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From Aaron Zimmerman <>
Subject Re: Dynamic Properties Revisited
Date Tue, 13 May 2014 15:18:35 GMT
I would put it in zookeeper, especially since that's already a dependency.

On Tue, May 13, 2014 at 10:14 AM, King, Craig A. <>wrote:

>  I submitted this question back in March, but did not get any responses.
>  Since a little time has passed, and there are a few more folks on the mail
> list, I thought I would pop it back up again.
>  Thanks in advance,
>  Craig
>  On Mar 14, 2014, at 10:26 AM, King, Craig A. <>
> wrote:
>  This topic was covered before, but it does not entirely fit my use case.
> I am looking for some best practices, or ideas on how to manage user
> names/passwords and other properties that can change at any time.
> The previous discussion revolved around "external" configuration at
> submission time, and can be found here:
> For background, I am doing an analysis of Storm for a DoD/Navy project.
> Within the Navy there are IA (Information Assurance) rules that govern
> password changes (such as passwords must change every 30 or 45 days etc.)
> We also need to design the administration of the system for 19 year old
> sailors with a few months training.
> In order to manage the properties, there would be some web based UI that
> would allow the admin to update passwords and hit a save button. No file
> editing or logging into Nimbus to change configuration files.
> The updated passwords (and other changed properties) should become
> immediately available to all currently running topologies.  There could be
> dozens or even hundreds of topologies running, so killing and resubmitting
> with new properties is not really an option.
> I have a couple of ideas, but I am a storm newbie so I don't know the
> feasibility...
> 1) have the spouts monitor a property server for changes and push
> configuration (would require that all bolts get these streams.)
> 2) have each spout an bolt monitor the said property server.
> 3) use Messaging and have spouts/bolts subscribe to a configuration topic.
> All ideas are welcome.  Thanks in advance.
> Craig

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