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https://issues.apache.org/jira/browse/HADOOP-15190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341510#comment-16341510
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Duo Xu commented on HADOOP-15190:
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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 outdated.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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