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Re: dynamic configuration
ReconfigurationServlet is utility for changing a node's
configuration.it Reloads the configuration file, verifies whether
changes are possible and asks the admin to approve the change.

look at the source code available in hadoop bianries.
Raj K Singh
Mobile  Tel: +91 (0)9899821370
On Thu, Aug 15, 2013 at 9:31 AM, lei liu <[EMAIL PROTECTED]> wrote:

> There is ReconfigurationServlet class in hadoop-2.0.5.
> How I to use the function for NameNode and DataNode?
> Thanks,
> LiuLei