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From GitBox <...@apache.org>
Subject [GitHub] elek opened a new pull request #490: HDDS-1113. Remove default dependencies from hadoop-ozone project
Date Fri, 15 Feb 2019 12:52:37 GMT
elek opened a new pull request #490: HDDS-1113. Remove default dependencies from hadoop-ozone
project
URL: https://github.com/apache/hadoop/pull/490
 
 
   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. 
   
   See: https://issues.apache.org/jira/browse/HDDS-1113

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