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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: dfs health Dashboard
Date Mon, 02 Nov 2009 15:50:23 GMT



On 11/1/09 10:11 PM, "V Satish Kumar" <satish.kumar@mkhoj.com> wrote:
> I have noticed that the dfs health dashboard(Running on port  50070)
> takes a long time to refresh the number of live nodes and dead nodes. Is
> there a config parameter in hadoop that can be changed to make the
> dashboard shows these changes more quickly?

What do you mean by "long time"?  Hours? Days?

Keep in mind that you don't want a failure to be "instantaneous" because
that means every time there is even a minor, temporary blip the namenode and
the network will be busy replicating blocks that are just going to re-appear
in a minute or so anyway.


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