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From Bejoy Ks <bejoy.had...@gmail.com>
Subject Re: Physically moving HDFS cluster to new
Date Thu, 18 Apr 2013 05:27:23 GMT
Adding on to the comments

You might need to update the etc-hosts with new values.
If the host name changes as well, you may need to update the

fs.default.name and mapred.job.tracker with new values.



On Thu, Apr 18, 2013 at 10:08 AM, Azuryy Yu <azuryyyu@gmail.com> wrote:

> Data nodes name or IP  changed cannot cause your data loss. only kept
> fsimage(under the namenode.data.dir) and all block data on the data nodes,
> then everything can be recoveryed when your start the cluster.
>
>
> On Thu, Apr 18, 2013 at 1:20 AM, Tom Brown <tombrown52@gmail.com> wrote:
>
>> We have a situation where we want to physically move our small (4 node)
>> cluster from one data center to another. As part of this move, each node
>> will receive both a new FQN and a new IP address. As I understand it, HDFS
>> is somehow tied to the the FQN or IP address, and changing them causes data
>> loss.
>>
>> Is there any supported method of moving a cluster this way?
>>
>> Thanks in advance!
>>
>> --Tom
>>
>
>

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