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From "Gareth Healy (JIRA)" <>
Subject [jira] [Commented] (MNG-5825) Command line fails if jvm.config and MAVEN_OPTS has duplicates
Date Thu, 21 May 2015 18:27:17 GMT


Gareth Healy commented on MNG-5825:

I've put together an example in bash how this could be solved. Its not 100% but a start.

> Command line fails if jvm.config and MAVEN_OPTS has duplicates
> --------------------------------------------------------------
>                 Key: MNG-5825
>                 URL:
>             Project: Maven
>          Issue Type: Improvement
>    Affects Versions: 3.3.3
>            Reporter: Gareth Healy
>            Priority: Minor
>   Original Estimate: 24h
>  Remaining Estimate: 24h
> MNG-5790 introduced jvm.config (+1) but how it currently handles MAVEN_OPTS and jvm.config
is quite simple, in that it just concats the two values together.
> The problem being, if you have:
> export MAVEN_OPTS="-Xmx1024m -XX:MaxPermSize=512m"
> jvm.config = -Xmx2048m -Xms2048m -XX:MaxPermSize=512m -Djava.awt.headless=true
> You get a JAVA issue:
> localhost:project garethah$ mvn clean install
> Error occurred during initialization of VM
> Incompatible minimum and maximum heap sizes specified
> Do to the fact that the command line has multiple options for the same JVM option.
> Can this be improved, so it takes the higher of the values?

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