Hi Geelong, What's the ownership and permissions on /usr/hadoop/tmp/dfs/data? If I recall correctly, I believe it should be hdfs:hadoop, where the owner has full permissions and the group can read and execute. Does /var/log for the datanode show any errors?
Regards, Robert * Robert Molina Hortonworks, Inc. Support Engineer Phone: 408.645.7062 <http://hortonworks.com/download/> * On Tue, Apr 23, 2013 at 7:17 PM, Geelong Yao <[email protected]> wrote: > 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 > > -- > From Good To Great >
<<image.png>>
