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From "Michael Osipov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MNG-6474) Maven intermittently hanging at end of multithreaded build
Date Wed, 12 Sep 2018 09:31:00 GMT

    [ https://issues.apache.org/jira/browse/MNG-6474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16611821#comment-16611821
] 

Michael Osipov commented on MNG-6474:
-------------------------------------

That's better, yes. Can you also provide the rest. Otherwise this is needle in the haystack.

> Maven intermittently hanging at end of multithreaded build
> ----------------------------------------------------------
>
>                 Key: MNG-6474
>                 URL: https://issues.apache.org/jira/browse/MNG-6474
>             Project: Maven
>          Issue Type: Bug
>    Affects Versions: 3.5.2
>            Reporter: Beirtí Ó'Nunáin
>            Priority: Major
>         Attachments: thread dump.txt
>
>
> I can't reproduce this with a small skeleton project. It has only started happening since
we upgraded from 3.3 to 3.5.
>  
> I have a multithreaded multi-module build which builds a number of large (300mb+) artifacts
upon SVN commits. I'm running the following goals:
>  
> mvn clean deploy -T 1C
>  
> Reasonably often, perhaps 1 in 10 builds, the build hangs just before where I'd expect
the build to have finished. I'm guessing that maven is attempting to install an artifact to
the local repository (looking at the stack trace) while the build is about to complete as
when I compare the build log from the hung build to a successful build, the following line
is the "Reactor Summary"
> This issue happens both on my local machine  and on our TeamCity server (Both multi-processor,
multi-core 14 vs 32 cores)
> The Thread dump isn't indicating any kind of DeadLock. Our sysadmins have checked the
box for any antivirus scanning which may be impacting the file copy indicated in the log but
can't see anything going on at that time.
> Full thread dump from TeamCity attached
>  



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