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我有一個maven構建，我在Docker容器中使用Docker中心的官方Maven圖像在Docker容器中運行。 .m2目錄被掛載到一個NFS共享中。Maven可以創建文件夾和鎖定文件，但下載時掛起
這可以在一個環境中使用，但在另一個相同的環境中，它在寫入鎖定文件後將始終掛起。它從來沒有完成下載，但永遠掛在那裏。由於maven debug在掛起點後沒有提供任何細節，因此我決定觀看.m2目錄以查看發生了什麼。
[email protected]:/nfs-shares/jenkins/.m2$ inotifywait -m -r .
Setting up watches. Beware: since -r was given, this may take a while!
Watches established.
./ CREATE,ISDIR repository
./ OPEN,ISDIR repository
./ CLOSE_NOWRITE,CLOSE,ISDIR repository
./repository/ CREATE,ISDIR org
./repository/ OPEN,ISDIR org
./repository/ CLOSE_NOWRITE,CLOSE,ISDIR org
./repository/org/ CREATE,ISDIR springframework
./repository/org/ OPEN,ISDIR springframework
./repository/org/ CLOSE_NOWRITE,CLOSE,ISDIR springframework
./repository/org/springframework/ CREATE,ISDIR boot
./repository/org/springframework/ OPEN,ISDIR boot
./repository/org/springframework/ CLOSE_NOWRITE,CLOSE,ISDIR boot
./repository/org/springframework/boot/ CREATE,ISDIR spring-boot-starter-parent
./repository/org/springframework/boot/ OPEN,ISDIR spring-boot-starter-parent
./repository/org/springframework/boot/ CLOSE_NOWRITE,CLOSE,ISDIR spring-boot-starter-parent
./repository/org/springframework/boot/spring-boot-starter-parent/ CREATE,ISDIR 1.3.7.RELEASE
./repository/org/springframework/boot/spring-boot-starter-parent/ OPEN,ISDIR 1.3.7.RELEASE
./repository/org/springframework/boot/spring-boot-starter-parent/ CLOSE_NOWRITE,CLOSE,ISDIR 1.3.7.RELEASE
./repository/org/springframework/boot/spring-boot-starter-parent/1.3.7.RELEASE/ CREATE spring-boot-starter-parent-1.3.7.RELEASE.pom.part.lock
Maven似乎工作，它創建了一些文件夾，甚至鎖定文件，但它然後掛起。我如何獲得maven來完成或找到一些額外的信息來幫助我解決這個問題。
順便說一句，如果我在容器內使用臨時存儲，它會按預期下載軟件包。
UDPATE：其中一條評論提示了一個線程轉儲。在下面你可以看到我連接到正在運行的容器。我確認容器可以修改.m2目錄中的文件，然後使用jstack獲取進程的線程轉儲。
[email protected]:~$ sudo docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c7d1f4c91559 maven:alpine "cat" About an hour ago Up About an hour agitated_cori
[email protected]:~$ sudo docker exec -ti c7d1f4c91559 /bin/bash
bash-4.3$ ps
PID USER TIME COMMAND
1 1000 0:00 cat
6 1000 0:00 sh -c echo $$ > '/var/jenkins_home/workspace/[email protected]/durable-ca9825bd/pid'; jsc=durable-04ba6b757bca34373f180bd01ef64ca1; JENKINS_SERVER_COOKIE=$jsc '/var/jenkins_home/workspace/[email protected]/durable-ca
12 1000 0:00 {script.sh} /bin/sh -xe /var/jenkins_home/workspace/[email protected]/durable-ca9825bd/script.sh
13 1000 0:07 /usr/lib/jvm/java-1.8-openjdk/bin/java -classpath /usr/share/maven/boot/plexus-classworlds-2.5.2.jar -Dclassworlds.conf=/usr/share/maven/bin/m2.conf -Dmaven.home=/usr/share/maven -Dmaven.multiModuleProjectDirecto
1584 1000 0:00 /bin/bash
1589 1000 0:00 ps
bash-4.3$ cat /var/jenkins_home/workspace/[email protected]/durable-ca9825bd/script.sh
#!/bin/sh -xe
mvn -Dmaven.repo.local="$PWD"/../../.m2/repository clean compile
bash-4.3$ ls -la /var/jenkins_home/.m2/
total 16
drwxr-xr-x 3 1000 1000 4096 May 2 21:14 .
drwxrwxr-x 23 1000 1000 4096 May 3 11:55 ..
-rw-r--r-- 1 1000 1000 6 May 2 21:14 file.txt
drwxr-xr-x 3 1000 1000 4096 May 2 20:50 repository
bash-4.3$ cat /var/jenkins_home/.m2/file.txt
hello
bash-4.3$ vi /var/jenkins_home/.m2/file.txt
bash-4.3$ cat /var/jenkins_home/.m2/file.txt
hello
another
bash-4.3$ jstack 13
2017-05-03 13:04:37
Full thread dump OpenJDK 64-Bit Server VM (25.121-b13 mixed mode):
"Attach Listener" #11 daemon prio=9 os_prio=0 tid=0x00007fc4a4956800 nid=0x6a7 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Service Thread" #8 daemon prio=9 os_prio=0 tid=0x00007fc4a4343000 nid=0x2c runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C1 CompilerThread2" #7 daemon prio=9 os_prio=0 tid=0x00007fc4a4311800 nid=0x2b waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C2 CompilerThread1" #6 daemon prio=9 os_prio=0 tid=0x00007fc4a4302000 nid=0x2a waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C2 CompilerThread0" #5 daemon prio=9 os_prio=0 tid=0x00007fc4a42ff000 nid=0x29 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Signal Dispatcher" #4 daemon prio=9 os_prio=0 tid=0x00007fc4a42fc800 nid=0x28 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Finalizer" #3 daemon prio=8 os_prio=0 tid=0x00007fc4a42d5000 nid=0x27 in Object.wait() [0x00007fc48ba4b000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000dab108d8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
- locked <0x00000000dab108d8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
"Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x00007fc4a42ca800 nid=0x26 in Object.wait() [0x00007fc48bb4c000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000dab18178> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference.tryHandlePending(Reference.java:191)
- locked <0x00000000dab18178> (a java.lang.ref.Reference$Lock)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153)
"main" #1 prio=5 os_prio=0 tid=0x00007fc4a4179800 nid=0x20 runnable [0x00007fc4a3426000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.FileDispatcherImpl.lock0(Native Method)
at sun.nio.ch.FileDispatcherImpl.lock(FileDispatcherImpl.java:90)
at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1115)
at org.eclipse.aether.connector.basic.PartialFile$LockFile.tryLock(PartialFile.java:135)
at org.eclipse.aether.connector.basic.PartialFile$LockFile.lock(PartialFile.java:80)
at org.eclipse.aether.connector.basic.PartialFile$LockFile.<init>(PartialFile.java:67)
at org.eclipse.aether.connector.basic.PartialFile$Factory.newInstance(PartialFile.java:219)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.runTask(BasicRepositoryConnector.java:441)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:359)
at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:76)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:590)
at org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:258)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:529)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:430)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:255)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:232)
at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:303)
at org.apache.maven.project.ProjectModelResolver.resolveModel(ProjectModelResolver.java:193)
at org.apache.maven.project.ProjectModelResolver.resolveModel(ProjectModelResolver.java:243)
at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.java:1051)
at org.apache.maven.model.building.DefaultModelBuilder.readParent(DefaultModelBuilder.java:829)
at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:331)
at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:429)
at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:398)
at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:361)
at org.apache.maven.graph.DefaultGraphBuilder.collectProjects(DefaultGraphBuilder.java:400)
at org.apache.maven.graph.DefaultGraphBuilder.getProjectsForMavenReactor(DefaultGraphBuilder.java:391)
at org.apache.maven.graph.DefaultGraphBuilder.build(DefaultGraphBuilder.java:78)
at org.apache.maven.DefaultMaven.buildGraph(DefaultMaven.java:511)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:221)
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=0x00007fc4a42c0000 nid=0x25 runnable
"GC task thread#0 (ParallelGC)" os_prio=0 tid=0x00007fc4a4190800 nid=0x21 runnable
"GC task thread#1 (ParallelGC)" os_prio=0 tid=0x00007fc4a4192000 nid=0x22 runnable
"GC task thread#2 (ParallelGC)" os_prio=0 tid=0x00007fc4a4194000 nid=0x23 runnable
"GC task thread#3 (ParallelGC)" os_prio=0 tid=0x00007fc4a4195800 nid=0x24 runnable
"VM Periodic Task Thread" os_prio=0 tid=0x00007fc4a4382800 nid=0x2d waiting on condition
JNI global references: 235
bash-4.3$
容器我裏面只是證實，我可以訪問POM和我顯示調試輸出，剛剛掛起，在下載。
https://gist.github.com/dwatrous/34e1edc1db5e4756d4b33c83a9c2ccd0
我只是確認，我可以從Maven容器的.m2目錄目錄中寫入文件，所以我真的懷疑這與NFS或文件權限有關。這似乎主要是一個maven問題。 –
當不使用NFS時它工作嗎？因爲它在另一個環境中工作，所以必須有所不同。 –
掛起的線程轉儲對診斷問題很有用。 –