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MapReduce, mail # user - Cluster lost IP addresses


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Re: Cluster lost IP addresses
Harsh J 2013-03-23, 05:12
NameNode does not persist block locations; so this is still
recoverable if the configs are changed to use the new set of hostnames
to bind to/look up.

On Sat, Mar 23, 2013 at 9:01 AM, Azuryy Yu <[EMAIL PROTECTED]> wrote:
> it has issues, namenode save blockid->nodes, using ip addr if your slaves
> config file using ip addr instead of hostname.
>
> On Mar 23, 2013 10:14 AM, "Balaji Narayanan (பாலாஜி நாராயணன்)"
> <[EMAIL PROTECTED]> wrote:
>>
>> Assuming you are using hostnAmes and not ip address in your config files
>> What happens when you start the cluster? If you are using IP address in your
>> configs just update them and start. It should work with no issues.
>>
>> On Friday, March 22, 2013, John Meza wrote:
>>>
>>> I have a 18 node cluster that had to be physically moved.
>>> Unfortunately all the ip addresses were lost (recreated).
>>>
>>> This must have happened to someone before.
>>> Nothing else on the machines has been changed. Most importantly the data
>>> in HDFS is still sitting there.
>>>
>>> Is there a way to recover this cluster to a useable state?
>>> thanks
>>> John
>>
>>
>>
>> --
>> http://balajin.net/blog
>> http://flic.kr/balajijegan

--
Harsh J