Awaiting process completion

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1

Hello, I am running a basic Jenkins pipeline, my code is:

pipeline {
        agent {
            label 'built-in'
        }

    stages {
        stage('Hello') {
            steps {
                script{
                bat """
                echo 'Hello World'
                nvm use 20.9.0
                """
                }
                
            }
        }
    }
}

When checking Thread Dump the following appears

Thread #6
	at DSL.bat(awaiting process completion in E:\workspace\Amazonas\Test_Banco\Banca_Virtual_Personas\prueba_nvm@tmp\durable-fb154151; recurrence period: 15000ms; check task scheduled; cancelled? false done? false)
	at WorkflowScript.run(WorkflowScript:10)
	at DSL.script(Native Method)
	at WorkflowScript.run(WorkflowScript:9)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.delegateAndExecute(ModelInterpreter.groovy:138)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.executeSingleStage(ModelInterpreter.groovy:673)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.catchRequiredContextForNode(ModelInterpreter.groovy:402)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.catchRequiredContextForNode(ModelInterpreter.groovy:400)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.executeSingleStage(ModelInterpreter.groovy:672)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:294)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.toolsBlock(ModelInterpreter.groovy:551)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.toolsBlock(ModelInterpreter.groovy:550)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:282)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:450)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:449)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:281)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withCredentialsBlock(ModelInterpreter.groovy:488)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withCredentialsBlock(ModelInterpreter.groovy:487)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:280)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:593)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:592)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:278)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.stageInput(ModelInterpreter.groovy:362)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.stageInput(ModelInterpreter.groovy:361)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:267)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(ModelInterpreter.groovy:625)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(ModelInterpreter.groovy:624)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:265)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:450)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:449)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:260)
	at DSL.stage(Native Method)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:246)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateSequentialStages(ModelInterpreter.groovy:173)
	at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.each(CpsDefaultGroovyMethods:2125)
	at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.each(CpsDefaultGroovyMethods:2110)
	at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.each(CpsDefaultGroovyMethods:2151)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateSequentialStages(ModelInterpreter.groovy:158)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:85)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.toolsBlock(ModelInterpreter.groovy:551)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.toolsBlock(ModelInterpreter.groovy:550)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:84)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(ModelInterpreter.groovy:625)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(ModelInterpreter.groovy:624)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:80)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:450)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:449)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:79)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withCredentialsBlock(ModelInterpreter.groovy:488)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withCredentialsBlock(ModelInterpreter.groovy:487)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:78)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:602)
	at org.jenkinsci.plugins.pipeline.modeldefinition.agent.CheckoutScript.checkoutAndRun(CheckoutScript.groovy:64)
	at org.jenkinsci.plugins.pipeline.modeldefinition.agent.CheckoutScript.doCheckout(CheckoutScript.groovy:40)
	at org.jenkinsci.plugins.pipeline.modeldefinition.agent.impl.LabelScript.run(LabelScript.groovy:43)
	at DSL.node(running on )
	at org.jenkinsci.plugins.pipeline.modeldefinition.agent.impl.LabelScript.run(LabelScript.groovy:42)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:601)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:77)
	at WorkflowScript.run(WorkflowScript:1)

This only happens when running nvm use 20.9.0, the version of Jenkins I am using is 2.462.3.
Please, I need your help. I’ve been trying to solve this problem for weeks and I haven’t been able to.

2

I do not have much experience with Windows hosts, but can you try to remove the script { } block?
AFAIK this is unnecessary since you are not calling any groovy code here, just plain steps.

If you get a shell prompt on the same host as the jenkins user are you able to call nvm use 20.9.0. It is possible that there is a security tool that capture this and launches an admin prompt and blocks the call.

The DSL.BAT output you see is a little sidecar bat script that is there to detect if your process is running as expected, there is a similar shell script called for Unix systems such as Linux hosts.

The script { } blocks are only required when you want to make groovy calls such as assigning values to groovy variable that you can then manipulate, or do a for loop, etc… These blocks are using more resources on the controller and do change the behavior of things, so you only want to use that only when absolutely necessary.