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MapReduce, mail # user - Re: interval from Live to Dead about DataNode


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Re: interval from Live to Dead about DataNode
Nicolas Liochon 2013-07-04, 08:27
Hi,

It's 10 minutes and 30s.

See the stale mode described in HDFS-3703 if you need something shorter.

Cheers,

Nicolas
On Thu, Jul 4, 2013 at 10:05 AM, Francis.Hu <[EMAIL PROTECTED]>wrote:

>  Hi,All****
>
> ** **
>
> Does anyone know when the status of datanode switch from live to dead at
> the internal of namenode ?****
>
> ** **
>
> the scenario:****
>
> When i stopped a datanode with command, the status of that datanode in the
> web UI of namenode displays 'live' and 'In Service' for almost 5 minutes.
> ****
>
> I know the default value of datanode dfs.hreadbeat.interval is set as 3
> seconds and dfs.namenode.decommission.interval is set 30 seconds.****
>
> ** **
>
> Thanks,****
>
> Francis.Hu****
>