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From Grant Henke <ghe...@cloudera.com>
Subject Re: Zookeeper use cases with Kafka
Date Tue, 18 Aug 2015 13:33:07 GMT
Hi Prabcs,

Much of that information can be found in the documentation and on the wiki.
The remaining can be found in the code. Any improvements to the
documentation is not only welcome but encouraged. Below are a few links to
get you started:

Documentation (See "Zookeeper Directories"):
http://kafka.apache.org/documentation.html#distributionimpl
Wiki:
https://cwiki.apache.org/confluence/display/KAFKA/Kafka+data+structures+in+Zookeeper

I also recommended that contribution oriented emails be sent to
the  Kafka development email list: dev@kafka.apache.org

Thank you,
Grant

On Tue, Aug 18, 2015 at 8:03 AM, Prabhjot Bharaj <prabhbharaj@gmail.com>
wrote:

> Hello Folks,
>
> I wish to contribute to Kafka internals. And, one of the things which can
> help me do that is understanding how kafka uses zookeeper. I have some of
> these basic doubts:-
>
> 1. Is zookeeper primarily used for locking ? If yes, in what cases and what
> kind of nodes does it use - sequential/ephemeral?
>
> 2. Does kafka use zookeeper watches for any of functions ?
>
> 3. What kind of state is stored in Zookeeper ? (I believe it has to be the
> leader information per partition, but is there anything apart from it?)
> What is the scale of data that is stored in Zookeeper ?
>
> Looking forward for your help.
>
> Thanks,
> prabcs
>



-- 
Grant Henke
Software Engineer | Cloudera
grant@cloudera.com | twitter.com/gchenke | linkedin.com/in/granthenke

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