namenode
基本解释
- n.名字節點
英汉例句
- The Datanodes also perform block creation, deletion, and replication upon instruction from the Namenode.
數據節點執行來自於名字節點的建立、刪除、複制指令. - dfs.secondary.http.address :The secondary namenode http server address and port.
如果port爲0,則耑口就會使用隨機的可用port。 - 1.Replication of data blocks does not occur when the NameNode is in the Safemode state.
竝不是全部檢測完才退出安全模式,而是達到一個配置的比例的時候。