建立目錄:
hdfs dfs -mkdir -p /user/hadoop/input
上傳小文件:
hdfs dfs -put ./temp /user/hadoop/input
上傳大文件:
bin/hadoop fs -put /opt/module/hadoop-2.7.2.tar.gz /user/hadoop/input
文件存放位置:
/opt/module/hadoop-2.7.2/data/tmp/dfs/data/current/BP-1285140362-127.0.0.1-1592465251406/current/finalized/subdir0/subdir0
從集羣下載:
bin/hadoop fs -get /user/hadoop/input/hadoop-2.7.2.tar.gz ./
顯示文件列表
hdfs dfs -ls /user/hadoop/input
刪除文件:
hadoop fs -rm -r -skipTrash /user/hadoop/input/nginx-1.18.0.tar.gz
集羣啓動/停止方式總結
1. 各個服務組件逐一啓動/停止
(1)分別啓動/停止 HDFS 組件
hadoop-daemon.sh start/stop namenode/datanode/secondarynamenode
(2)啓動/停止 YARN
yarn-daemon.sh start/stop resourcemanager/nodemanager
2. 各個模塊分開啓動/停止(配置 ssh是前提)常用
(1)整體啓動/停止 HDFS
start-dfs.sh / stop-dfs.sh
(2)整體啓動/停止 YARN
start-yarn.sh / stop-yarn.sh