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https://issues.apache.org/jira/browse/HADOOP-15190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341538#comment-16341538
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Allen Wittenauer commented on HADOOP-15190:
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bq. Yetus also supports Jacoco? Apache HBase is using Jacoco AFAIK.
Nope. Yetus currently doesn't (directly) support any code coverage tools.
HBase might have added their own Yetus code to support it though.
bq. hadoop-coverage folder is only used for aggregated reports since Jacoco
does not have a direct way to produce an aggregated multi-module report.
That seems like a pretty big (and surprising!) negative. The maven modules are
rarely updated (again: not press release work) and I'd be concerned about stuff
falling though the cracks.
> 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 outdated.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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