231 questions
Amending the Azure DevOps Pipeline to Use Maven with Multiple Java Versions
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Diptesh Kumar
286
Reputation points
We are configuring the (AKS Linux) agent to support both Java 17 and Java 21 by setting appropriate environment variables. Specifically, we are defining the JAVA_HOME_17_X64 and JAVA_HOME_21_X64 environment variables on the agent. When using the Maven build task in an Azure DevOps pipeline, and selecting the Java version (e.g., 1.17) in the task configuration, the Maven task looks for a corresponding environment variable like JAVA_HOME_17_X64 on the agent. This allows the task to bind to the correct JDK version. If this environment variable is not correctly set or recognized, the task will fail to bind to the specified Java version and the pipeline will fail. If it is set correctly, the Maven task should use the specified Java version (e.g., Java 17) rather than the default one, and it should output the correct Java version during the build. In summary, proper configuration of these environment variables on the agent ensures that the Maven task selects and uses the correct Java version as specified in the task settings.
so that we can seamlessly swap in future.
Below is the screenshot from agent pool regarding env varibales:
I have use below pipeline :
YAMLCopy
trigger:
error from logs:
The JAVA_HOME environment variable is not defined correctly,
this environment variable is needed to run this program.
##[debug]Process exited with code 1 and signal null for tool '/AzDOAgents/apache-maven-3.8.8/bin/mvn'
##[debug]STDIO streams have closed and received exit code 1 and signal null for tool '/AzDOAgents/apache-maven-3.8.8/bin/mvn'
##[debug]task result: Failed
##[error]Build failed.
##[debug]Processed: ##vso[task.issue type=error;source=TaskInternal;correlationId=420bf39b-8b04-4080-8535-ef817feb12f2;]Build failed.
##[debug]Processed: ##vso[task.complete result=Failed;]Build failed.
##[error]Exit code 1 returned from process: file name '/azp/externals/node20_1/bin/node', arguments '"/azp/_work/_tasks/Maven_ac4ee482-65da-4485-a532-7b085873e532/4.249.6/maventask.js"'.
when we select below version above pipeline should not fail, Please suggest further , thank you for the support.
Azure DevOps
{count} votes
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Dasari Kamali 335 Reputation points Microsoft External Staff2025-04-30T05:32:59.1+00:00 Hi @Diptesh Kumar,
Make sure that the
JAVA_HOME_17_X64andJAVA_HOME_21_X64environment variables are correctly set and available to the agent at runtime. Also, add theUseJavaVersion@1task in your pipeline YAML before the Maven task to dynamically set the desired Java version.If you prefer to use environment variables directly, set
javaHomeOptiontoPathand specify the correct path usingjdkDirectorylike$(JAVA_HOME_17_X64).- task: UseJavaVersion@1 inputs: versionSpec: '17' architecture: 'x64' - task: Maven@3 inputs: mavenPomFile: 'pom.xml' javaHomeOption: 'JDKVersion' jdkVersionOption: '1.17' jdkArchitectureOption: 'x64' goals: 'clean install' -
Diptesh Kumar 286 Reputation points
2025-04-30T05:47:00.3066667+00:00 Hi
While validating your pipeline I am seeing below error
A task is missing. The pipeline references a task called 'UseJavaVersion'. This usually indicates the task isn't installed, and you may be able to install it from the Marketplace: https://marketplace.visualstudio.com. (Task version 1, job 'Job', step ''.)
it appears to be availalble in the market place, can you give me link please
-
Dasari Kamali 335 Reputation points Microsoft External Staff
2025-04-30T06:40:23.8066667+00:00 Hi @@Diptesh Kumar,
Can you share your pipeline YAML file here? -
Diptesh Kumar 286 Reputation points
2025-04-30T06:47:16.2566667+00:00 Hi Dasari,
- Here is the pipeline i am using and am seeing below error from maven run task after setting goals verify pipeline: YAMLCopy
logs: The JAVA_HOME environment variable is not defined correctly, this environment variable is needed to run this program. ##[debug]Process exited with code 1 and signal null for tool '/AzDOAgents/apache-maven-3.8.8/bin/mvn' ##[debug]STDIO streams have closed and received exit code 1 and signal null for tool '/AzDOAgents/apache-maven-3.8.8/bin/mvn' ##[debug]task result: Failed ##[error]Build failed. ##[debug]Processed: ##vso[task.issue type=error;source=TaskInternal;correlationId=b85186f2-6419-4382-becf-6d9aef9b65a0;]Build failed. ##[debug]Processed: ##vso[task.complete result=Failed;]Build failed. ##[error]Exit code 1 returned from process: file name '/azp/externals/node20_1/bin/node', arguments '"/azp/_work/_tasks/Maven_ac4ee482-65da-4485-a532-7b085873e532/4.249.6/maventask.js"'.trigger: trigger: - main pool: name: 'Auto-Scaling-Agents-Linux-PreProd' stages: - stage: ValidateJava displayName: 'Validate Java Versions' jobs: - job: ValidateJavaJob displayName: 'Validate JAVA_HOME for Java 17 and Java 21' steps: - script: | echo "### Setting JAVA_HOME for Java 17 ###" export JAVA_HOME=$(JAVA_HOME_17_X64) export PATH=$JAVA_HOME/bin:$PATH echo "JAVA_HOME is set to: $JAVA_HOME" java -version displayName: 'Validate Java 17 using JAVA_HOME' - task: Maven@4 inputs: mavenPomFile: 'pom.xml' publishJUnitResults: false javaHomeOption: 'JDKVersion' jdkVersionOption: '1.17' # Binds to JAVA_HOME_17_X64 mavenVersionOption: 'Default' mavenAuthenticateFeed: false effectivePomSkip: false sonarQubeRunAnalysis: false displayName: 'Run Maven with Java 17' - script: | echo "### Setting JAVA_HOME for Java 21 ###" export JAVA_HOME=$(JAVA_HOME_21_X64) export PATH=$JAVA_HOME/bin:$PATH echo "JAVA_HOME is set to: $JAVA_HOME" java -version displayName: 'Validate Java 21 using JAVA_HOME' - task: Maven@4 inputs: mavenPomFile: 'pom.xml' goals: 'verify' publishJUnitResults: false javaHomeOption: 'JDKVersion' jdkVersionOption: '1.17' mavenVersionOption: 'Default' mavenAuthenticateFeed: false effectivePomSkip: false sonarQubeRunAnalysis: false displayName: 'Run Maven with Java 17' trigger:
and below is the docker file used by above agent:
- Here is the pipeline i am using and am seeing below error from maven run task after setting goals verify pipeline: YAMLCopy
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