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From Mike Walch <mwa...@apache.org>
Subject [DISCUSS] Separate deployment code from Fluo distribution tarball
Date Tue, 12 Jul 2016 15:59:44 GMT
The Fluo distribution tarball currently contains code that allows users to
start Fluo applications in YARN using Twill.  While deploying to YARN has
worked well, Fluo should not be tied to a single cluster resource manager.
For example, users could have problems deploying their Fluo application to
YARN with our current setup as Twill brings in dependencies that can
conflict with the user-provided dependencies in their Fluo application.

In order to give users deployment options, we should remove any deployment
code from our tarball.  We should start releasing a simpler tarball that
contains only the necessary jars and commands to configure a Fluo
application (in Zookeeper) and start the processes of a Fluo application
locally.  It looks Kafka Streams is already taking this approach.  Read the
section 'Docker, Mesos, and Kubernetes, Oh My!' in the blog post below:


If we also took this the approach, the commands and structure of the
tarball would need to follow SEMVER as users and downstream projects would
depend on them.  Users could then either script deployments using Chef,
Ansible, Salt, etc. or use downstream projects created to make it easy to
deploy Fluo applications to YARN, Mesos, Kubernetes, etc.  We could
initially create and maintain some these downstream projects.  However,
they could innovate/survive based on community interset.

After we release 1.0.0, I would like to start working in this direction for
Fluo. I am interested to see if anyone has any views to share on this topic.

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