Hi Sorry to interrupt you.But nobody answer my question in Hadoop maillist. I have met a issue after I change the content of hdfs-site.xml to add another dfs.data.dir in my cluster. /usr/hadoop/tmp/dfs/data is the default value, /sda is the new one
<property>
<name>data.dfs.dir</name>
<value>/usr/hadoop/tmp/dfs/data,/sda</value>
</property>
The permission of /sda has been changed.
[image: 内嵌图片 1]
First I stop the cluster with stop-all.sh and replace the old hdfs-site.xml
with new ones,then I restart the cluster with start-all.sh,but I found that
datanode did not start
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>From Good To Great
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