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From Charles Robertson <charles.robert...@gmail.com>
Subject Re: Cannot start DataNode after adding new volume
Date Tue, 16 Sep 2014 10:11:19 GMT
Hi Susheel,

Thanks for the reply. I'm not entirely sure what you mean.

When I created the new directory on the new volume I simply created an
empty directory. I see from the existing data node directory that it has a
sub-directory called current containing a file called VERSION.

Your advice is to create the 'current' sub-directory and copy the VERSION
file across to it without changes? I see it has various guids, and so I'm
worried about it clashing with the VERSION file in the other data directory.


On 16 September 2014 10:57, Susheel Kumar Gadalay <skgadalay@gmail.com>

> Is it something to do current/VERSION file in data node directory.
> Just copy from the existing directory and start.
> On 9/16/14, Charles Robertson <charles.robertson@gmail.com> wrote:
> > Hi all,
> >
> > I am running out of space on a data node, so added a new volume to the
> > host, mounted it and made sure the permissions were set OK. Then I
> updated
> > the 'DataNode Directories' property in Ambari to include the new path
> > (comma separated, i.e. '/hadoop/hdfs/data,/data/hdfs'). Next I restarted
> > the components with stale configs for that host, but the DataNode
> wouldn't
> > come back up, reporting 'connection refused'. When I remove the new data
> > directory path from the property and restart, it starts fine.
> >
> > What am I doing wrong?
> >
> > Thanks,
> > Charles
> >

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