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


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Re: 答复: interval from Live to Dead about DataNode
Yes. The default is 30s.
On Thu, Jul 4, 2013 at 11:10 AM, Francis.Hu <[EMAIL PROTECTED]>wrote:

>  Nicolas,****
>
> ** **
>
> Thanks for your help. had a look at HDFS-3703.****
>
> ** **
>
> So I need to turn on dfs.namenode.check.stale.datanode ****
>
> and set a shorter time for dfs.namenode.stale.datanode.interval****
>
> ** **
>
> Thanks,****
>
> Francis.Hu****
>
> ** **
>
> *发件人:* Nicolas Liochon [mailto:[EMAIL PROTECTED]]
> *发送时间:* Thursday, July 04, 2013 16:28
> *收件人:* [EMAIL PROTECTED]
> *主题:* Re: interval from Live to Dead about DataNode****
>
> ** **
>
> 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****
>
> ** **
>