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From "Misho Krastev" <misho...@gmail.com>
Subject Re: Review Request 23666: REST service for aurora client commands, built with Tornado Web framework
Date Mon, 28 Jul 2014 07:27:55 GMT


> On July 22, 2014, 12:54 a.m., Bill Farner wrote:
> > Do you think this should be obviated by https://reviews.apache.org/r/23741/ ?

This looks like elegant (declarative) solution to export REST variant of the native thrift
interface. I am not familiar with the Aurora scheduler code so I can not read very well the
diffs. From the review request description and what I understand from the diffs, I would vote
for that (your) solution.

However, I don't think this REST service can be replaced by the other one. The reason is the
REST service that I submitted for review is an interface to the capabilities provided by the
Aurora client, and this client is functionality-rich. It adds more features on top of those
offered by the scheduler. In particular, what we needed was the ability to do rolling upgrades
where instances (shards) are upgraded in batches and not en bloc. There are other examples
but this is the one that is of great importance to us.


- Misho


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On July 21, 2014, 10:58 p.m., Misho Krastev wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/23666/
> -----------------------------------------------------------
> 
> (Updated July 21, 2014, 10:58 p.m.)
> 
> 
> Review request for Aurora.
> 
> 
> Repository: aurora
> 
> 
> Description
> -------
> 
> REST service for aurora client commands, built using Tornado Web framework
> 
> This is a draft implementation of a REST server exposing APIs to call Aurora client commands.
It is a wrapper around the aurora command-line client and aurora client code. It implements
some but not all of the commands available with the aurora command-line client. Comments on
the code as well suggestions for improvements and enhancements are requested.
> 
> This work is a eBay project that we would like to contribute to the Aurora project.
> 
> Note: development is still ongoing to add unittests and to resolve the issues discovered
with the stress tests.
> Note(2): GitHub repo -- https://github.com/misho-kr/incubator-aurora
> 
> 
> Diffs
> -----
> 
>   3rdparty/python/BUILD 641d610deb58fd102ec584e3deaa388b51a6f221 
>   docs/client-rest-api.md PRE-CREATION 
>   src/main/python/apache/aurora/client/bin/BUILD 43d747956df0611b0880f64df9955d5f5806901c

>   src/main/python/apache/aurora/client/bin/aurora_rest.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/BUILD PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/application.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/application_async.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/coroutine_executor.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/external_executor.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/internal_executor.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/mp_executor.py PRE-CREATION 
>   src/main/python/apache/aurora/client/rest/mt_executor.py PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/23666/diff/
> 
> 
> Testing
> -------
> 
> Stress testing with Locust to verify the REST service can handle multiple requests simultaneously.
Not all of them passed, particularly the ones with the internal executor that calls Aurora
client api.
> 
> 
> Thanks,
> 
> Misho Krastev
> 
>


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