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https://issues.apache.org/jira/browse/SCM-836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15367922#comment-15367922
 ] 

Dan Tran commented on SCM-836:
------------------------------

also mavenHome should default to the same started maven via

{code}
    String mvnPath = System.getProperty("maven.home") + "/bin/mvn";
    if (Os.isFamily("windows")) {
        String winMvnPath = mvnPath + ".bat";
        if (!new File(winMvnPath).exists()) {
            winMvnPath = mvnPath + ".cmd";
        }
        mvnPath = winMvnPath;
    }
{code}

> scm:bootstrap throws NPE
> ------------------------
>
>                 Key: SCM-836
>                 URL: https://issues.apache.org/jira/browse/SCM-836
>             Project: Maven SCM
>          Issue Type: Bug
>          Components: maven-plugin
>    Affects Versions: 1.9.5
>            Reporter: Dan Tran
>
> This issue shows up at 1.9.5 with the following stack trace
> Caused by: java.lang.NullPointerException
>       at 
> org.apache.maven.scm.plugin.BootstrapMojo.runGoals(BootstrapMojo.java:123)
>       at 
> org.apache.maven.scm.plugin.BootstrapMojo.execute(BootstrapMojo.java:94)
>       at 
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
>       ... 21 more
> Looking into debug log. Looks like mavenHome is set to null which should be 
> "" instead ( ie defaultValue="" does not work??? )
> [DEBUG] Configuring mojo 
> 'org.apache.maven.plugins:maven-scm-plugin:1.9.5:bootstrap' with basic 
> configurator -->
> [DEBUG]   (f) basedir = 
> /data/jenkins-work/jobs/sit/jobs/sit-master/workspace/sit/aaa
> [DEBUG]   (s) checkoutDirectory = 
> /data/jenkins-work/jobs/sit/jobs/sit-master/workspace/sit/aaa/target/checkout
> [DEBUG]   (f) connectionType = connection
> [DEBUG]   (f) developerConnectionUrl = 
> scm:p4://IDP/shared/main/itests/restapi/aaa
> [DEBUG]   (f) goals = verify,-Dsky.sshUser=admin
> [DEBUG]   (f) profiles = aaa
> [DEBUG]   (f) pushChanges = true
> [DEBUG]   (f) settings = org.apache.maven.execution.SettingsAdapter@5b69d40d
> [DEBUG]   (f) skipCheckoutIfExists = false
> [DEBUG]   (f) useExport = false
> [DEBUG] -- end configuration --
> work around is to pass in -DmavenHome=""



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