Override Surefire configuration through command line

Question

I think this is a simple problem for a Java DevOps. I have problems with the Surefire parameter which sets the number of test execution threads.

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <configuration>
      <forkCount>2.5C</forkCount>
      <reuseForks>false</reuseForks>
    </configuration>
  </plugin>

I wish I could specify an override from the command line to set it to 1.

ist kind of Java related Devops so Java experts might not even know. — Antoniossss
– Antoniossss, Commented Sep 19, 2019 at 10:58
In short - it it is possible to specify it in <configuration> that the same can be set via CLI. Check configuration options then. — Antoniossss
– Antoniossss, Commented Sep 19, 2019 at 11:00
if it is possible configuration way, you can do the same from CLI. — Antoniossss
– Antoniossss, Commented Sep 20, 2019 at 13:57
I encountered issue with CPU usage at 100% when running Maven package for a project. In the POM, forkCount of 4 was specified for the surefire plugin. No matter what command line options I passed, it was always launching 4 JVM processes and CPU usage reached 100%. I didn't find any way to accomplish this. — Manohar Bhat
– Manohar Bhat, Commented Dec 22, 2023 at 11:36

Gerold Broser · Accepted Answer · 2019-09-20 06:41:16Z

4

You can find the goals of a plugin at the Goals page of every Maven plugin. If you select a specific goal there you see the goal's parameters and for the surefire:test goal there is:

<forkCount> ... User property is: [What a surprise! ;] forkCount

Hence:

mvn ... -DforkCount=1 ...

edited Sep 20, 2019 at 6:41

answered Sep 19, 2019 at 22:34

Gerold Broser

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