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From "Duo Xu (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HADOOP-15190) Use Jacoco to generate Unit Test coverage reports
Date Fri, 26 Jan 2018 19:53:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341510#comment-16341510
] 

Duo Xu edited comment on HADOOP-15190 at 1/26/18 7:52 PM:
----------------------------------------------------------

I think Yetus also supports Jacoco? Apache HBase is using Jacoco AFAIK.

My patch will also generate report/xml for each sub module, so this should not be a problem.

hadoop-coverage folder is only used for aggregated reports since Jacoco does not have a direct
way to produce an aggregated multi-module report.

I am also open to use either tool. I initially proposed using Jacoco as it is more widely
used in Java world. In other build systems like VSTS, it only supports [cobertura and Jacoco|https://docs.microsoft.com/en-us/vsts/build-release/tasks/test/publish-code-coverage-results]. 

We can compare and see which one is better for Hadoop :)


was (Author: onpduo):
I think Yetus also supports Jacoco? Apache HBase is using Jacoco AFAIK.

My patch will also generate report/xml for each sub module, so this should not be a problem.

hadoop-coverage folder is only used for aggregated reports since Jacoco does not have a direct
way to produce an aggregated multi-module report.

I am also open to use either tool. I initially proposed using Jacoco as it is more widely
used in Java world. In other build systems like VSTS, it only supports [cobertura and Jacoco|[https://docs.microsoft.com/en-us/vsts/build-release/tasks/test/publish-code-coverage-results].]

We can compare and see which one is better for Hadoop :)

> Use Jacoco to generate Unit Test coverage reports
> -------------------------------------------------
>
>                 Key: HADOOP-15190
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15190
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build
>            Reporter: Duo Xu
>            Assignee: Duo Xu
>            Priority: Minor
>         Attachments: HADOOP-15190.01.patch, jacoco_report_2018_01_25.JPG
>
>
> Currently Hadoop is using maven-clover2-plugin for code coverage, which is outdated.
And Atlassian open-sourced clover last year so license cannot be purchased although we can
switch to use the license-free version called "openclover".
> This Jira is to replace clover with Jacoco, which is actively maintained by the community.
>   



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