hadoop2.x源码编译

时间:2023-03-10 01:25:04
hadoop2.x源码编译

转载请标明出处:

http://blog.****.net/zwto1/article/details/50733753

介绍

本篇主要会涉及以下内容:

学会编译hadoop2.x源码

编译hadoop源码

为什么要编译

由于hadoop2.x 只支持Linux 32位,针对Linux 64位没有 native lib 库的支持,必须手动编译。所以下载的二进制包,当启动hadoop的时候,会出现如下警告:

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable

如何编译

在64位Linux下编译

首先打开hadoop2.x源码下的build.txt 查看编译说明:

Requirements:

* Unix System

* JDK 1.6+

* Maven 3.0 or later

* Findbugs 1.3.9 (if running findbugs)

* ProtocolBuffer 2.5.0

* CMake 2.6 or newer (if compiling native code)

* Internet connection for first build (to fetch all Maven and Hadoop dependencies)


 Maven main modules:
  hadoop                              (Main Hadoop project)
         -hadoop-project   (Parent POM for all Hadoop Maven modules.        )
                                     (All plugins & dependencies versions are defined here.)
        -hadoop-project-dist (Parent POM for modules that generate distributions.)
        - hadoop-annotations (Generates the Hadoop doclet used to generated the Javadocs)
         - hadoop-assemblies         (Maven assemblies used by the different modules)
         - hadoop-common-project     (Hadoop Common)
         - hadoop-hdfs-project         (Hadoop HDFS)
         - hadoop-mapreduce-project   (Hadoop MapReduce)
         - hadoop-tools               (Hadoop tools like Streaming, Distcp, etc.)
         - hadoop-dist                (Hadoop distribution assembler)

编译选项

Building distributions:
Create binary distribution without native code and without documentation:
  $ mvn package -Pdist -DskipTests -Dtar
Create binary distribution with native code and with documentation:
  $ mvn package -Pdist,native,docs -DskipTests -Dtar
Create source distribution:
  $ mvn package -Psrc -DskipTests
Create source and binary distributions with native code and documentation:
  $ mvn package -Pdist,native,docs,src -DskipTests -Dtar
Create a local staging version of the website (in /tmp/hadoop-site)
  $ mvn clean site; mvn site:stage -DstagingDirectory=/tmp/hadoop-site

编译前安装依赖包

yum install autoconf automake  libtool cmake
yum install ncurses-devel
yum install openssl-devel
yum install lzo-devel zlib-devel gcc gcc-c++

查软件包是否没有装上:

rpm  -qa | grep autoconf

编译前安装maven:

下载:apache-maven-3.0.5-bin.tar.gz

解压:

tar  -zxvf apache-maven-3.0.5-bin.tar.gz

设置环境变量:

export MAVEN_HOME = /usr/local/maven
export PATH=$PATH:$MAVEN_HOME/bin

执行命令:source /etc/profile或者 . /etc/profile

验证:mvn -v

编译前安装protobuf

下载:protobuf-2.5.0.tar.gz

解压:

tar  -zxvf protobuf-2.5.0.tar.gz

编译安装:

进入安装目录,进行配置,执行命令:

./configure

安装命令:

make & make install

编译前安装findbugs

下载:findbugs-3.0.0.tar.gz

解压:

tar  -zxvf findbugs-3.0.0.tar.gz

设置环境变量:

export FINDBUGS_HOME = /usr/local/findbugs
export PATH=$PATH:$FINDBUGS_HOME/bin

执行命令:source /etc/profile或者 . /etc/profile

验证:findbugs -version

MAVEN国内镜像配置

1、进入安装目录 /opt/modules/apache-maven-3.0.5/conf,编辑 settings.xml 文件

 修改<mirrors>内容:
    <mirror>
        <id>nexus-osc</id>
        <mirrorOf>*</mirrorOf>
        <name>Nexus osc</name>
        <url>http://maven.oschina.net/content/groups/public/</url>
    </mirror> 
修改<profiles>内容:

<profile>
    <id>jdk-1.8</id>
    <activation>
        <jdk>1.8</jdk>
    </activation>
    <repositories>
        <repository>
            <id>nexus</id>
            <name>local private nexus</name>
            <url>http://maven.oschina.net/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>nexus</id>
            <name>local private nexus</name>
            <url>http://maven.oschina.net/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
    </profile>  

2、复制配置

将该配置文件复制到用户目录,使得每次对maven创建时,都采用该配置

* 查看用户目录【/home/hadoop】是否存在【.m2】文件夹,如没有,则创建

$ cd /home/hadoop
$ mkdir .m2
* 复制文件
$ cp /opt/modules/apache-maven-3.0.5/conf/settings.xml ~/.m2/

3.配置DNS

修改: vi /etc/resolv.conf

nameserver 8.8.8.8

nameserver 8.8.4.4

开始编译

Hadoop2.2 .0 有bug ,编译 之前需要先 fix bug

下载 hadoop2.x源码

解压

源码打patch,编辑目录$HADOOP_SRC_HOME/hadoop-common-project/hadoop-auth中的文件pom.xml,在第55行下增加以下内容:

<dependency>
   <groupId>org.mortbay.jetty</groupId>
    <artfactId>jetty-util<artfactId>
    <scope>test</scope>
  </dependency>

这里编译的是hadoop2.7.1版本

mvn package –DskipTests –Pdist,native,docs -Dtar

报错

1.编译出错的话,如下有解决方式:

export MAVEN_OPTS=”-Xms256m -Xmx512m”

2.报错:java heap size

把虚拟机内存调大,然后重启虚拟机,重新编译

3.报错还有可能是maven下载jar的时候,网络出现问题,重新编译

CentOS编译成功界面:

hadoop2.x源码编译

上面是Cetos下的编译,ubuntu编译:

首先要安装的软件:

JDk

Maven

Findbugs

G++

Protobuf

Openssl

CMake

Ant

Ubuntu编译成功界面:

hadoop2.x源码编译