Calculer Girl
  1. Calculer Girl
  3. Maven jetty plugin – délai lors du démarrage en arrière-plan
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Maven jetty plugin – délai lors du démarrage en arrière-plan

Je commence un serveur de jetée sur Linux en utilisant

nohup mvn jetty:run &

pour l’exécuter en arrière-plan et restr quand je quitte la console. Habituellement (mvn jetty: run) il commence en quelques secondes, mais dans ce cas, il faut environ une minute pour commencer. Quelle peut être la cause d’un tel retard?

Trace de la stack 

 Full thread dump Java HotSpot(TM) 64-Bit Server VM (11.0-b16 mixed mode): "Attach Listener" daemon prio=10 tid=0x000000004bba8c00 nid=0x560a waiting on condition [0x0000000000000000..0x0000000000000000] java.lang.Thread.State: RUNNABLE "Timer-1" daemon prio=10 tid=0x00002aaac053d800 nid=0x55fb in Object.wait() [0x0000000042392000..0x0000000042392b90] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a java.util.TaskQueue) at java.util.TimerThread.mainLoop(Timer.java:509) - locked  (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:462) "StopJettyPluginMonitor" daemon prio=10 tid=0x00002aaac04b4c00 nid=0x55fa runnable [0x0000000042291000..0x0000000042291b10] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384) - locked  (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.mortbay.jetty.plugin.util.Monitor.run(Monitor.java:74) "Timer-0" daemon prio=10 tid=0x000000004b5cf800 nid=0x55f9 in Object.wait() [0x0000000040c78000..0x0000000040c78a90] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a java.util.TaskQueue) at java.util.TimerThread.mainLoop(Timer.java:509) - locked  (a java.util.TaskQueue) at java.util.TimerThread.run(Timer.java:462) "1455093129@qtp-422797318-1 - Acceptor0 [email protected]:8080" prio=10 tid=0x000000004b6d9800 nid=0x55f7 runnable [0x000000004130c000..0x000000004130ca10] java.lang.Thread.State: RUNNABLE at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method) at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:215) at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65) at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69) - locked  (a sun.nio.ch.Util$1) - locked  (a java.util.Collections$UnmodifiableSet) - locked  (a sun.nio.ch.EPollSelectorImpl) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80) at org.mortbay.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:459) at org.mortbay.io.nio.SelectorManager.doSelect(SelectorManager.java:192) at org.mortbay.jetty.nio.SelectChannelConnector.accept(SelectChannelConnector.java:124) at org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:706) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520) "91446054@qtp-422797318-0" prio=10 tid=0x000000004b621400 nid=0x55f6 in Object.wait() [0x000000004120b000..0x000000004120bd90] java.lang.Thread.State: TIMED_WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a org.mortbay.thread.QueuedThreadPool$PoolThread) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:563) - locked  (a org.mortbay.thread.QueuedThreadPool$PoolThread) "pool-1-thread-5" prio=10 tid=0x00002aaac15d4c00 nid=0x55f5 in Object.wait() [0x0000000041a4f000..0x0000000041a4fd10] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at java.lang.Object.wait(Object.java:485) at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316) - locked  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) "pool-1-thread-4" prio=10 tid=0x00002aaac0134000 nid=0x55f4 in Object.wait() [0x000000004194e000..0x000000004194ec90] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at java.lang.Object.wait(Object.java:485) at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316) - locked  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) "pool-1-thread-3" prio=10 tid=0x000000004ba72800 nid=0x55f3 in Object.wait() [0x0000000042190000..0x0000000042190c10] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at java.lang.Object.wait(Object.java:485) at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316) - locked  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) "pool-1-thread-2" prio=10 tid=0x000000004b8b6c00 nid=0x55f2 in Object.wait() [0x000000004208f000..0x000000004208fb90] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at java.lang.Object.wait(Object.java:485) at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316) - locked  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) "pool-1-thread-1" prio=10 tid=0x000000004b8b6400 nid=0x55f1 in Object.wait() [0x0000000040415000..0x0000000040415b10] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at java.lang.Object.wait(Object.java:485) at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316) - locked  (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054) at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575) at java.lang.Thread.run(Thread.java:619) "Low Memory Detector" daemon prio=10 tid=0x000000004affd800 nid=0x55eb runnable [0x0000000000000000..0x0000000000000000] java.lang.Thread.State: RUNNABLE "ComstackrThread1" daemon prio=10 tid=0x000000004affb800 nid=0x55ea waiting on condition [0x0000000000000000..0x0000000041d8b4d0] java.lang.Thread.State: RUNNABLE "ComstackrThread0" daemon prio=10 tid=0x000000004aff7800 nid=0x55e9 waiting on condition [0x0000000000000000..0x0000000041c8a450] java.lang.Thread.State: RUNNABLE "Signal Dispatcher" daemon prio=10 tid=0x000000004aff5c00 nid=0x55e8 runnable [0x0000000000000000..0x0000000041b8a820] java.lang.Thread.State: RUNNABLE "Finalizer" daemon prio=10 tid=0x000000004afd2400 nid=0x55e7 in Object.wait() [0x000000004184d000..0x000000004184db10] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116) - locked  (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159) "Reference Handler" daemon prio=10 tid=0x000000004afd0800 nid=0x55e6 in Object.wait() [0x000000004174c000..0x000000004174ca90] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a java.lang.ref.Reference$Lock) at java.lang.Object.wait(Object.java:485) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116) - locked  (a java.lang.ref.Reference$Lock) "main" prio=10 tid=0x000000004af6e000 nid=0x55e4 in Object.wait() [0x000000004072f000..0x0000000040730ed0] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on  (a org.mortbay.thread.QueuedThreadPool$Lock) at java.lang.Object.wait(Object.java:485) at org.mortbay.thread.QueuedThreadPool.join(QueuedThreadPool.java:298) - locked  (a org.mortbay.thread.QueuedThreadPool$Lock) at org.mortbay.jetty.plugin.Jetty6PluginServer.join(Jetty6PluginServer.java:206) at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:461) at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:383) at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210) at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:553) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:523) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137) at org.apache.maven.cli.MavenCli.main(MavenCli.java:362) at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:41) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) "VM Thread" prio=10 tid=0x000000004afcb000 nid=0x55e5 runnable "VM Periodic Task Thread" prio=10 tid=0x000000004b000000 nid=0x55ec waiting on condition JNI global references: 861

Je suis tellement fatigué de regarder les gens abuser de nohup . Voici comment fonctionnent les routines de démonisation:

  1. Créez un processus enfant.
  2. Lancer le démon en tant qu’enfant de ce processus enfant.
  3. Quittez le premier processus.

Une manière simple d’émuler ceci en utilisant sh est la suivante.

sh -c "mvn jetty:run &"

Observer… 

 scott @ optimusprime: ~ / code / leapfrog / lasso> sh -c "mvn jetty: exécuter &"
 scott @ optimusprime: ~ / code / leapfrog / lasso> ps aux |  grep jetty: courir
 scott 26165 45,5 5,8 813556 235764 pts / 9 Sl 15:23 0:06 / usr / lib / jvm / java-6-sun // bin / java -Xmx512M -classpath /home/scott/opt/apache-maven-2.2. 1 // boot / classworlds-1.1.jar -Dclassworlds.conf = / home / scott / opt / apache-maven-2.2.1 // bin / m2.conf -Dmaven.home = / home / scott / opt / apache- maven-2.2.1 / org.codehaus.classworlds.Launcher "jetty: run"
 scott @ optimusprime: ~ / code / leapfrog / lasso> exit

Si je vérifie ma liste de processus à partir d’un terminal distinct ou ultérieurement, le programme est toujours en cours d’exécution.

Cependant, je dois demander pourquoi, au lieu de simplement installer votre application Web sur un serveur d’applications local, et de la démarrer? J’espère que vous ne gérez pas vos environnements réels en utilisant apache maven.

Je l’exécuterais au premier plan, et déclencherais un vidage de thread (Ctrl + Break), et verrais ce qu’il fait en inspectant chaque trace de stack de threads. Sans plus d’informations, je ne peux plus vous conseiller.

Je vous suggère d’essayer d’utiliser l’ screen . Peut être exagéré pour une tâche aussi simple, mais vous pouvez l’envelopper dans un script shell.

Utiliser maven est très pratique pour télécharger, installer et démarrer une application. Parmi de nombreux autres avantages, maven offre aux développeurs la possibilité de gérer la version de Jetty. En utilisant les conseils fournis ici, je pense que maven correspond à la facture en tant que mécanisme d’initiation à la production.