SUCCESS [43.216s]

[INFO] hadoop-yarn-server ................................ SUCCESS [0.055s]

[INFO] hadoop-yarn-server-common ......................... SUCCESS [16.476s]

[INFO] hadoop-yarn-server-nodemanager .................... SUCCESS [19.942s]

[INFO] hadoop-yarn-server-web-proxy ...................... SUCCESS [4.926s]

[INFO] hadoop-yarn-server-applicationhistoryservice ...... SUCCESS [9.804s]

[INFO] hadoop-yarn-server-resourcemanager ................ SUCCESS [23.320s]

[INFO] hadoop-yarn-server-tests .......................... SUCCESS [1.208s]

[INFO] hadoop-yarn-client ................................ SUCCESS [9.177s]

[INFO] hadoop-yarn-applications .......................... SUCCESS [0.113s]

[INFO] hadoop-yarn-applications-distributedshell ......... SUCCESS [4.106s]

[INFO] hadoop-yarn-applications-unmanaged-am-launcher .... SUCCESS [3.265s]

[INFO] hadoop-yarn-site .................................. SUCCESS [0.056s]

[INFO] hadoop-yarn-project ............................... SUCCESS [5.552s]

[INFO] hadoop-mapreduce-client ........................... SUCCESS [0.096s]

[INFO] hadoop-mapreduce-client-core ...................... SUCCESS [37.231s]

[INFO] hadoop-mapreduce-client-common .................... SUCCESS [27.135s]

[INFO] hadoop-mapreduce-client-shuffle ................... SUCCESS [4.886s]

[INFO] hadoop-mapreduce-client-app ....................... SUCCESS [17.876s]

[INFO] hadoop-mapreduce-client-hs ........................ SUCCESS [14.140s]

[INFO] hadoop-mapreduce-client-jobclient ................. SUCCESS [11.305s]

[INFO] hadoop-mapreduce-client-hs-plugins ................ SUCCESS [3.083s]

[INFO] Apache Hadoop MapReduce Examples .................. SUCCESS [9.855s]

[INFO] hadoop-mapreduce .................................. SUCCESS [5.110s]

[INFO] Apache Hadoop MapReduce Streaming ................. SUCCESS [7.778s]

[INFO] Apache Hadoop Distributed Copy .................... SUCCESS [12.973s]

[INFO] Apache Hadoop Archives ............................ SUCCESS [3.265s]

[INFO] Apache Hadoop Rumen ............................... SUCCESS [11.060s]

[INFO] Apache Hadoop Gridmix ............................. SUCCESS [7.412s]

[INFO] Apache Hadoop Data Join ........................... SUCCESS [4.221s]

[INFO] Apache Hadoop Extras .............................. SUCCESS [4.771s]

[INFO] Apache Hadoop Pipes ............................... SUCCESS [0.032s]

[INFO] Apache Hadoop OpenStack support ................... SUCCESS [8.030s]

[INFO] Apache Hadoop Client .............................. SUCCESS [7.730s]

[INFO] Apache Hadoop Mini-Cluster ........................ SUCCESS [0.158s]

[INFO] Apache Hadoop Scheduler Load Simulator ............ SUCCESS [7.485s]

[INFO] Apache Hadoop Tools Dist .......................... SUCCESS [6.912s]

[INFO] Apache Hadoop Tools ............................... SUCCESS [0.029s]

[INFO] Apache Hadoop Distribution ........................ SUCCESS [40.425s]

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 21:57.892s

[INFO] Finished at: Mon Apr 21 14:33:22 CST 2014

[INFO] Final Memory: 88M/243M

[INFO] ------------------------------------------------------------------------