apache-ant-1.9.4下载
- 作者: 萌猫苗苗
- 来源: 51数据库
- 2020-09-22
配置hadoop 环境变量 eclipse
a.在master节点上(ubuntu-V01)修改hdfs-site.xml加上以下内容?
<property>?
<name>dfs.permissions</name>?
<value>false</value>?
</property>?
旨在取消权限检查，原因是为了解决我在windows机器上配置eclipse连接hadoop服务器时，配置map/reduce连接后报以下错误，org.apache.hadoop.security.AccessControlException: Permission denied:?
b.同样在master节点上(ubuntu-V01)修改hdfs-site.xml加上以下内容?
<property>?
<name>dfs.web.ugi</name>?
<value>jack,supergroup</value>?
</property>?
原因是运行时，报如下错误 WARN org.apache.hadoop.security.ShellBasedUnixGroupsMapping: got exception trying to get groups for user jack?
应该是我的windows的用户名为jack，无访问权限?
更多权限配置可参看官方说明文档：?
HDFS权限管理用户指南http://hadoop.apache.org/docs/r1.0.4/cn/hdfs_permissions_guide.html?
配置修改完后重启hadoop集群：?
hadoop@ubuntu-V01:~/data$./sbin/stop-dfs.sh?
hadoop@ubuntu-V01:~/data$./sbin/stop-yarn.sh?
hadoop@ubuntu-V01:~/data$./sbin/start-dfs.sh?
hadoop@ubuntu-V01:~/data$./sbin/start-yarn.sh?
二.windows基础环境准备?
windows7(x64),jdk,ant,eclipse,hadoop?
1.jdk环境配置?
jdk-6u26-windows-i586.exe安装后好后配置相关JAVA_HOME环境变量,并将bin目录配置到path?
2.eclipse环境配置?
eclipse-standard-luna-SR1-win32.zip解压到D:\eclipse\目录下并命名eclipse-hadoop?
下载地址：http://developer.eclipsesource.com/technology/epp/luna/eclipse-standard-luna-SR1-win32.zip?
3.ant环境配置?
apache-ant-1.9.4-bin.zip解压到D:\apache\目录下，配置环境变量ANT_HOME,并将bin目录配置到path?
下载地址：http://mirror.bit.edu.cn/apache//ant/binaries/apache-ant-1.9.4-bin.zip?
4.下载hadoop-2.5.2.tar.gz?
http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.5.2/hadoop-2.5.2.tar.gz?
5.下载hadoop-2.5.2-src.tar.gz?
http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.5.2/hadoop-2.5.2-src.tar.gz?
6.下载hadoop2x-eclipse-plugin?
https://github.com/winghc/hadoop2x-eclipse-plugin?
7.下载hadoop-common-2.2.0-bin?
https://github.com/srccodes/hadoop-common-2.2.0-bin?
分别将hadoop-2.5.2.tar.gz、hadoop-2.5.2-src.tar.gz、hadoop2x-eclipse-plugin、hadoop-common-2.2.0-bin下载解压到F:\hadoop\目录下?
8.修改本地hosts文件，加入如下内容：
192.168.1.112 ubuntu-V01
三、编译hadoop-eclipse-plugin-2.5.2.jar配置?
1.添加环境变量HADOOP_HOME=F:\hadoop\hadoop-2.5.2\?
追加环境变量path内容：%HADOOP_HOME%/bin?
2.修改编译包及依赖包版本信息?
修改F:\hadoop\hadoop2x-eclipse-plugin-master\ivy\libraries.properties?
hadoop.version=2.5.2?
jackson.version=1.9.13?
3.ant编译?
F:\hadoop\hadoop2x-eclipse-plugin-master\src\contrib\eclipse-plugin>?
ant jar -Dversion=2.5.2 -Declipse.home=D:\eclipse\eclipse-hadoop\eclipse -Dhadoop.home=F:\hadoop\hadoop-2.5.2?
编译好后hadoop-eclipse-plugin-2.5.2.jar会在F:\hadoop\hadoop2x-eclipse-plugin-master\build\contrib\eclipse-plugin目录下?
四、eclipse环境配置?
1.将编译好的hadoop-eclipse-plugin-2.5.2.jar拷贝至eclipse的plugins目录下，然后重启eclipse?
2.打开菜单Window--Preference--Hadoop Map/Reduce进行配置，如下图所示：?
3.显示Hadoop连接配置窗口：Window--Show View--Other-MapReduce Tools,如下图所示：?
4.配置连接Hadoop，如下图所示：?
查看是否连接成功，能看到如下信息，则表示连接成功：?
五、hadoop集群环境添加测试文件
(如果已有则无需配置)?
a.dfs上创建input目录?
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -mkdir -p input?
b.把hadoop目录下的README.txt拷贝到dfs新建的input里?
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -copyFromLocal README.txt input?
六、创建一个Map/Reduce Project?
1.新建项目 File--New--Other--Map/Reduce Project 命名为MR1,?
然后创建类org.apache.hadoop.examples.WordCount，从hadoop-2.5.2-src中拷贝覆盖?
（F:\hadoop\hadoop-2.5.2-src\hadoop-mapreduce-project\hadoop-mapreduce-examples\src\main\java\org\apache\hadoop\examples\WordCount.java）?
2.创建log4j.properties文件?
在src目录下创建log4j.properties文件，内容如下：?
log4j.rootLogger=debug,stdout,R?
log4j.appender.stdout=org.apache.log4j.ConsoleAppender?
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout?
log4j.appender.stdout.layout.ConversionPattern=%5p - %m%n?
log4j.appender.R=org.apache.log4j.RollingFileAppender?
log4j.appender.R.File=mapreduce_test.log?
log4j.appender.R.MaxFileSize=1MB?
log4j.appender.R.MaxBackupIndex=1?
log4j.appender.R.layout=org.apache.log4j.PatternLayout?
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n?
log4j.logger.com.codefutures=DEBUG?
3.解决java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)异常问题?
(由于你的环境和我的可能不一致，可以在后面出现相关问题后再进行修改)?
拷贝源码文件org.apache.hadoop.io.nativeio.NativeIO到项目中?
然后定位到570行，直接修改为return true;?
如下图所示：?
七、windows下运行环境配置
(如果不生效，则需要重启机器)?
需要hadoop.dll,winutils.exe?
我是直接拷贝F:\hadoop\hadoop-common-2.2.0-bin-master\bin目录下内容覆盖F:\hadoop\hadoop-2.5.2\bin?
八、运行project
在eclipse中点击WordCount.java，右键，点击Run As—>Run Configurations，配置运行参数，即输入和输出文件夹?
hdfs://ubuntu-V01:9000/user/hadoop/input hdfs://ubuntu-V01:9000/user/hadoop/output?
如下图所示：?
a.在master节点上(ubuntu-V01)修改hdfs-site.xml加上以下内容?
<property>?
<name>dfs.permissions</name>?
<value>false</value>?
</property>?
旨在取消权限检查，原因是为了解决我在windows机器上配置eclipse连接hadoop服务器时，配置map/reduce连接后报以下错误，org.apache.hadoop.security.AccessControlException: Permission denied:?
b.同样在master节点上(ubuntu-V01)修改hdfs-site.xml加上以下内容?
<property>?
<name>dfs.web.ugi</name>?
<value>jack,supergroup</value>?
</property>?
原因是运行时，报如下错误 WARN org.apache.hadoop.security.ShellBasedUnixGroupsMapping: got exception trying to get groups for user jack?
应该是我的windows的用户名为jack，无访问权限?
更多权限配置可参看官方说明文档：?
HDFS权限管理用户指南http://hadoop.apache.org/docs/r1.0.4/cn/hdfs_permissions_guide.html?
配置修改完后重启hadoop集群：?
hadoop@ubuntu-V01:~/data$./sbin/stop-dfs.sh?
hadoop@ubuntu-V01:~/data$./sbin/stop-yarn.sh?
hadoop@ubuntu-V01:~/data$./sbin/start-dfs.sh?
hadoop@ubuntu-V01:~/data$./sbin/start-yarn.sh?
二.windows基础环境准备?
windows7(x64),jdk,ant,eclipse,hadoop?
1.jdk环境配置?
jdk-6u26-windows-i586.exe安装后好后配置相关JAVA_HOME环境变量,并将bin目录配置到path?
2.eclipse环境配置?
eclipse-standard-luna-SR1-win32.zip解压到D:\eclipse\目录下并命名eclipse-hadoop?
下载地址：http://developer.eclipsesource.com/technology/epp/luna/eclipse-standard-luna-SR1-win32.zip?
3.ant环境配置?
apache-ant-1.9.4-bin.zip解压到D:\apache\目录下，配置环境变量ANT_HOME,并将bin目录配置到path?
下载地址：http://mirror.bit.edu.cn/apache//ant/binaries/apache-ant-1.9.4-bin.zip?
4.下载hadoop-2.5.2.tar.gz?
http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.5.2/hadoop-2.5.2.tar.gz?
5.下载hadoop-2.5.2-src.tar.gz?
http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.5.2/hadoop-2.5.2-src.tar.gz?
6.下载hadoop2x-eclipse-plugin?
https://github.com/winghc/hadoop2x-eclipse-plugin?
7.下载hadoop-common-2.2.0-bin?
https://github.com/srccodes/hadoop-common-2.2.0-bin?
分别将hadoop-2.5.2.tar.gz、hadoop-2.5.2-src.tar.gz、hadoop2x-eclipse-plugin、hadoop-common-2.2.0-bin下载解压到F:\hadoop\目录下?
8.修改本地hosts文件，加入如下内容：
192.168.1.112 ubuntu-V01
三、编译hadoop-eclipse-plugin-2.5.2.jar配置?
1.添加环境变量HADOOP_HOME=F:\hadoop\hadoop-2.5.2\?
追加环境变量path内容：%HADOOP_HOME%/bin?
2.修改编译包及依赖包版本信息?
修改F:\hadoop\hadoop2x-eclipse-plugin-master\ivy\libraries.properties?
hadoop.version=2.5.2?
jackson.version=1.9.13?
3.ant编译?
F:\hadoop\hadoop2x-eclipse-plugin-master\src\contrib\eclipse-plugin>?
ant jar -Dversion=2.5.2 -Declipse.home=D:\eclipse\eclipse-hadoop\eclipse -Dhadoop.home=F:\hadoop\hadoop-2.5.2?
编译好后hadoop-eclipse-plugin-2.5.2.jar会在F:\hadoop\hadoop2x-eclipse-plugin-master\build\contrib\eclipse-plugin目录下?
四、eclipse环境配置?
1.将编译好的hadoop-eclipse-plugin-2.5.2.jar拷贝至eclipse的plugins目录下，然后重启eclipse?
2.打开菜单Window--Preference--Hadoop Map/Reduce进行配置，如下图所示：?
3.显示Hadoop连接配置窗口：Window--Show View--Other-MapReduce Tools,如下图所示：?
4.配置连接Hadoop，如下图所示：?
查看是否连接成功，能看到如下信息，则表示连接成功：?
五、hadoop集群环境添加测试文件
(如果已有则无需配置)?
a.dfs上创建input目录?
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -mkdir -p input?
b.把hadoop目录下的README.txt拷贝到dfs新建的input里?
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -copyFromLocal README.txt input?
六、创建一个Map/Reduce Project?
1.新建项目 File--New--Other--Map/Reduce Project 命名为MR1,?
然后创建类org.apache.hadoop.examples.WordCount，从hadoop-2.5.2-src中拷贝覆盖?
（F:\hadoop\hadoop-2.5.2-src\hadoop-mapreduce-project\hadoop-mapreduce-examples\src\main\java\org\apache\hadoop\examples\WordCount.java）?
2.创建log4j.properties文件?
在src目录下创建log4j.properties文件，内容如下：?
log4j.rootLogger=debug,stdout,R?
log4j.appender.stdout=org.apache.log4j.ConsoleAppender?
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout?
log4j.appender.stdout.layout.ConversionPattern=%5p - %m%n?
log4j.appender.R=org.apache.log4j.RollingFileAppender?
log4j.appender.R.File=mapreduce_test.log?
log4j.appender.R.MaxFileSize=1MB?
log4j.appender.R.MaxBackupIndex=1?
log4j.appender.R.layout=org.apache.log4j.PatternLayout?
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n?
log4j.logger.com.codefutures=DEBUG?
3.解决java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)异常问题?
(由于你的环境和我的可能不一致，可以在后面出现相关问题后再进行修改)?
拷贝源码文件org.apache.hadoop.io.nativeio.NativeIO到项目中?
然后定位到570行，直接修改为return true;?
如下图所示：?
七、windows下运行环境配置
(如果不生效，则需要重启机器)?
需要hadoop.dll,winutils.exe?
我是直接拷贝F:\hadoop\hadoop-common-2.2.0-bin-master\bin目录下内容覆盖F:\hadoop\hadoop-2.5.2\bin?
八、运行project
在eclipse中点击WordCount.java，右键，点击Run As—>Run Configurations，配置运行参数，即输入和输出文件夹?
hdfs://ubuntu-V01:9000/user/hadoop/input hdfs://ubuntu-V01:9000/user/hadoop/output?
如下图所示：?
推荐阅读
