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Subject: Cannot start DataNode after adding new volume
From: Charles Robertson <charles.robertson@gmail.com>
To: user@hadoop.apache.org
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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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<div dir=3D"ltr">Hi all,<div><br></div><div>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 &#39;DataNode Directories&#39; =
property in Ambari to include the new path (comma separated, i.e. &#39;/had=
oop/hdfs/data,/data/hdfs&#39;). Next I restarted the components with stale =
configs for that host, but the DataNode wouldn&#39;t come back up, reportin=
g &#39;connection refused&#39;. When I remove the new data directory path f=
rom the property and restart, it starts fine.</div><div><br></div><div>What=
 am I doing wrong?</div><div><br></div><div>Thanks,</div><div>Charles</div>=
</div>

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