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hadoop入门系列版本
hadoop入门系列版本
Hadoop
HDFS编程 API
入门系列
之RPC
版本
2(九)
17 18 builder.setBindAddress("
Hadoop
Master").setPort(10000).setProtocol(LoginServiceInterface.class).setInstance(new LoginServiceImpl());19 20 Server server=builder.build();21 22 server.start();23 24 25 26 } 27 28 29 } ...
Hadoop
HDFS编程 API
入门系列
之RPC
版本
1(八)
Put site-specific property overrides in this file.-><configuration><property><name>fs.default.name</name><value>hdfs:/
Hadoop
Master:9000</value><description>The name of the default file system,using 9000 port.</description>...
Hadoop
HDFS编程 API
入门系列
之HdfsUtil
版本
1(六)
7 import org.apache.
hadoop
.conf.Configuration;8 import org.apache.
hadoop
.fs.FSDataInputStream;9 import org.apache.
hadoop
.fs.FileSystem;10 import org.apache.
hadoop
.fs.Path;11 12 public class HdfsUtil { 13 14 15 public ...
Hadoop
HDFS编程 API
入门系列
之HdfsUtil
版本
2(七)
37 38/根据配置信息,去获取一个具体文件系统的客户端操作实例对象 39 fs=FileSystem.get(new URI("hdfs:/
Hadoop
Master:9000/"),conf,"
hadoop
");40 41 42 } 43 44 45 46/*47*上传文件,比较底层的写法 48*49*@throws Exception 50*/51@Test...
Hadoop
MapReduce编程 API
入门系列
之wordcount
版本
3(七)
4 5 import org.apache.
hadoop
.io.IntWritable;6 import org.apache.
hadoop
.io.LongWritable;7 import org.apache.
hadoop
.io.Text;8 import org.apache.
hadoop
.mapreduce.Mapper;9 import org.apache.
hadoop
.util.StringUtils;10 11 public...
Hadoop
MapReduce编程 API
入门系列
之wordcount
版本
2(六)
1、MR执行环境有两种:本地测试环境,服务器环境/本地测试环境(windows):(便于调试)/在windows的
hadoop
目录bin目录有一个winutils.exe/1、在windows下配置
hadoop
的环境变量/2、拷贝debug工具(winutils.exe)到
HADOOP
_HOME/bin/3、修改...
Hadoop
MapReduce编程 API
入门系列
之wordcount
版本
1(五)
这个很简单哈,编程的
版本
很多种。代码
版本
1 1 package zhouls.bigdata.myMapReduce.wordcount5;2 3 import java.io.IOException;4 import java.util.StringTokenizer;5 import org.apache.
hadoop
.conf.Configuration;6 import org.apache....
Hadoop
MapReduce编程 API
入门系列
之wordcount
版本
1(五)
这个很简单哈,编程的
版本
很多种。代码
版本
1 1 package zhouls.bigdata.myMapReduce.wordcount5;2 3 import java.io.IOException;4 import java.util.StringTokenizer;5 import org.apache.
hadoop
.conf.Configuration;6 import org.apache....
Hadoop
MapReduce编程 API
入门系列
之wordcount
版本
4(八)
6 import org.apache.
hadoop
.io.LongWritable;7 import org.apache.
hadoop
.io.Text;8 import org.apache.
hadoop
.mapreduce.Mapper;9 10/4个泛型中,前两个是指定mapper输入数据的类型,KEYIN是输入的key的类型,VALUEIN是输入的value的类型...
Hadoop
MapReduce编程 API
入门系列
之网页流量
版本
1(二十一)
}/从数据流中反序
列
出对象的数据/从数据流中读出对象字段时,必须跟序列化时的顺序保持一致 public void readFields(DataInput in)throws IOException { phoneNB=in.readUTF();up_flow=in.readLong();d_flow=in.readLong();s_flow=in.read...
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中小企业自建Hadoop集群上云解决方案
基于阿里云 E-MapReduce 、OSS 、边缘网络加速等产品及服务,帮助自建 Hadoop 用户快速构建云上半托管开源大数据平台,帮助客户更加便捷地迭代企业大数据平台架构,聚焦业务价值开发。
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立即咨询
查看更多方案
推荐搜索
企业跨地域网络互通
混合云线下线上双活
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中小企业自建Hadoop集群上云解决方案
基于阿里云 E-MapReduce 、OSS 、边缘网络加速等产品及服务,帮助自建 Hadoop 用户快速构建云上半托管开源大数据平台,帮助客户更加便捷地迭代企业大数据平台架构,聚焦业务价值开发。
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立即咨询
查看更多方案
推荐搜索
企业跨地域网络互通
混合云线下线上双活