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From: Srimanth Gunturi <srimanth@hortonworks.com>
Date: Wed, 23 Apr 2014 18:15:17 -0700
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 <CALKsdi5XH_PWvJp_CakySu-uhKvRNOuRF5kwsW1KNLuMfeEKkA@mail.gmail.com>
Subject: Re: Configuration changes
To: user@ambari.apache.org
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Hi Anisha,
Ambari updates the config files on hosts during component start.
You might have noticed that the stale configs indicator stays till the
service/component is started.
Regards,
Srimanth


On Wed, Apr 23, 2014 at 5:37 PM, Anisha Agarwal <aagarwal@hexiscyber.com>wrote:

>  Hi,
>
>  I had a question about how configuration changes work?
>
>  So, say I have HDFS and Mapreduce installed, and I want to make a config
> change from the UI.
> I stop the service, make the change, save it, and start the service.
>
>  At what point do the changes get propagated across the cluster? When we
> save the changes, does cluster.xml get updated and pushed to each host at
> that point, or does it happen after we issue the start command?
>
>  Thanks,
> Anisha
>

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<div dir=3D"ltr">Hi Anisha,<div>Ambari updates the config files on hosts du=
ring component start.=A0</div><div>You might have noticed that the stale co=
nfigs indicator stays till the service/component is started.</div><div>Rega=
rds,</div>

<div>Srimanth</div><div><br></div></div><div class=3D"gmail_extra"><br><br>=
<div class=3D"gmail_quote">On Wed, Apr 23, 2014 at 5:37 PM, Anisha Agarwal =
<span dir=3D"ltr">&lt;<a href=3D"mailto:aagarwal@hexiscyber.com" target=3D"=
_blank">aagarwal@hexiscyber.com</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">


<div style=3D"font-size:14px;font-family:Calibri,sans-serif;word-wrap:break=
-word">
<div>Hi,</div>
<div><br>
</div>
<div>I had a question about how configuration changes work?</div>
<div><br>
</div>
<div>So, say I have HDFS and Mapreduce installed, and I want to make a conf=
ig change from the UI.</div>
<div>I stop the service, make the change, save it, and start the service.</=
div>
<div><br>
</div>
<div>At what point do the changes get propagated across the cluster? When w=
e save the changes, does cluster.xml get updated and pushed to each host at=
 that point, or does it happen after we issue the start command?</div>


<div><br>
</div>
<div>Thanks,</div>
<div>Anisha</div>
</div>

</blockquote></div><br></div>

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