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https://issues.apache.org/jira/browse/MWRAPPER-91?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17816123#comment-17816123
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Benjamin Marwell commented on MWRAPPER-91:
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[~ahus1] do you, by chance, know which scripts are affected? We have multiple
wrappers, the "most modern" option at the moment being only-mvnw,
See the "without binary" section here:
https://maven.apache.org/wrapper/index.html
> Concurrent execution of mvnw to download wrapper fails
> ------------------------------------------------------
>
> Key: MWRAPPER-91
> URL: https://issues.apache.org/jira/browse/MWRAPPER-91
> Project: Maven Wrapper
> Issue Type: Bug
> Components: Maven Wrapper Scripts
> Affects Versions: 3.1.0
> Reporter: Alexander Schwartz
> Assignee: Benjamin Marwell
> Priority: Major
>
> The script will download the executable maven wrapper JAR file directly to
> the final file name.
> When multiple calls do this concurrently, it happens that the first call
> executes the JAR file that is currently overwritten by the second parallel
> call.
> This leads to error like:
> * {{NoClassDefFoundError: org/codehaus/plexus/PlexusContainer}}
> * {{ClassNotFoundException: org.apache.maven.wrapper.MavenWrapperMain}}
> A different solution might be to first download the JAR file to a temporary
> file, and then use an atomic file operator like a rename one the download is
> complete.
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