Github user njayaram2 commented on the issue: https://github.com/apache/incubator-madlib/pull/80 This is a great start! I will provide some github-specific feedback here, and more knn-specific comments in the code. Git can be daunting to use at first, but it's great once you get a hang of it. I would recommend you go through the following wonderful book if you have not already done so: https://git-scm.com/book/en/v2 When you work on a feature/bug, it is best if you create a branch locally and make all changes for that feature there. You can then push that branch into your github repo and open a pull request. This way you won't mess with your local master branch, which should ideally be in sync with the origin's (apache/incubator-madlib in this case) master branch. More information on how to work with branches can be found in the following chapter: https://git-scm.com/book/en/v2/Git-Branching-Branches-in-a-Nutshell (especially section 3.5) One other minor feedback is to try including the corresponding JIRA id with the commit message. The JIRA associated with this feature is: https://issues.apache.org/jira/browse/MADLIB-927
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