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javajettymaven-2maven-jetty-plugin

How to control VM arguments for maven-jetty-plugin?

How to set VM arguments for Jetty run from maven-jetty-plugin?

For example, I need to pass -Xmx arguments to Jetty run by the mvn jetty:run command.

Solution

  • The enviroment variable MAVEN_OPTS is the answer. The string content of MAVEN_OPTS is passed to JVM (java.exe).

    • Linux: in shell type export MAVEN_OPTS=....
    • Windows: in shell (cmd.exe) type set MAVEN_OPTS=...

    For example: on Windows set MAVEN_OPTS="-Xmx1024m" sets the heap size of the Maven process to 1024mb.

    Update (01.04.2013): Pass it directly to Jetty.

    Matthew Farwell (please upvote his answer to give him credit) comes with the solution of using a forked JVM process to run Jetty which is a new feature of the Jetty plugin. This is a better solution as the former runs inside same JVM process as Maven (thus shares memory).