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From "姚吉龙" <geelong...@gmail.com>
Subject Re: How to make the setting changes works
Date Thu, 25 Apr 2013 04:01:51 GMT
I have already give full permission for that dir.I think this maybe caused by reformatting
the NN.this will lead to different Id of NN and DN
—
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On Thu, Apr 25, 2013 at 12:41 AM, Robert Molina <rmolina@hortonworks.com>
wrote:

> 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 <geelongyao@gmail.com> 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
>>
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