[HDDS-1113] Remove default dependencies from hadoop-ozone project

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.4.0
• Component/s: build
• Labels: pull-request-available
• Target Version/s: 0.4.0
• Sprint: HDDS BadLands
• Assignee: Marton Elek
• Reporter: Marton Elek
• Created: 15/Feb/19 08:57
• Updated: 07/Mar/19 14:32
• Resolved: 06/Mar/19 20:04

Description

There are two ways to define common dependencies with maven:

1.) put all the dependencies to the parent project and inherit them
2.) get all the dependencies via transitive dependencies

TLDR; I would like to switch from 1 to 2 in hadoop-ozone

My main problem with the first approach that all the child project get a lot of dependencies independent if they need them or not. Let's imagine that I would like to create a new project (for example a java csi implementation) It doesn't need ozone-client, ozone-common etc, in fact it conflicts with ozone-client. But these jars are always added as of now.

Using transitive dependencies is more safe: we can add the dependencies where we need them and all of the other dependent projects will use them.

Issue Links

• links to: GitHub Pull Request #490