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From Christian Smith <>
Subject Re: update mapred-site.xml
Date Thu, 17 Oct 2013 08:29:12 GMT
Hi Gopinath,

You have two options to add that property, either the UI or the API.

In the Ambari UI navigate to Services --> MapReduce --> Configs

Down the bottom you'll see an are to add custom properties.

Your other option is via the API, see the docs here:

Remember that after you add or modify a property, you'll need to stop the
relevant services and start them again.


On Thu, Oct 17, 2013 at 8:00 PM, Gopinath Rebala <> wrote:

> We need to add a property to mapred-site.xml that is not defined in the
> Ambari GUI (thrift plugin for jobtracker). Any changes to mapred-site.xml
> get cleared up restart of JobTracker. We could not find a template for the
> xml in Puppet or otherwise in the suystem that we could change to make use
> of new property.
> What is the recommended way for making changes to configuration files?
> Thanks,
> Gopinath

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