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From Imesha Sudasingha <imesha...@cse.mrt.ac.lk>
Subject Re: [GSoC 2017] Distributed Configuration Management - Discussion
Date Mon, 12 Jun 2017 10:16:28 GMT
Hi Tom,

Thanks for the details. Yes, we can store the XML file content in zookeeper
and fetch those XML content in the runtime (probably when starting up).
I will implement and test it that way so that we can discuss further on the
pros and cons. I will update you soon.

Kind Regards,
*Imesha Sudasingha*
Undergraduate of Department of Computer Science and  Engineering,
University of Moratuwa,
Sri Lanka.

<https://lk.linkedin.com/in/imeshasudasingha>  <https://github.com/IMS94>

On 12 June 2017 at 14:57, Tom Barber <tom.barber@meteorite.bi> wrote:

> Hi Imesha
> Thanks for the questions:
> I think for multiplicities sake you can assume that all configs will be
> identical on all nodes, for now at least, we can fine tune that in the
> future.
> The XML files are the type of thing that would be very useful to have in a
> centralised configuration setup. Take elements.xml,
> product-type-element-map.xml and product-types.xml. These do some of the
> heavy definition work in the file manager. If they actually lived in ZK
> they would be far more flexible over a multinode setup, instead of reading
> them from XML, can we just read the XML file content direct from ZK?
> Tom
> On Sat, Jun 10, 2017 at 8:25 AM, Imesha Sudasingha <
> imesha.13@cse.mrt.ac.lk> wrote:
>> Hi Tom,
>> I have started going through the code in deep in order to continue
>> distributed configuration manager development. Following are some
>> approaches that came to my mind and few questions I need to get clarified.
>> As I understand, all 3 major components (Resource Manager, File Manager
>> and the Workflow Manager) *use several other files (ex: xml files
>> located at policy/*)* which are used for additional configuration (ex:
>> for mime type repository). However, all those file locations are found
>> through properties in the *.properties* file at runtime. When
>> implementing distributed configuration management, I have two options.
>>    1. *Assuming that all such files are the same for all nodes*, ask
>>    users to copy the same OODT distribution files to all nodes when setting up
>>    the cluster. This assumes only the *.properties* file will have node
>>    specific configuration.
>>    2. Otherwise, If I am allowed to write to */policy/** directory, I
>>    can download those files from zookeeper and make them available for each
>>    node at runtime.
>> The problems I have at the moment are,
>>    1. Whether my assumption in *suggestion 1 above* is correct?
>>    2. Are there any node specific configurations in *.properties* files
>>    of any component?
>> Can you kindly review my suggestions and help me clarify ambiguities I
>> have? Your suggestions are also welcome.
>> Thank you!
>> Kind Regards,
>> *Imesha Sudasingha*
>> Undergraduate of Department of Computer Science and  Engineering,
>> University of Moratuwa,
>> Sri Lanka.
>> <https://lk.linkedin.com/in/imeshasudasingha>  <https://github.com/IMS94>
>>   <http://stackoverflow.com/users/4012073/imesha-sudasingha>
>> <https://twitter.com/Imesha94>

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