hadoop3.x MapReduce执行流程-shuffle部分

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

MapReduce编程规范和流程

hadoop3.x 统计词频案例（hadoop-mapreduce-examples）和web管理页面

spring事务-传播

springboot @SpringBootApplication注解

springboot 主启动类与要扫描的包不在同一个路径（@SpringBootApplication）

Logback教程：创建表logging_event、logging_event_exception、logging_event_property

TableException: EXPR$1 is not found in PojoType<test.TestTable读取文件_分组sql$Order, fields = [name: String, price: Double, username: String]>

springmvc 下载文件、中文乱码