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MapReduce >> mail # user >> what happens when a datanode rejoins?


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Re: what happens when a datanode rejoins?
Yes the cluster will be re balanced.

On Tue, Sep 11, 2012 at 2:09 PM, mehul choube <[EMAIL PROTECTED]> wrote:

> Hi,
>
>
> What happens when an existing (not new) datanode rejoins a cluster for
> following scenarios:
>
>
> a) Some of the blocks it was managing are deleted/modified?
>
> b) The size of the blocks are now modified say from 64MB to 128MB?
>
> c) What if the block replication factor was one (yea not in most
> deployments but say in case) so does the namenode recreate a file once the
> datanode rejoins?
>
>
>
>
> Thanks,
>
> Mehul
>
>
>
--

Shashwat Shriparv