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From Mark Kerzner <mark.kerz...@shmsoft.com>
Subject Re: Replacing a hard drive on a slave
Date Wed, 28 Nov 2012 15:15:56 GMT
Thank you.

Mark

On Wed, Nov 28, 2012 at 6:51 AM, Stephen Fritz <stephenf@cloudera.com>wrote:

> HDFS will not start re-replicating blocks from a dead DN for 10 minutes 30
> seconds by default.
>
> Right now there isn't a good way to replace a disk out from under a
> running datanode, so the best way is:
> - Stop the DN
> - Replace the disk
> - Restart the DN
>
>
>
>
> On Wed, Nov 28, 2012 at 9:14 AM, Mark Kerzner <mark.kerzner@shmsoft.com>wrote:
>
>> Hi,
>>
>> can I remove one hard drive from a slave but tell Hadoop not to replicate
>> missing blocks for a few minutes, because I will return it back? Or will
>> this not work at all, and will Hadoop continue replicating, since I removed
>> blocks, even for a short time?
>>
>> Thank you. Sincerely,
>> Mark
>>
>
>

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