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https://issues.apache.org/jira/browse/MNG-6418?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Scholte closed MNG-6418.
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Resolution: Duplicate
Assignee: Robert Scholte
> Parallel builds with empty local repository hang
> ------------------------------------------------
>
> Key: MNG-6418
> URL: https://issues.apache.org/jira/browse/MNG-6418
> Project: Maven
> Issue Type: Bug
> Affects Versions: 3.5.2
> Environment: Build on Windows or Linux (happens on both environments)
> Java 1.8.0_161
> Company central Maven repo is Nexus Repository Manager
> Reporter: Stefan Mueller
> Assignee: Robert Scholte
> Priority: Blocker
> Attachments: maven-3.5.2-hang-dump.txt
>
>
> Parallel builds of multi-module Projects using multiple threads (like mvn -T
> 5 clean install) usually run fine if most or all dependencies already exist
> in the local Maven repository.
> If the local Maven repository is *empty*, such builds will sporadically hang.
> The hang seems at random points but always related to downloading or
> uploading artifacts from/to a central repo (in our case a company-wide Nexus
> Repository Manager).
> Using Maven *3.2.5* there are no such issues!
> Parallel builds with an empty repository are especially important for the CI
> builds on Jenkins, as Jenkins uses a fresh new job-local repository for each
> build. This leads to most Jenkins build hang after upgrading from Maven 3.2.5
> to 3.5.2.
> See the attached thread-dump while hanging (seems to be related to
> org.eclipse.aether.connector.basic.PartialFile$LockFile)
>
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