idea maven 工程报错 java: -source 1.5 中不支持 diamond 运算符

hadoop3.x MapReduce reduce流程

hadoop3.x MapReduce Combiner案例

hadoop3.x MapReduce 在mapred-site.xml中配置map、reduce压缩

hadoop3.x MapReduce-二次排序

hadoop：map、reduce 运算简单图解

hadoop3.x MapReduce-排序

hadoop3.x MapReduce执行流程-shuffle部分

yarn错误：java.net.BindException: Port in use: 8088

windows hadoop MapReduce 罕见错误：Cleaning up the staging area file:/tmp/hadoop/mapred/staging ... No such file or directory