datanode集群新加硬盘

将硬盘挂载到指定目录，如/data

在hdfs-site.xml中修改

<property>

<name>dfs.datanode.data.dir</name>

<value>file://${hadoop.tmp.dir}/dfs/data,/data</value>

<description>Determines where on the local filesystem an DFS data node

should store its blocks.  If this is a comma-delimited

list of directories, then data will be stored in all named

directories, typically on different devices.

Directories that do not exist are ignored.

</description>

</property>

重启集群