[root@centos00 ~]$ cd hadoop-2.6.0-cdh5.14.2/ [root@centos00 hadoop-2.6.0-cdh5.14.2]$ sbin/hadoop ...
root centos cd hadoop . . cdh . . root centos hadoop . . cdh . . sbin hadoop daemon.sh start namenode root centos hadoop . . cdh . . sbin hadoop daemon.sh start datanode root centos hadoop . . cdh . ...
2020-09-14 11:48 0 1289 推薦指數:
[root@centos00 ~]$ cd hadoop-2.6.0-cdh5.14.2/ [root@centos00 hadoop-2.6.0-cdh5.14.2]$ sbin/hadoop ...
原博文來自於: http://blog.csdn.net/u012297062/article/details/52207934 感謝! 使用Spark SQL中的內置函數對數據進行分析,Spark SQL API不同的是,DataFrame中的內置函數操作的結果是返回一個 ...
[root@centos00 ~]$ cd /opt/cdh5.14.2/hadoop-2.6.0-cdh5.14.2/ [root@centos00 hadoop-2.6.0-cdh5.14. ...
開發環境:spark:2.2.0 工具:IDEA OS:Windows 數據文件: 001E8CB5AB11,ASUSTek,2018-07-12 14:00:57, ...
[root@centos00 ~]$ cd /opt/cdh5.14.2/hadoop-2.6.0-cdh5.14.2/ [root@centos00 hadoop-2.6.0-cdh5.14. ...
[root@centos00 ~]$ cd /opt/cdh5.14.2/hadoop-2.6.0-cdh5.14.2/ [root@centos00 hadoop-2.6.0-cdh5.14. ...
一、<choose><when><otherwise> 這是一套標簽, 功能類似於 switch...case... ...