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MapReduce, mail # user - why multiple checkpoint nodes?


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Re: why multiple checkpoint nodes?
Thanh Do 2013-04-18, 17:20
so reliability (to prevent metadata loss) is the main motivation for
multiple checkpoint nodes?

Does anybody use multiple checkpoint nodes in real life?

Thanks
On Thu, Apr 18, 2013 at 12:07 PM, shashwat shriparv <
[EMAIL PROTECTED]> wrote:

> more checkpoint nodes means more backup of the metadata :)
>
> *Thanks & Regards    *
>
> ∞
> Shashwat Shriparv
>
>
>
> On Thu, Apr 18, 2013 at 9:35 PM, Thanh Do <[EMAIL PROTECTED]> wrote:
>
>> Hi all,
>>
>> The document says "Multiple checkpoint nodes may be specified in the
>> cluster configuration file".
>>
>> Can some one clarify me that why we really need to run multiple
>> checkpoint nodes anyway? Is it possible that while checkpoint node A is
>> doing checkpoint, and check point node B kicks in and does another
>> checkpoint?
>>
>> Thanks,
>> Thanh
>>
>
>