Type mismatch in key from map: expected org.apache.hadoop.io.Text, received org.apache.hadoop.io.Lon
来源:互联网 发布:linux vi 删除多行 编辑:程序博客网 时间:2024/05/22 16:59
这个问题是因为map的方法参数与继承mapper定义的参数类型不一致导致的,
应该将Mapper的key参数类型设置成Object,就可以解决这个问题
0 0
- Type mismatch in key from map: expected org.apache.hadoop.io.Text, received org.apache.hadoop.io.Lon
- Type mismatch in key from map: expected org.apache.hadoop.io.LongWritable, received org.apache.hadoo
- java.io.IOException: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org
- expected org.apache.hadoop.io.IntWritable, recieved org.apache.hadoop.io.Text
- java.io.IOException: Type mismatch in key from map: expected
- org.apache.hadoop.io
- Hadoop笔记十二之 java.io.IOException: expected org.apache.hadoop.io.LongWr
- Hadoop-mapreduce org.apache.hadoop.io.LongWritable cannot be cast to org.apache.hadoop.io.Text错误
- java.io.IOException: Type mismatch in key from map:解决方法
- org.apache.hadoop.io.compress源码解读
- [hadoop源码阅读][4]-org.apache.hadoop.io
- hadoop MR 任务 报错 "Error: java.io.IOException: Premature EOF from inputStream at org.apache.hadoop.io"
- MapReduce中碰到数据覆盖现象,org.apache.hadoop.io.Text.getBytes 问题
- MapReduce——LongWritable cannot be cast to org.apache.hadoop.io.Text 错误原因
- NoSuchMethodException: org.apache.hadoop.io.ArrayWritable.<init>问题解决总结
- 认识org.apache.hadoop.io.compress解码器/编码器
- org.apache.hadoop.io.nativeio.NativeIO$Windows.access0
- Class org.apache.hadoop.io.compress.BZip2Codec not found
- 极客学院30天免费VIP
- iOS-UIKit(UIDatePicker.h--解读)
- 七天学习nodejs学习笔记
- HDU 4449 Building Design 三维凸包+空间坐标变换
- [LeetCode] Best Meeting Point
- Type mismatch in key from map: expected org.apache.hadoop.io.Text, received org.apache.hadoop.io.Lon
- C++的继承与派生
- scrollView 嵌套listView 中重写listView
- Light OJ 1422 Halloween Costumes(区间DP)
- 深入浅出MyBatis-快速入门
- linux精华
- linux下编译动态链接库
- Java日期时间类型
- Python入门基础之二