java - Maven Build 在 Surefire 测试之间挂起

Question

由于没有明显的原因，并且没有对代码进行任何相关更改，我的数据库 surefire 测试在特定测试后挂起。控制台输出表明测试 50 成功完成，测试 51 尚未开始

[INFO] Running xxxx.server.db.dao.Test50
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.954 s - in xxxx.server.db.dao.Test50

我运行了以下命令来检索下面的线程转储

mvndebug -DforkCount=0 clean install

以下也不起作用，并在测试运行的同一点导致相同的行为

mvn clean install

测试正在 Windows 10 上运行，MySQL 5.7 服务器使用 maven 3.3.9。我试过使用不同版本的 maven 但没有成功。此外，我尝试了不同版本的 surefire 插件和不同的 fork 设置，下面是唯一可行的组合

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.21.0</version>
            <configuration>
                <forkMode>always</forkMode>
                <forkCount>1</forkCount>
                <reuseForks>true</reuseForks>
                <threadCount>1</threadCount>
                <parallel>suites</parallel>
            </configuration>
        </plugin>

挂起时的thread dump状态如下:

    "main@1" prio=5 tid=0x1 nid=NA waiting
    java.lang.Thread.State: WAITING
    at sun.misc.Unsafe.park(Unsafe.java:-1)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429)
    at java.util.concurrent.FutureTask.get(FutureTask.java:191)
    at org.apache.maven.plugin.surefire.booterclient.ForkStarter.awaitResultsDone(ForkStarter.java:460)
    at org.apache.maven.plugin.surefire.booterclient.ForkStarter.runSuitesForkPerTestSet(ForkStarter.java:441)
    at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:293)
    at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:245)
    at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:1149)
    at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:978)
    at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:854)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)


    "Thread-17@5301" daemon prio=5 tid=0x37 nid=NA runnable
    java.lang.Thread.State: RUNNABLE
    at java.io.FileInputStream.readBytes(FileInputStream.java:-1)
    at java.io.FileInputStream.read(FileInputStream.java:255)
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
    - locked <0x14bb> (a java.io.BufferedInputStream)
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
    - locked <0x14bc> (a java.io.InputStreamReader)
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
    at java.io.BufferedReader.fill(BufferedReader.java:161)
    at java.io.BufferedReader.readLine(BufferedReader.java:324)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at org.apache.maven.surefire.shade.org.apache.maven.shared.utils.cli.StreamPumper.run(StreamPumper.java:76)

    "Thread-17@5301" daemon prio=5 tid=0x37 nid=NA runnable
    java.lang.Thread.State: RUNNABLE
    at java.io.FileInputStream.readBytes(FileInputStream.java:-1)
    at java.io.FileInputStream.read(FileInputStream.java:255)
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
    - locked <0x14bb> (a java.io.BufferedInputStream)
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
    - locked <0x14bc> (a java.io.InputStreamReader)
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
    at java.io.BufferedReader.fill(BufferedReader.java:161)
    at java.io.BufferedReader.readLine(BufferedReader.java:324)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at org.apache.maven.surefire.shade.org.apache.maven.shared.utils.cli.StreamPumper.run(StreamPumper.java:76)


    "Thread-18@5300" daemon prio=5 tid=0x38 nid=NA runnable
    java.lang.Thread.State: RUNNABLE
    at java.io.FileInputStream.readBytes(FileInputStream.java:-1)
    at java.io.FileInputStream.read(FileInputStream.java:255)
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
    - locked <0x14ba> (a java.io.InputStreamReader)
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
    at java.io.BufferedReader.fill(BufferedReader.java:161)
    at java.io.BufferedReader.readLine(BufferedReader.java:324)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at org.apache.maven.surefire.shade.org.apache.maven.shared.utils.cli.StreamPumper.run(StreamPumper.java:76)

    "Thread-16@5299" daemon prio=5 tid=0x36 nid=NA waiting
    java.lang.Thread.State: WAITING
    at sun.misc.Unsafe.park(Unsafe.java:-1)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
    at java.util.concurrent.Semaphore.acquire(Semaphore.java:312)
    at org.apache.maven.plugin.surefire.booterclient.lazytestprovider.TestLessInputStream.awaitNextCommand(TestLessInputStream.java:165)
    at org.apache.maven.plugin.surefire.booterclient.lazytestprovider.TestLessInputStream.beforeNextCommand(TestLessInputStream.java:136)
    at org.apache.maven.plugin.surefire.booterclient.lazytestprovider.AbstractCommandStream.read(AbstractCommandStream.java:100)
    at org.apache.maven.surefire.shade.org.apache.maven.shared.utils.cli.StreamFeeder.feed(StreamFeeder.java:123)
    at org.apache.maven.surefire.shade.org.apache.maven.shared.utils.cli.StreamFeeder.run(StreamFeeder.java:60)


    "ping-timer-10s@5111" daemon prio=5 tid=0x19 nid=NA waiting
    java.lang.Thread.State: WAITING
    at sun.misc.Unsafe.park(Unsafe.java:-1)
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)


    "timeout-check-timer@5108" daemon prio=5 tid=0x18 nid=NA waiting
    java.lang.Thread.State: WAITING
    at sun.misc.Unsafe.park(Unsafe.java:-1)
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
    at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

所有 5 个 Resolver 守护进程都处于相同状态

    "resolver-5@5058" daemon prio=5 tid=0x17 nid=NA waiting
    java.lang.Thread.State: WAITING
    at sun.misc.Unsafe.park(Unsafe.java:-1)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

    "ThreadedStreamConsumer@5298" daemon prio=5 tid=0x34 nid=NA waiting
    java.lang.Thread.State: WAITING
    at sun.misc.Unsafe.park(Unsafe.java:-1)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)
    at org.apache.maven.plugin.surefire.booterclient.output.ThreadedStreamConsumer$Pumper.run(ThreadedStreamConsumer.java:83)
    at java.lang.Thread.run(Thread.java:748)

它总是在测试运行中卡在同一个地方。我试过在数据库上检查和设置最大连接数。此时只有 3 个连接处于 Activity 状态，限制为 151。MySql 中的线程设置最大为 64。

test50 的所有应用程序数据库连接都在最后的 try block 中关闭。

禁用 test50 会导致相同的结果。我不知道接下来要运行哪个测试。

当然有一些我想念的东西。有什么想法吗？

Answer 1

最后的问题是环境变量设置。我的 Windows 机器上的 PATH 包括 C:\ProgramData\Oracle\javapath，它是指向 C:\ProgramData\Oracle\Java\javapath 的链接。 JAVA_HOME 变量设置为我在程序文件下安装的 Java。

C:\ProgramData\Oracle\Java\javapath 只包含以前版本的 3 个文件(java.exe、javaw.exe 和 javaws.exe)。

当我将路径更改为 JAVA_HOME 的 bin 目录时，之后一切正常。