Hadoop cluster master server has namenode, two slave servers have DataNode, is that right?

main server jps shows

clipboard.png

DataNodeDataNode

jps:

clipboard.png

clipboard.png

clipboard.png

dead nodes is displayed as 0

Hadoop linux linux-operation-and-maintenance linux-programming centos
Mar.10,2021

No problem.
started successfully.

Previous: Problems with js array operation

Next: (controller) query of routing configuration item in Yii2

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-427990e-4968.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-427990e-4968.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?