Richard Raumberger created MNG-6117:
---------------------------------------

             Summary: ${session.parallel} not correctly set
                 Key: MNG-6117
                 URL: https://issues.apache.org/jira/browse/MNG-6117
             Project: Maven
          Issue Type: Bug
    Affects Versions: 3.3.9
            Reporter: Richard Raumberger


Running {{mvn help:evaluate -T 3}} and resolving the property  
{{session.parallel}} returns {{true}} when run with Maven 3.0.5.

When running it with 3.3.9, this property resolves to {{false}}.

{code}
mvn help:evaluate -T 3
[INFO] Scanning for projects...
[INFO]
[INFO] Using the MultiThreadedBuilder implementation with a thread count of 3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-help-plugin:2.2:evaluate (default-cli) @ standalone-pom ---
[INFO] No artifact parameter specified, using 
'org.apache.maven:standalone-pom:pom:1' as project.
[INFO] Enter the Maven expression i.e. ${project.groupId} or 0 to exit?:
${session.parallel}
[INFO]
false
{code}

E.g. Surefire 
[relies|https://github.com/apache/maven-surefire/blob/fb9b699e27dae905393a5bc4d5c6ae39606c3172/maven-surefire-common/src/main/java/org/apache/maven/plugin/surefire/AbstractSurefireMojo.java#L658]
 on this property, to check whether Maven is running in parallel mode, as 
mentioned in the comments of 
[SUREFIRE-1301|https://issues.apache.org/jira/browse/SUREFIRE-1301].



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