Mailing-List: contact dev-help@geronimo.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@geronimo.apache.org
Received-SPF: pass (nike.apache.org: domain of ashjain2@gmail.com designates
 209.85.217.224 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=VjFALKLvbnqsjQdwaPnqS7EIHtpILXGvpMBonUnTskwOVtWuZJum1dmNXevpctLWhU
         jFR3bopcT3N1b8o83p1W7nPRg2PwcR61+R0o4YRO8C85cgrhBCHjU54UTmmft1wH3rEV
         PYeyo5qf2xDYwt7HpLzYierF0tSzlrqEFH5io=
MIME-Version: 1.0
In-Reply-To: <t2se2a4bcba1004130121z4e7a750du1e63c1a7a5ffa749@mail.gmail.com>
References: <t2se2a4bcba1004130121z4e7a750du1e63c1a7a5ffa749@mail.gmail.com>
Date: Tue, 13 Apr 2010 20:04:10 +0530
Message-ID: <s2q14af40511004130734kb2f17c4an1d5981a8600ab4b4@mail.gmail.com>
Subject: Re: Applications are rendered unavailable when resources dependencies
	are redeployed
From: Ashish Jain <ashjain2@gmail.com>
To: dev@geronimo.apache.org
Content-Type: multipart/alternative; boundary=001485f7cad69c97f504841f276d

--001485f7cad69c97f504841f276d
Content-Type: text/plain; charset=ISO-8859-1

Hi Amit,

I think you may want to try this scenario out. You can try looking onto the
redeploy functionality and try a similar scenario and see the behavior.
Look into classses ConfigurationStatus, ConfigurationModel and see how the
childs are being stopped.

IIUC I do not see much issue in keeping the app up while the dependencies
are down only if the errors are logged properly. Probably others can
provide better insight on this.

Thanks
Ashish

On Tue, Apr 13, 2010 at 1:51 PM, Amit Puri <puri.amit@gmail.com> wrote:

> Hi All
>
> In a large enterprise where App's are deployed on a number of Geronimo
> servers, we are facing some issues while redeploying the dependencies. Here
> is the outline of the issue being faced:
>
> When one of its dependencies is being redeployed, a running application is
> stopped. In config.xml too, load attribute is set to false. Let's take an
> example, Application A is depending on dbpool B. While you redeploy B,
> Geronimo will stop A and redeploy dbpool B but it will not restart A. We
> have to manually start the app by using the deploy script with the start
> command or set load to true in config.xml and restart the server.
>
> As per standard design of application life-cycle in Geronimo, when we
> redeploy the dependency of an application, it will unload the application
> first and redeploy the dependencies, it will  keep load="false" to app
> module in config.xml. But as per our requirement, we need to keep
> applications loaded in an executable state even when its dependencies are
> being redeployed. Is it feasible to do in Geronimo? Please comment.
>
> Thanks
> Amit
>

--001485f7cad69c97f504841f276d
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Hi Amit,<br><br>I think you may want to try this scenario out. You can try =
looking onto the redeploy functionality and try a similar scenario and see =
the behavior.<br>Look into classses ConfigurationStatus, ConfigurationModel=
 and see how the childs are being stopped.<br>
<br>IIUC I do not see much issue in keeping the app up while the dependenci=
es are down only if the errors are logged properly. Probably others can<br>=
provide better insight on this. <br><br>Thanks<br>Ashish<br><br><div class=
=3D"gmail_quote">
On Tue, Apr 13, 2010 at 1:51 PM, Amit Puri <span dir=3D"ltr">&lt;<a href=3D=
"mailto:puri.amit@gmail.com">puri.amit@gmail.com</a>&gt;</span> wrote:<br><=
blockquote class=3D"gmail_quote" style=3D"border-left: 1px solid rgb(204, 2=
04, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi All<br><br>In a large enterprise where App&#39;s are deployed on a numbe=
r of Geronimo servers, we are facing some issues while redeploying the depe=
ndencies. Here is the outline of the issue being faced:<br><br>When one of =
its dependencies is being redeployed, a running application is stopped. In =
config.xml too, load attribute is set to false. Let&#39;s take an example, =
Application A is depending on dbpool B. While you redeploy B, Geronimo will=
 stop A and redeploy dbpool B but it will not restart A. We have to manuall=
y start the app by using the deploy script with the start command or set lo=
ad to true in config.xml and restart the server. <br>


<br>As per standard design of application life-cycle in Geronimo, when we r=
edeploy the dependency of an application, it will unload the application fi=
rst and redeploy the dependencies, it will=A0 keep load=3D&quot;false&quot;=
 to app module in config.xml. But as per our requirement, we need to keep a=
pplications loaded in an executable state even when its dependencies are be=
ing redeployed. Is it feasible to do in Geronimo? Please comment.<br>


<br>Thanks<br><font color=3D"#888888">Amit<br>
</font></blockquote></div><br>

--001485f7cad69c97f504841f276d--