编程问答
Type mismatch in value from map: expected org.apache.hadoop.io.NullWritable, recieved org.apache.hadoop.io.Text(映射中的值类型不匹配:预期 org.apache.hadoop.io.NullWritable，收到 org.apache.hadoop.io.Text)
Hadoop FileSystem closed exception when doing BufferedReader.close()(执行 BufferedReader.close() 时 Hadoop FileSystem 关闭异常)
/bin/bash: /bin/java: No such file or directory error in Yarn apps in MacOS(/bin/bash:/bin/java: 在 MacOS 的 Yarn 应用程序中没有这样的文件或目录错误)
Multiple lines of text to a single map(多行文本到一个地图)
Gradle Transitive dependency exclusion is not working as expected. (How do I get rid of com.google.guava:guava-jdk5:13.0 ?)(Gradle 传递依赖排除未按预期工作.(我如何摆脱 com.google.guava:guava-jdk5:13.0 ?))
Mapreduce Combiner(Mapreduce 组合器)
Run Hadoop job without using JobConf(不使用 JobConf 运行 Hadoop 作业)
Where does job.setOutputKeyClass and job.setOutputReduceClass refers to?(job.setOutputKeyClass 和 job.setOutputReduceClass 指的是哪里?)
Query in a MongoDB Map Reduce Function(在 MongoDB Map Reduce 函数中查询)
Exception in thread quot;mainquot; org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4. How to resolve this?(线程“main中的异常org.apache.hadoop.ipc.RemoteException:服务器 IPC 版本 9 无法与客
How do i set an Object as the Value for Map output in Hadoop MapReduce?(如何在 Hadoop MapReduce 中将对象设置为 Map 输出的值?)
Error while running Mapreduce(yarn)from windows eclipse(从 windows eclipse 运行 Mapreduce(yarn) 时出错)
