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From Mehul Choube <Mehul_Cho...@symantec.com>
Subject RE: what happens when a datanode rejoins?
Date Tue, 11 Sep 2012 09:07:15 GMT
I apologize for this :( I thought the earlier mail didn't go through

-----Original Message-----
From: Harsh J [mailto:harsh@cloudera.com] 
Sent: Tuesday, September 11, 2012 2:31 PM
To: user@hadoop.apache.org
Subject: Re: what happens when a datanode rejoins?

Hi Mehul,

Please do not send multiple mails with the same questions. We've
already answered this at your other post, follow thread at:
http://mail-archives.apache.org/mod_mbox/hadoop-user/201209.mbox/%3cE884EC9CD547324B8976A5D37317AC566D11C7FC6C@APJ1XCHEVSPIN30.SYMC.SYMANTEC.COM%3e

On Tue, Sep 11, 2012 at 2:09 PM, mehul choube <mchoube@gmail.com> 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
>
>



-- 
Harsh J

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