Like Rafal said it's because fedora doesn't come with a lot of the java packages pre-installed. 
Also because yum/dnf is quite different in managing dependencies from most of the modern programming languages (java, python, javascript etc). 

/rant
Modern programming languages allows much finer grain control of those dependencies (e.g. maven for java, pip for python, npm for javascript). You can pick and choose what you want at what version etc. With yum/dnf, if you need package A, and A needs B. Even though you don't require B, it still pulls it for you. To make it worse, a lot of the java library packages bundles multiple jars (the smallest library artifact java build tools uses). This means even if you just need one jar in your actual build, you have to install the whole rpm that comes with more than you need. RPM subpackaging will help but AFAIK a lot of the packagers don't care or won't bother doing that. Not to mention you have no/very little control of what version of the library you are getting from yum... 
/rant

That's the challenge we face. Will switching to another language help? Depending on the project. I have seen other tool written in python or ruby asking you to use pip/gem instead of yum/dnf due to the very same reason. 0install or use a docker container will help to reduce downloading unnecessary packages and will guarantee to work (exact version of the libraries we build and tested).

Regards,
Patrick

On Wed, May 10, 2017 at 12:33 PM, Brian Exelbierd <bex@pobox.com> wrote:



On Wed, May 10, 2017, at 01:12 AM, Carlos Munoz wrote:
Hi Rafal,

The reasoning behind writing the client in Java was made in part because it allowed the team to re-use code from the server development. We also had much more Java experience than python so we would move much faster.

We actually don't have that many Java dependencies for the client, but Fedora does make it so that a lot of unnecessary ones are pulled when installing the package.

It'd be great if you all would help the packagers get this straightened out so that the unnecessary dependencies were not included. This would benefit anyone using a Java stack.

Regards,

Bex



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Patrick Huang
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