Resources are low on NN. Please add or free up more resources then turn off safe mode manually
hadoop3.x ha 切换回完全分布式
hadoop3.x ha hdfs api上传文件
hadoop 配置机架感知
2.2 GB of 2.1 GB virtual memory used. Killing container.
hadoop3.x client下载文件时，namenode一次性将block信息发送给客户端
hadoop教程目录
hadoop3.x MapReduce Combiner案例
hadoop：map、reduce 运算简单图解
JobHistoryServer进程：yarn historyserver服务