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IntWritable
【Hive六】Hive用户自定义函数(UDF)
Hive是一个很开放的系统,很多内容都支持用户定制,包括: 文件格式:Text File,Sequence File 内存中的数据格式: Java Integer/String, Hadoop
IntWritable
bit1129
·
2015-03-10 15:00
自定义函数
mapreduce-combiner函数使用例子代码
importorg.apache.hadoop.fs.Path;importorg.apache.hadoop.io.
IntWritable
;importorg.apache.hadoop.mapreduce.Job
u012965373
·
2015-02-02 22:00
mapreduce-查找最高气温的Main类
packagecom;importorg.apache.hadoop.fs.Path;importorg.apache.hadoop.io.
IntWritable
;importorg.apache.hadoop.io.Text
u012965373
·
2015-02-01 00:00
mapreduce-查找最高气温的Reducer类
packagecom;importjava.io.IOException;importorg.apache.hadoop.io.
IntWritable
;importorg.apache.hadoop.io.Text
u012965373
·
2015-02-01 00:00
mapreduce-查找最高气温的Mapper类
packagecom;importjava.io.IOException;importorg.apache.hadoop.io.
IntWritable
;importorg.apache.hadoop.io.LongWritable
u012965373
·
2015-01-31 20:00
KeyValueTextInputFormat
;importorg.apache.hadoop.conf.Configured;importorg.apache.hadoop.fs.Path;importorg.apache.hadoop.io.
IntWritable
Zero零_度
·
2015-01-11 18:00
hadoop
Hadoop-2.4.1学习之Writable及其实现
Hadoop基于DataInput和DataOutput实现了简单、高效的序列化协议,而Writable接口定义了Hadoop序列化的方法,MapReduce框架中的任何键值类型都实现了该接口,比如
IntWritable
sky_walker85
·
2014-12-23 09:00
text
Writable
IntWritable
Hadoop-2.4.1
Hadoop分布式文件系统和I/O
数据类型Hadoop提供的数据类型,如下所示:BooleanWritable:标准布尔型数值ByteWritable:单字节数值DoubleWritable:双字节数FloatWritable:浮点数
IntWritable
recommender_system
·
2014-12-17 16:00
java
hadoop
Data
sequenceFile
structure
MapFile
hadoop wordcount代码事例详解
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
nana_93
·
2014-12-14 09:00
MapReduce使用JobControl管理实例
; importjava.util.StringTokenizer; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
Man_华
·
2014-12-01 22:00
hadoop自定义数据类型
Hadoop内置的数据类型BooleanWritable:标准布尔型数值ByteWritable:单字节数值DoubleWritable:双字节数值FloatWritable:浮点数
IntWritable
renzeGIS
·
2014-11-10 08:00
hadoop
MapReduce 新旧WordCount 代码解读
import java.util.StringTokenizer; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
baolibin528
·
2014-08-21 19:00
mapreduce
新旧WordCou
Hadoop中排序
importjava.io.IOException; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.Text; importorg.apache.hadoop.io.
IntWritable
kingszelda
·
2014-08-20 19:00
hadoop
Hadoop中求最高气温
Hadoop中求最高气温 importjava.io.IOException; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
kingszelda
·
2014-08-20 19:00
hadoop
气温
MapReduce例程-气象站-计算最低、最高温度
TemperatureMR.javapackage cn.kissoft.hadoop.week05; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
悟空太多啦
·
2014-08-15 12:00
mapreduce
hadoop
Hive学习笔记之--Hive 高级编程<转>
产生背景产生背景为了满足客户个性化的需求,Hive被设计成一个很开放的系统,很多内容都支持用户定制,包括:•文件格式:TextFile,SequenceFile•内存中的数据格式:JavaInteger/String,Hadoop
IntWritable
yongjian_luo
·
2014-07-18 13:00
Mahout: CVB
When run cvb, there is a error org.apache.hadoop.io.Text cannot be cast to org.apache.hadoop.io.
IntWritable
ylzhj02
·
2014-06-19 18:00
Mahout
hadoop从oracle中到数据
importjava.io.IOException; importjava.util.Iterator;importjava.util.List;importjava.util.Map;importorg.apache.hadoop.io.
IntWritable
caolinsheng
·
2014-06-13 14:00
Hadoop的数据类型
BooleanWritable:标准布尔型数值 ByteWritable:单字节数值 DoubleWritable:双字节数 FloatWritable:浮点数
IntWritable
:
794068648
·
2014-06-05 11:43
hadoop
数据类型
hadoop学习笔记之数据排序
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
earbao
·
2014-06-04 18:00
hadoop学习笔记之wordcount
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
earbao
·
2014-06-02 16:00
Hadoop MapReduce程序开发(二)
com.wordcount.map; import java.io.IOException; import java.util.StringTokenizer; import org.apache.hadoop.io.
IntWritable
hxl1988_0311
·
2014-05-04 22:00
mapreduce
hadoop
Hapdoop的一个Mapreduce示例代码--统计单词个数
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
梦朝思夕
·
2014-04-29 17:13
Hapdoop
Hapdoop的一个Mapreduce示例代码--统计单词个数
importorg.apache.hadoop.conf.Configuration;importorg.apache.hadoop.fs.Path;importorg.apache.hadoop.io.
IntWritable
梦朝思夕
·
2014-04-29 17:13
Hapdoop
Hadoop
hadoop1.2.1 MultipleOutputs将结果输出到多个文件或文件夹
使用步骤主要有三步: 1、在reduce或map类中创建MultipleOutputs对象,将结果输出 class reduceStatistics extends Reducer<Text,
IntWritable
退役的龙弟弟
·
2014-04-24 09:00
hadoop
hadoop、求最大气温、mapper、reduce
其中mapper为: package mapper; import java.io.IOException; import org.apache.hadoop.io.
IntWritable
;import
thunderwap
·
2014-04-02 22:00
Hadoop 第一个Hadoop程序
MaxTemperatureMapper.java package com.hadoop.study.chap01; import java.io.IOException; import org.apache.hadoop.io.
IntWritable
风过无声
·
2014-03-01 12:00
hadoop
Hadoop2.2.0 mapreduce 例子
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
hxpjava1
·
2014-02-27 20:00
hadoop实例分析之WordCount单词统计分析
MyMapper.javapackagecom.mpred; importjava.io.IOException; importorg.apache.hadoop.io.
IntWritable
;importorg.apache.hadoop.io.LongWr
zwx19921215
·
2014-02-26 11:00
hadoop
wordcount
分析
实例
Hadoop案例数据去重
org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
蓝狐乐队
·
2014-02-21 16:00
Hive学习笔记之--Hive 高级编程
产生背景产生背景为了满足客户个性化的需求,Hive被设计成一个很开放的系统,很多内容都支持用户定制,包括:•文件格式:TextFile,SequenceFile•内存中的数据格式:JavaInteger/String,Hadoop
IntWritable
lichangzai
·
2014-02-07 14:00
hive udaf 例子
importorg.apache.hadoop.hive.ql.exec.UDAF;importorg.apache.hadoop.hive.ql.exec.UDAFEvaluator;importorg.apache.hadoop.io.
IntWritable
duan19056
·
2014-01-08 16:18
Hadoop: LongWritable cannot be cast to org.apache.hadoop.io.
IntWritable
写MR Job的时候遇到一个坑爹的异常: LongWritable cannot be cast to org.apache.hadoop.io.
IntWritable
当写Map的时候
dacoolbaby
·
2013-12-22 12:00
hadoop
Hadoop_MapReduce中的WordCount运行详解
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
net19880504
·
2013-12-13 15:00
mapreduce
hadoop
详解mapreduce过程
一.数据类型BooleanWritable:标准布尔型数值ByteWritable:单字节数值DoubleWritable:双字节数值FloatWritable:浮点数
IntWritable
:整型数LongWritable
坚持到底cw
·
2013-11-27 15:16
hadoop学习整理
Hadoop 使用新API写hello word
org.apache.hadoop.conf.Configured; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
bo_hai
·
2013-11-23 16:00
hadoop
Hadoop 统计不同引用次数的专利数目(三)
org.apache.hadoop.conf.Configured; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
bo_hai
·
2013-11-23 16:00
hadoop
IntWritable
源码学些 - hadoop-1.2.1
/** *LicensedtotheApacheSoftwareFoundation(ASF)underone *ormorecontributorlicenseagreements.SeetheNOTICEfile *distributedwiththisworkforadditionalinformation *regardingcopyrightownership.TheASFlic
pczhangtl
·
2013-11-21 10:00
hadoop
IntWritable
Hadoop2.0 YARN cloudra4.4.0 WordCount实例
importorg.apache.hadoop.conf.Configuration; importorg.apache.hadoop.fs.Path; importorg.apache.hadoop.io.
IntWritable
luyee2010
·
2013-11-14 20:00
hadoop
WordCount程序详解
hellohadoophelloword 下面是map函数importjava.io.IOException; importjava.util.StringTokenizer; importorg.apache.hadoop.io.
IntWritable
houzuoxin
·
2013-11-01 10:00
Hadoop二次排序<转>
org.apache.Hadoop.conf.Configuration; import org.apache.Hadoop.fs.Path; import org.apache.Hadoop.io.
IntWritable
yongjian_luo
·
2013-10-16 16:00
hadoop数据类型
Hadoop内置的数据类型BooleanWritable:标准布尔型数值ByteWritable:单字节数值DoubleWritable:双字节数值FloatWritable:浮点数
IntWritable
u010069855
·
2013-10-11 15:00
hadoop细节---Mapreduce过程详解
.先回顾一下hadoopapi中的数据类型:BooleanWritable:标准布尔型数值ByteWritable:单字节数值DoubleWritable:双字节数值FloatWritable:浮点数
IntWritable
坚持到底cw
·
2013-10-04 16:06
hadoop学习整理
mapreduce排序(自定义Partition)
org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
sunasheng
·
2013-09-13 09:00
mapreduce
hadoop
partition
mapreduce排序中java.io.IOException: Illegal partition for 2 (-1)
partition for 2 (-1) 自定义Partition代码: public static class Partition extends Partitioner<
IntWritable
sunasheng
·
2013-09-13 09:00
mapreduce
hadoop
partition
IOException
基于hadoop 1.0.4版本的气象温度统计源代码
importorg.apache.hadoop.conf.Configuration;importorg.apache.hadoop.fs.Path;importorg.apache.hadoop.io.
IntWritable
xyfengbo
·
2013-09-06 18:00
hadoop
气象温度统计源代码
Hadoop Map-Reduce 天气示例
Mapper类:/* */ packagecom.charles.parseweather; importjava.io.IOException; importorg.apache.hadoop.io.
IntWritable
Mrknowledge
·
2013-09-06 10:00
hadoop io
一、基本数据类型 Hadoop 中,并没有使用java自带的基本类型类(Integer、Float等)而是使用了自己开发的类
IntWritable
、FloatWritable、BooleanW
rose-zh
·
2013-09-02 10:00
hadoop
[实验]hadoop例子 在线用户分析
假设事件日志中以逗号分割字段,第5个字段为用户识别码 public class ActiveUserMapper extends Mapper<Object, Text, Text,
IntWritable
GQM
·
2013-08-30 15:00
hadoop
hadoop客户端提交job的java代码
org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.
IntWritable
madbluesky
·
2013-08-28 09:00
hadoop
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