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From Suresh Srinivas <sur...@hortonworks.com>
Subject Re: HDFS federation configuration
Date Thu, 23 Jan 2014 18:14:40 GMT
Have you looked at -
http://hadoop.apache.org/docs/r2.2.0/hadoop-project-dist/hadoop-hdfs/Federation.html
?



On Thu, Jan 23, 2014 at 9:35 AM, AnilKumar B <akumarb2010@gmail.com> wrote:

> Hi,
>
> We tried setting up HDFS name node federation set up with 2 name nodes. I
> am facing few issues.
>
> Can any one help me in understanding below points?
>
> 1) how can we configure different namespaces to different name node? Where
> exactly we need to configure this?
>
See the documentation. If it is not clear, please open a jira.


>
> 2) After formatting each NN with one cluster id, Do we need to set this
> cluster id in hdfs-site.xml?
>
There is no need to set the cluster id in hdfs-site.xml


>
> 3) I am getting exception like, data dir already locked by one of the NN,
> But when don't specify data.dir, then it's not showing exception. So what
> could be the issue?
>

Are you running the two namenode processes on the same machine?

>
> Thanks & Regards,
> B Anil Kumar.
>



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