问题导读:
1.如果获取hadoop src maven包?
2.编译hadoop需要装哪些软件?
3.如何编译hadoop2.4?
扩展:
编译hadoop为何安装这些软件?
一、首先下载hadoop源码包
下载的方式还是比较多的
1.svn的方式
svn下载首先需要安装SVN,如果想尝试使用svn,可以参考源码管理、获取网络源码工具:TortoiseSVN使用手册,hadoop的svn下载地址点此
2.压缩包的方式
这里我们介绍一种压缩包的方式。
首先我们登录官网:
http://hadoop.apache.org/,我们找到下面链接,点进去下载即可。如果刚接触,不知道怎么下载,可以查看帖子新手指导:hadoop官网介绍及如何下载hadoop(2.4)各个版本与查看hadoop API介绍,里面介绍的很详细。
二、解压
- aboutyun@master:~$ tar zxvf hadoop-2.4.0-src.tar.gz
解压完毕,我们会看到相应的文件夹:
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三、解压完毕,我们开始准备编译所需要的软件
这里软件的准备,很多文章写的都不全,这里整理一下。哪些软件是需要安装的。
这里需要说明的是有的Linux有自带的这些工具,这个需要仔细看一下版本是否匹配,不匹配则升级一下,有些不能升级,那么就重装一下吧
1、jdk的安装
步骤下载压缩包、解压、配置环境变量
(1)jdk下载
链接: http://pan.baidu.com/s/1jGr41SU 密码: rawv
(2)jdk解压
- tar zxvf jdk-7u51-linux-x64.tar.gz
然后重命令为:
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(3)配置环境变量:
如下图所示红字部分为:(记得这里的路径改成自己的实际安装路径)
- /usr/jdk1.7/bin
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(4)检验是否安装成功
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2、maven的安装
- sudo apt-get install maven
我这里已经安装
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上面可能还需要配置环境变量之类的,但是我这里没有好像是系统自带的,网上的资料也比较多,注意maven的版本,我这里是3.0.4,hadoop2.4需要maven的这个版本或则更高的版本3.2.1版本也是可以的。
验证安装是否成功
- mvn -version
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3.protobuf的安装
为防止出错,这里补充一些内容,
3.1先安装g++
- sudo apt-get install g++
(1)下载
- sudo wget https://protobuf.googlecode.com/files/protobuf-2.5.0.tar.gz
由于google不能访问,可以从网盘下载链接:http://pan.baidu.com/s/1dDgWe6P 密码:xgiu
(2)解压
- tar zxvf protobuf-2.5.0.tar.gz
如下效果:
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然后进入protobuf-2.5.0文件夹,进行如下操作:
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- $ sudo ./configure
- $ sudo make
- $ sudo make check
- $ sudo make install
- $ sudo ldconfig
修改环境变量:
- sudo nano /etc/profile
- export LD_LIBRARY_PATH=~/protobuf-2.5.0
(LD_LIBRARY_PATH的这里,填写的是protobuf文件的位置)
- source /etc/profile
注意:配置/etc/profile,在虚拟机重启后,可能配置会失效,所以重启后,需要再次执行source操作。
(3)验证
- protoc --version
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4.安装openssl库
- sudo apt-get install libssl-dev
5.CMake安装
- sudo yum install cmake
或则
- sudo apt-get install cmake
6.ant安装
(1)首先下载ant
百度网盘: apache-ant-1.9.4-bin.tar.gz
http://pan.baidu.com/s/1c0vjhBy
或则下面链接:
apache-ant-1.9.4-bin.tar.gz
(2)解压
- tar zxvf apache-ant-1.9.4-bin.tar.gz
(3)配置环境变量
如下图所示:
1.打开profile
- sudo vi /etc/profile
2.添加下图红字部分,记得修改成自己的路径
3.生效
- source /etc/profile
4.检验
- ant -version
四、编译hadoop2.4
上面准备工作已经做的差不多了,我们终于可以开始,记得进入src文件夹下,输入下面命令
- mvn package -Pdist,native -DskipTests -Dtar
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等了40多分钟,ok
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在目录~/hadoop-2.4.0-src/hadoop-dist/target下有文件:
hadoop-2.4.0.tar.gz
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更多内容:hadoop2.4汇总:hadoop2.4插件下载、完全分布式、伪分布、eclipse插件开发大全
问题总结:
这里还需要在补充:
1.遇到错误1:CMake没有安装
- [ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-
- plugin:1.6:run (make) on project hadoop-common: An Ant BuildException has
- occured: Execute failed: java.io.IOException: Cannot run program "cmake" (in
- directory "/home/wyf/hadoop-2.0.2-alpha-src/hadoop-common-project/hadoop-
- common/target/native"): java.io.IOException: error=2, No such file or directory
- -> [Help 1]
- [ERROR]
- [ERROR] To see the full stack trace of the errors, re-run Maven with the -e
- switch.
- [ERROR] Re-run Maven using the -X switch to enable full debug logging.
- [ERROR]
- [ERROR] For more information about the errors and possible solutions, please
- read the following articles:
- [ERROR] [Help 1]
- http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
解决方法:
CMake没有安装
- sudo yum install cmake
或则使用
- sudo apt-get install cmake
2.遇到错误2:ant没有安装
- ERROR] Failed to execute goal org.codehaus.mojo.jspc:jspc-maven-plugin:2.0-
- alpha-3:compile (hdfs) on project hadoop-hdfs: Execution hdfs of goal
- org.codehaus.mojo.jspc:jspc-maven-plugin:2.0-alpha-3:compile failed: Plugin
- org.codehaus.mojo.jspc:jspc-maven-plugin:2.0-alpha-3 or one of its dependencies
- could not be resolved: Could not transfer artifact ant:ant:jar:1.6.5 from/to
- central (http://repo.maven.apache.org/maven2): GET request of:
- ant/ant/1.6.5/ant-1.6.5.jar from central failed: Read timed out -> [Help 1]
- [ERROR]
- [ERROR] To see the full stack trace of the errors, re-run Maven with the -e
- switch.
- [ERROR] Re-run Maven using the -X switch to enable full debug logging.
- [ERROR]
- [ERROR] For more information about the errors and possible solutions, please
- read the following articles:
- [ERROR] [Help 1]
- http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
- [ERROR]
- [ERROR] After correcting the problems, you can resume the build with the command
- [ERROR] mvn <goals> -rf :hadoop-hdfs
1.首先下载ant
百度网盘: apache-ant-1.9.4-bin.tar.gz
http://pan.baidu.com/s/1c0vjhBy
或则下面链接:
apache-ant-1.9.4-bin.tar.gz
2.解压
- tar zxvf apache-ant-1.9.4-bin.tar.gz
3.配置环境变量
记得配置环境变量
如下图所示:
1.打开profile
- sudo vi /etc/profile
2.添加下图红字部分,记得修改成自己的路径
3.生效
- source /etc/profile
4.检验
- ant -version
3.protobuf版本过低,错误现象
- [ERROR] Failed to execute goal org.apache.hadoop:hadoop-maven-plugins:2.4.0:prot
- oc (compile-protoc) on project hadoop-common: org.apache.maven.plugin.MojoExecut
- ionException: 'protoc --version' did not return a version -> [Help 1]
- [ERROR]
- [ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
- ch.
- [ERROR] Re-run Maven using the -X switch to enable full debug logging.
- [ERROR]
- [ERROR] For more information about the errors and possible solutions, please rea
- d the following articles:
- [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionE
- xception
- [ERROR]
- [ERROR] After correcting the problems, you can resume the build with the command
- [ERROR] mvn <goals> -rf :hadoop-common
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hadoop2.4对应的版本是protobuf-2.5.0
解决办法:按照安装步骤中protobuf的安装即可
4.权限问题
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解决办法:
(1)加上sudo
(2)通过
- ll
安装包解压之后,所属用户可能发生变化:
改变用户
sudo chown -Raboutyun:aboutyun hadoop-2.4.0-src
上面aboutyun改成自己的所属组和用户
命令查看是否属于当前用户