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我在部署本地文件HDFS面臨的問題,我發現我應該有「drwx ------」爲數據節點和名稱節點。 hdfs中datanode和namenode的初始權限狀態。無法啓動數據節點的數據節點和文件權限更改時start-dfs.sh開始
drwx------ 3 hduser hadoop 4096 Mar 2 16:45 datanode
drwxr-xr-x 3 hduser hadoop 4096 Mar 2 17:30 namenode
許可數據節點的改變爲755
[email protected]:~$ chmod -R 755 /usr/local/hadoop_store/hdfs/
[email protected]:~$ ls -l /usr/local/hadoop_store/hdfs/
total 8
drwxr-xr-x 3 hduser hadoop 4096 Mar 2 16:45 datanode
drwxr-xr-x 3 hduser hadoop 4096 Mar 2 17:30 namenode
發起start-dfs.sh之後,數據節點沒有啓動和許可數據節點都恢復到原來的狀態。
[email protected]:~$ $HADOOP_HOME/sbin/start-dfs.sh
Starting namenodes on [localhost]
localhost: starting namenode, logging to /usr/local/hadoop/logs/hadoop- hduser-namenode-pradeep.out
localhost: starting datanode, logging to /usr/local/hadoop/logs/hadoop-hduser-datanode-pradeep.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/logs/hadoop-hduser-secondarynamenode-pradeep.out
[email protected]:~$ jps
4385 Jps
3903 NameNode
4255 SecondaryNameNode
[email protected]:~$ ls -l /usr/local/hadoop_store/hdfs/
total 8
drwx------ 3 hduser hadoop 4096 Mar 2 22:34 datanode
drwxr-xr-x 3 hduser hadoop 4096 Mar 2 22:34 namenode
由於Datanode未運行,我無法從本地文件系統向hdfs部署數據。我無法理解或找到爲什麼文件權限僅恢復到datanode文件夾的以前狀態的任何原因。
發佈的Datanode的日誌文件的內容 – Alex