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https://issues.apache.org/jira/browse/HDFS-17287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDFS-17287:
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Labels: pull-request-available (was: )
> Parallel Maven Build Support for Apache Hadoop
> ----------------------------------------------
>
> Key: HDFS-17287
> URL: https://issues.apache.org/jira/browse/HDFS-17287
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: build
> Affects Versions: 3.3.6
> Reporter: caijialiang
> Priority: Major
> Labels: pull-request-available
>
> The reason for the slow compilation: The Hadoop project has many modules, and
> the inability to compile them in parallel results in a slow process. For
> instance, the first compilation of Hadoop might take several hours, and even
> with local Maven dependencies, a subsequent compilation can still take close
> to 40 minutes, which is very slow.
> How to solve it: Use {{mvn dependency:tree}} and {{maven-to-plantuml}} to
> investigate the dependency issues that prevent parallel compilation.
> * Investigate the dependencies between project modules.
> * Analyze the dependencies in multi-module Maven projects.
> * Download {{{}maven-to-plantuml{}}}:
>
> {{wget
> https://github.com/phxql/maven-to-plantuml/releases/download/v1.0/maven-to-plantuml-1.0.jar}}
> * Generate a dependency tree:
>
> {{mvn dependency:tree > dep.txt}}
> * Generate a UML diagram from the dependency tree:
>
> {{java -jar maven-to-plantuml.jar --input dep.txt --output dep.puml}}
> For more information, visit: [maven-to-plantuml GitHub
> repository|https://github.com/phxql/maven-to-plantuml/tree/master].
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