堆栈内存溢出
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maven 在项目构建期间挂起约 20 分钟（过去工作正常）

[英]maven hangs for ~20 mins during the project build (used to work fine)

 原文  2017-05-04 20:42:13  0   3    java/ maven

问题描述

Building this maven project used to work just fine for quite a while (6 month), but today while executing mvn clean install the build start hanging every single time (tried with different versions of mvn including the latest 3.5.0 and against both openJDK & Oracle JDK - result is the same)构建这个 maven 项目过去可以正常工作一段时间（6 个月），但今天在执行mvn clean install ，构建每次都开始挂起（尝试使用不同版本的 mvn，包括最新的 3.5.0 和针对 openJDK 和Oracle JDK - 结果相同）

kill -3 PID output kill -3 PID输出

"resolver-5" #491 daemon prio=5 os_prio=0 tid=0x00007f6da8bd3800 nid=0x16b3 waiting on condition [0x00007f6d68df3000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c658c4a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"resolver-4" #490 daemon prio=5 os_prio=0 tid=0x00007f6da8bd2800 nid=0x16b2 waiting on condition [0x00007f6d69945000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c658c4a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"resolver-3" #489 daemon prio=5 os_prio=0 tid=0x00007f6da8bd9000 nid=0x16b1 waiting on condition [0x00007f6de97bc000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c658c4a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"resolver-2" #488 daemon prio=5 os_prio=0 tid=0x00007f6da8bd8800 nid=0x16b0 waiting on condition [0x00007f6de940e000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c658c4a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"resolver-1" #487 daemon prio=5 os_prio=0 tid=0x00007f6da8bd7800 nid=0x16af waiting on condition [0x00007f6de930d000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c658c4a8> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"Thread-14" #34 daemon prio=5 os_prio=0 tid=0x00007f6d9c0e7800 nid=0x73cd in Object.wait() [0x00007f6de99f7000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at org.apache.tools.ant.taskdefs.StreamPumper.waitForInput(StreamPumper.java:245)
    - locked <0x00000006cbe26170> (a org.apache.tools.ant.taskdefs.StreamPumper)
    at org.apache.tools.ant.taskdefs.StreamPumper.run(StreamPumper.java:125)
    at java.lang.Thread.run(Thread.java:745)

"Thread-13" #33 daemon prio=5 os_prio=0 tid=0x00007f6d9c10a800 nid=0x73cb in Object.wait() [0x00007f6de9af8000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at org.apache.tools.ant.taskdefs.StreamPumper.waitForInput(StreamPumper.java:245)
    - locked <0x00000006cbe4a7d8> (a org.apache.tools.ant.taskdefs.StreamPumper)
    at org.apache.tools.ant.taskdefs.StreamPumper.run(StreamPumper.java:125)
    at java.lang.Thread.run(Thread.java:745)

"BuilderThread 3" #19 prio=5 os_prio=0 tid=0x00007f6e00927800 nid=0x7373 waiting on condition [0x00007f6dea27d000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c6284f48> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"BuilderThread 2" #18 prio=5 os_prio=0 tid=0x00007f6e00926800 nid=0x7372 in Object.wait() [0x00007f6dea49b000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x00000006cb6c4780> (a java.lang.UNIXProcess)
    at java.lang.Object.wait(Object.java:502)
    at java.lang.UNIXProcess.waitFor(UNIXProcess.java:395)
    - locked <0x00000006cb6c4780> (a java.lang.UNIXProcess)
    at org.apache.tools.ant.taskdefs.Execute.waitFor(Execute.java:534)
    at org.apache.tools.ant.taskdefs.Execute.execute(Execute.java:463)
    at org.apache.tools.ant.taskdefs.ExecTask.runExecute(ExecTask.java:628)
    at org.apache.tools.ant.taskdefs.ExecTask.runExec(ExecTask.java:669)
    at org.apache.tools.ant.taskdefs.ExecTask.execute(ExecTask.java:495)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    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.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:435)
    at org.apache.tools.ant.Target.performTasks(Target.java:456)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1364)
    at org.apache.maven.plugin.antrun.AntRunMojo.execute(AntRunMojo.java:313)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:200)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:196)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"BuilderThread 1" #17 prio=5 os_prio=0 tid=0x00007f6e00926000 nid=0x7371 waiting on condition [0x00007f6dea39b000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c6284f48> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"process reaper" #12 daemon prio=10 os_prio=0 tid=0x00007f6db02a8800 nid=0x7369 runnable [0x00007f6dea4d5000]
   java.lang.Thread.State: RUNNABLE
    at java.lang.UNIXProcess.waitForProcessExit(Native Method)
    at java.lang.UNIXProcess.lambda$initStreams$3(UNIXProcess.java:289)
    at java.lang.UNIXProcess$$Lambda$7/747506922.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"BuilderThread 0" #10 prio=5 os_prio=0 tid=0x00007f6e008d4800 nid=0x7367 waiting on condition [0x00007f6dea803000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c6284f48> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

"Service Thread" #8 daemon prio=9 os_prio=0 tid=0x00007f6e000c2800 nid=0x7355 runnable [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"C1 CompilerThread2" #7 daemon prio=9 os_prio=0 tid=0x00007f6e000b3000 nid=0x7354 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" #6 daemon prio=9 os_prio=0 tid=0x00007f6e000b1800 nid=0x7353 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" #5 daemon prio=9 os_prio=0 tid=0x00007f6e000ae800 nid=0x7352 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" #4 daemon prio=9 os_prio=0 tid=0x00007f6e000ac800 nid=0x7351 waiting on condition [0x0000000000000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" #3 daemon prio=8 os_prio=0 tid=0x00007f6e00084000 nid=0x7350 in Object.wait() [0x00007f6df05f4000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
    - locked <0x00000006c231e5c8> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)

"Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x00007f6e0007f800 nid=0x734f in Object.wait() [0x00007f6df06f5000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at java.lang.Object.wait(Object.java:502)
    at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
    - locked <0x00000006c2dd4ae0> (a java.lang.ref.Reference$Lock)
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)

"main" #1 prio=5 os_prio=0 tid=0x00007f6e0000a800 nid=0x7349 waiting on condition [0x00007f6e0a5e2000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006c6280d98> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
    at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
    at java.util.concurrent.ExecutorCompletionService.take(ExecutorCompletionService.java:193)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder.multiThreadedProjectTaskSegmentBuild(MultiThreadedBuilder.java:140)
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder.build(MultiThreadedBuilder.java:101)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:993)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:345)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:191)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    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)

"VM Thread" os_prio=0 tid=0x00007f6e00077800 nid=0x734e runnable 

"GC task thread#0 (ParallelGC)" os_prio=0 tid=0x00007f6e0001f800 nid=0x734a runnable 

"GC task thread#1 (ParallelGC)" os_prio=0 tid=0x00007f6e00021000 nid=0x734b runnable 

"GC task thread#2 (ParallelGC)" os_prio=0 tid=0x00007f6e00023000 nid=0x734c runnable 

"GC task thread#3 (ParallelGC)" os_prio=0 tid=0x00007f6e00024800 nid=0x734d runnable 

"VM Periodic Task Thread" os_prio=0 tid=0x00007f6e000c5000 nid=0x7356 waiting on condition 

JNI global references: 280

Heap
 PSYoungGen      total 1161728K, used 704160K [0x000000076ab00000, 0x00000007c0000000, 0x00000007c0000000)
  eden space 979968K, 53% used [0x000000076ab00000,0x000000078a929980,0x00000007a6800000)
  from space 181760K, 99% used [0x00000007b4e80000,0x00000007bfffe8f0,0x00000007c0000000)
  to   space 208896K, 0% used [0x00000007a6800000,0x00000007a6800000,0x00000007b3400000)
 ParOldGen       total 1211904K, used 320544K [0x00000006c0000000, 0x0000000709f80000, 0x000000076ab00000)
  object space 1211904K, 26% used [0x00000006c0000000,0x00000006d3908220,0x0000000709f80000)
 Metaspace       used 92817K, capacity 96210K, committed 96512K, reserved 1134592K
  class space    used 10910K, capacity 11975K, committed 12032K, reserved 1048576K

Is it some weird deadlock issue ?这是一些奇怪的死锁问题吗？ Thanks in advance!提前致谢！

UPDATE Actually the build does not hang forever ( only 20 - 25 mins).更新实际上构建不会永远挂起（只有20 - 25 分钟）。 Still it is not clear what is the reason仍然不清楚是什么原因

3 个解决方案

解决方案1
 3  2018-03-01 22:48:38

Maven 3.5.x has some pretty terrible bugs, namely: Maven 3.5.x有一些非常可怕的错误，即：

What is specifically happening is that if you are building a project with submodules or multiple projects, Maven 3.5.x sporadically locks up when downloading duplicate dependencies. 具体发生的是，如果您正在使用子模块或多个项目构建项目，则在下载重复的依赖项时，Maven 3.5.x会偶尔锁定。 Example: Let spring-expression-4.3.5.RELEASE be a dependency of two or more project POMs. 示例：让spring-expression-4.3.5.RELEASE成为两个或多个项目POM的依赖项。 It's downloaded into the Maven Repo by project 1 at ".m2\\repository\\org\\springframework\\spring-expression\\4.3.5.RELEASE\\spring-expression-4.3.5.RELEASE.jar" (of course, with the POM and checksum files). 它通过项目1在“.m2 \\ repository \\ org \\ springframework \\ spring-expression \\ 4.3.5.RELEASE \\ spring-expression-4.3.5.RELEASE.jar”下载到Maven Repo中（当然，与POM和校验和文件）。 When project 2 goes to check/download the same dependency in the same location, it locks up for 20 minutes and then reports "0 B" was downloaded in the logs. 当项目2在同一位置检查/下载相同的依赖项时，它会锁定20分钟，然后在日志中下载报告“0 B”。

Until the Maven team addresses this issue in the 3.5.x releases, we pulled back to Maven 3.3.9 and the problem vanished. 直到Maven团队在3.5.x版本中解决了这个问题，我们撤回到Maven 3.3.9并且问题消失了。 (NOTE: This was regularly reproducible at the same point in dependency resolution in our project.) （注意：在我们的项目中，这在依赖性解析的同一点上可以定期重现。）

解决方案2
 0  2018-03-01 22:52:47

You could try https://github.com/jcgay/maven-profiler to profile the build process. 您可以尝试https://github.com/jcgay/maven-profiler来分析构建过程。 Perhaps it's an issue in specific plugin eg surefire taking 20 mins because someone committed a test with Thread.sleep(1200000); 也许这是特定插件中的问题，例如，因为有人使用Thread.sleep(1200000);了测试，所以需要20分钟Thread.sleep(1200000); . 。

解决方案3
 0  2021-11-09 13:11:53

I have been having the maven problem with hanging artifactory download on my Ubuntu (21.10) with all of the following versions:我在使用以下所有版本的 Ubuntu (21.10) 上挂起 artifactory 下载时遇到了 maven 问题：

  • 3.3.9 3.3.9
  • 3.6.3 3.6.3
  • 3.8.4 3.8.4

Maven hangs while downloading a dependency from artifactory server.从工件服务器下载依赖项时 Maven 挂起。 If you actually go to the .m2/repository/... you will see there is a .lock file and the artifact is a part files with 0 size.如果你真的去 .m2/repository/... 你会看到有一个 .lock 文件，工件是一个大小为 0 的部分文件。 Maven seems to induce a deadlock to itself. Maven 似乎会导致自身陷入僵局。

I tried using 1 thread:我尝试使用 1 个线程：

mvn -T 1 clean verify

did not help much.没有多大帮助。 I also tried adding this to my ~/.mavenrc:我也尝试将它添加到我的 ~/.mavenrc 中：

-Dmaven.artifact.threads=1

also did not help.也没有帮助。

What seems to solve the issue is deleting the lock files on the hanging dependency.Either by going to the dependency directory or within the m2 repository like this:似乎解决这个问题的是删除挂起依赖项上的锁定文件。通过转到依赖项目录或在 m2 存储库中，如下所示：

cd ~/
rm -rf .m2/repository/**.lock

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