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https://issues.apache.org/jira/browse/SUREFIRE-1837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17320313#comment-17320313
]
Guillaume Nodet commented on SUREFIRE-1837:
-------------------------------------------
I'm working on an easy to set up locking mechanism right now. The one based on
Redis lock is fine, but requires a redis process up and running. I don't expect
much contention, and locks only originate from the local processes, so a more
simple locking mechanism is fine imho.
The idea is that the factory will try to find an existing process and use it to
send lock requests. IF the process does not exists, start one and use it. The
process is responsible for receiving incoming connections and handle the lock
requests. The server would kill itself after a few minutes if not used.
> NullPointerException at AbstractSurefireMojo$ClasspathCache.setCachedClasspath
> ------------------------------------------------------------------------------
>
> Key: SUREFIRE-1837
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1837
> Project: Maven Surefire
> Issue Type: Bug
> Components: Maven Surefire Plugin
> Affects Versions: 3.0.0-M5
> Environment: mvn --version
> Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
> Maven home: /opt/apache-maven-3.6.3
> Java version: 11.0.8, vendor: Amazon.com Inc., runtime:
> /usr/lib/jvm/java-11-amazon-corretto
> Jenkins ver. 2.204.6 on Ubuntu 18
> Reporter: Ruslan Sibgatullin
> Assignee: Tibor Digana
> Priority: Major
>
> While migrating a rather old and big project from Java 8 to Java 11 the
> following exception happens occasionally (once in 3-4 builds):
> {code:java}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test (default-test)
> on project my_project: Execution default-test of goal
> org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test failed.:
> NullPointerException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test
> (default-test) on project cachereloader-validation: Execution default-test of
> goal org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test failed.
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:215)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:156)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:148)
> at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:117)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call
> (MultiThreadedBuilder.java:190)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call
> (MultiThreadedBuilder.java:186)
> at java.util.concurrent.FutureTask.run (FutureTask.java:264)
> at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:515)
> at java.util.concurrent.FutureTask.run (FutureTask.java:264)
> at java.util.concurrent.ThreadPoolExecutor.runWorker
> (ThreadPoolExecutor.java:1128)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run
> (ThreadPoolExecutor.java:628)
> at java.lang.Thread.run (Thread.java:834)
> Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
> default-test of goal
> org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test failed.
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:148)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:210)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:156)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:148)
> at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:117)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call
> (MultiThreadedBuilder.java:190)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call
> (MultiThreadedBuilder.java:186)
> at java.util.concurrent.FutureTask.run (FutureTask.java:264)
> at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:515)
> at java.util.concurrent.FutureTask.run (FutureTask.java:264)
> at java.util.concurrent.ThreadPoolExecutor.runWorker
> (ThreadPoolExecutor.java:1128)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run
> (ThreadPoolExecutor.java:628)
> at java.lang.Thread.run (Thread.java:834)
> Caused by: java.lang.NullPointerException
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo$ClasspathCache.setCachedClasspath
> (AbstractSurefireMojo.java:4121)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo$ClasspathCache.access$200
> (AbstractSurefireMojo.java:4102)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo.newStartupConfigWithClasspath
> (AbstractSurefireMojo.java:1913)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo.createStartupConfiguration
> (AbstractSurefireMojo.java:1894)
> at org.apache.maven.plugin.surefire.AbstractSurefireMojo.createForkStarter
> (AbstractSurefireMojo.java:2374)
> at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider
> (AbstractSurefireMojo.java:1310)
> at
> org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked
> (AbstractSurefireMojo.java:1159)
> at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute
> (AbstractSurefireMojo.java:932)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:137)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:210)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:156)
> at org.apache.maven.lifecycle.internal.MojoExecutor.execute
> (MojoExecutor.java:148)
> at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
> (LifecycleModuleBuilder.java:117)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call
> (MultiThreadedBuilder.java:190)
> at
> org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call
> (MultiThreadedBuilder.java:186)
> at java.util.concurrent.FutureTask.run (FutureTask.java:264)
> at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:515)
> at java.util.concurrent.FutureTask.run (FutureTask.java:264)
> at java.util.concurrent.ThreadPoolExecutor.runWorker
> (ThreadPoolExecutor.java:1128)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run
> (ThreadPoolExecutor.java:628)
> at java.lang.Thread.run (Thread.java:834){code}
> With exactly the same setup but using Java 8 this exception doesn't occur.
> The tests run on Jenkins ver. 2.204.6 like this:
> {code:java}
> realtimeJUnit('**/target/surefire-reports/*.xml') {
> sh "mvn test -e -T 1C"
> }
> {code}
> {code:java}
> mvn --version
> Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
> Maven home: /opt/apache-maven-3.6.3
> Java version: 11.0.8, vendor: Amazon.com Inc., runtime:
> /usr/lib/jvm/java-11-amazon-corretto
> {code}
> Also, with the plugin version 2.22.2 there is no exception but also
> occasionally some random tests fail with
> {code:java}
> java.lang.NoClassDefFoundError:
> ....
> Caused by: java.lang.ClassNotFoundException:
> {code}
> even thought classes are located right next to each other (sometimes it even
> fails to find inner static class)
> Plugin configuration
> {code:java}
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-surefire-plugin</artifactId>
> <version>${surefire.version}</version>
> <configuration>
> <argLine>@{jacoco.agent.argLine} -Xmx512m -Xms256m
> ${custom.test.argLine}</argLine>
> <includes>
> <include>**/*Test.java</include>
> <include>**/*Specification.java</include>
> </includes>
> <excludes>
> <exclude>**/*IntegrationTest.java</exclude>
> </excludes>
> <forkCount>1</forkCount>
>
> <forkedProcessTimeoutInSeconds>${test.timeout}</forkedProcessTimeoutInSeconds>
> <runOrder>random</runOrder>
> <reuseForks>true</reuseForks>
> <rerunFailingTestsCount>1</rerunFailingTestsCount>
> <testFailureIgnore>true</testFailureIgnore>
> </configuration>
> </plugin>
> {code}
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