Hi, Does it really occur with Karaf 4.2.8 ?
I never saw such issue. Any step to reproduce this (maybe changing time) ? Regards JB > Le 2 oct. 2020 à 13:31, Henning Treu <[email protected]> a écrit : > > Hi list, > > we bundle our OSGi application with karaf, having our own feature repository > put into etc/org.apache.karaf.features.cfg and also defined our boot feature > with the featuresBoot property. > > When starting up on RHEL7 and re-starting on Docker the startup gets > interrupted occasionally when > org.apache.karaf.features.internal.osgi.Activator tries to read > etc/org.apache.karaf.features.cfg. We can see in a heap dump from this state, > that the features.core bundle is loaded, but the properties from the config > file are not present. > This leads to no further features/bundles being installed. > > When debugging this I can see the timestamps on > etc/org.apache.karaf.features.cfg beeing later then the timestamps on the > karaf pid file: > > /opt/instana/agent# stat agent.pid > File: agent.pid > Size: 5 Blocks: 8 IO Block: 4096 regular file > Device: 41h/65d Inode: 19025079 Links: 1 > Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) > Access: 2020-10-02 06:52:09.823302941 +0000 > Modify: 2020-10-02 06:57:41.029279007 +0000 > Change: 2020-10-02 06:57:41.029279007 +0000 > Birth: - > > /opt/instana/agent# stat etc/org.apache.karaf.features.cfg > File: etc/org.apache.karaf.features.cfg > Size: 3393 Blocks: 8 IO Block: 4096 regular file > Device: 41h/65d Inode: 39076582 Links: 1 > Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) > Access: 2020-10-02 06:57:42.645969271 +0000 > Modify: 2020-10-02 06:57:42.645969271 +0000 > Change: 2020-10-02 06:57:42.645969271 +0000 > Birth: - > > > Following is a thread dump from the stuck startup: > > /opt/instana/agent# jvm/bin/jcmd 26665 Thread.print > 26665: > 2020-10-02 07:00:53 > Full thread dump OpenJDK 64-Bit Server VM (25.232-b18 mixed mode): > "Attach Listener" #18 daemon prio=9 os_prio=0 tid=0x0000000002a64000 > nid=0x6cd4 waiting on condition [0x0000000000000000] > java.lang.Thread.State: RUNNABLE > "fileinstall-/opt/instana/agent/deploy" #17 daemon prio=5 os_prio=0 > tid=0x0000000002de2000 nid=0x6842 in Object.wait() [0x00007faa5ef42000] > java.lang.Thread.State: TIMED_WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f8f7d1d0> (a > org.apache.felix.fileinstall.internal.DirectoryWatcher) > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:320) > - locked <0x00000000f8f7d1d0> (a > org.apache.felix.fileinstall.internal.DirectoryWatcher) > "fileinstall-/opt/instana/agent/etc" #15 daemon prio=5 os_prio=0 > tid=0x0000000002e2a800 nid=0x6841 in Object.wait() [0x00007faa5efa3000] > java.lang.Thread.State: TIMED_WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f8c87360> (a > org.apache.felix.fileinstall.internal.DirectoryWatcher) > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:320) > - locked <0x00000000f8c87360> (a > org.apache.felix.fileinstall.internal.DirectoryWatcher) > "Thread-2" #16 daemon prio=5 os_prio=0 tid=0x0000000002ccc800 nid=0x683c > runnable [0x00007faa5f880000] > java.lang.Thread.State: RUNNABLE > at sun.nio.fs.LinuxWatchService.poll(Native Method) > at sun.nio.fs.LinuxWatchService.access$600(LinuxWatchService.java:47) > at sun.nio.fs.LinuxWatchService$Poller.run(LinuxWatchService.java:314) > at java.lang.Thread.run(Thread.java:748) > "CM Event Dispatcher" #14 daemon prio=5 os_prio=0 tid=0x0000000002caa000 > nid=0x683b in Object.wait() [0x00007faa5f8e1000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f8c87860> (a java.util.LinkedList) > at java.lang.Object.wait(Object.java:502) > at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:79) > - locked <0x00000000f8c87860> (a java.util.LinkedList) > at java.lang.Thread.run(Thread.java:748) > "CM Configuration Updater" #13 daemon prio=5 os_prio=0 tid=0x0000000002ca1800 > nid=0x683a in Object.wait() [0x00007faa5f942000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f8c87c78> (a java.util.LinkedList) > at java.lang.Object.wait(Object.java:502) > at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:79) > - locked <0x00000000f8c87c78> (a java.util.LinkedList) > at java.lang.Thread.run(Thread.java:748) > "Coordination Timer" #12 daemon prio=5 os_prio=0 tid=0x0000000002c8d000 > nid=0x6839 in Object.wait() [0x00007faa5fa4b000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f8c87e18> (a java.util.TaskQueue) > at java.lang.Object.wait(Object.java:502) > at java.util.TimerThread.mainLoop(Timer.java:526) > - locked <0x00000000f8c87e18> (a java.util.TaskQueue) > at java.util.TimerThread.run(Timer.java:505) > "Karaf Lock Monitor Thread" #11 prio=5 os_prio=0 tid=0x0000000002863000 > nid=0x6838 waiting on condition [0x00007faa5f804000] > java.lang.Thread.State: TIMED_WAITING (sleeping) > at java.lang.Thread.sleep(Native Method) > at org.apache.karaf.main.Main.doMonitor(Main.java:410) > at org.apache.karaf.main.Main.access$100(Main.java:74) > at org.apache.karaf.main.Main$3.run(Main.java:377) > "FelixStartLevel" #10 daemon prio=5 os_prio=0 tid=0x000000000250a000 > nid=0x6837 in Object.wait() [0x00007faa5fb20000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f84d8b00> (a java.util.ArrayList) > at java.lang.Object.wait(Object.java:502) > at > org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:283) > - locked <0x00000000f84d8b00> (a java.util.ArrayList) > at java.lang.Thread.run(Thread.java:748) > "FelixFrameworkWiring" #9 daemon prio=5 os_prio=0 tid=0x0000000002508000 > nid=0x6836 in Object.wait() [0x00007faa5fc62000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f84d8cb8> (a java.util.ArrayList) > at java.lang.Object.wait(Object.java:502) > at > org.apache.felix.framework.FrameworkWiringImpl.run(FrameworkWiringImpl.java:172) > - locked <0x00000000f84d8cb8> (a java.util.ArrayList) > at java.lang.Thread.run(Thread.java:748) > "FelixDispatchQueue" #8 prio=5 os_prio=0 tid=0x0000000002577000 nid=0x6835 in > Object.wait() [0x00007faa5fb81000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f84d8e70> (a java.util.ArrayList) > at java.lang.Object.wait(Object.java:502) > at > org.apache.felix.framework.EventDispatcher.run(EventDispatcher.java:1122) > - locked <0x00000000f84d8e70> (a java.util.ArrayList) > at > org.apache.felix.framework.EventDispatcher.access$000(EventDispatcher.java:54) > at > org.apache.felix.framework.EventDispatcher$1.run(EventDispatcher.java:102) > at java.lang.Thread.run(Thread.java:748) > "Service Thread" #6 daemon prio=9 os_prio=0 tid=0x0000000001f7d000 nid=0x6830 > runnable [0x0000000000000000] > java.lang.Thread.State: RUNNABLE > "C2 CompilerThread0" #5 daemon prio=9 os_prio=0 tid=0x0000000001f73000 > nid=0x682f waiting on condition [0x0000000000000000] > java.lang.Thread.State: RUNNABLE > "Signal Dispatcher" #4 daemon prio=9 os_prio=0 tid=0x0000000001f63000 > nid=0x682e runnable [0x0000000000000000] > java.lang.Thread.State: RUNNABLE > "Finalizer" #3 daemon prio=8 os_prio=0 tid=0x0000000001f3e800 nid=0x682d in > Object.wait() [0x00007faa63b2e000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f83a18a8> (a > java.lang.ref.ReferenceQueue$Lock) > at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:144) > - locked <0x00000000f83a18a8> (a java.lang.ref.ReferenceQueue$Lock) > at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:165) > at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:216) > "Reference Handler" #2 daemon prio=10 os_prio=0 tid=0x0000000001f34000 > nid=0x682c in Object.wait() [0x00007faa63b8f000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f83a1a60> (a java.lang.ref.Reference$Lock) > at java.lang.Object.wait(Object.java:502) > at java.lang.ref.Reference.tryHandlePending(Reference.java:191) > - locked <0x00000000f83a1a60> (a java.lang.ref.Reference$Lock) > at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:153) > "main" #1 prio=5 os_prio=0 tid=0x0000000001ec4000 nid=0x682a in Object.wait() > [0x00007faa65f49000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f855e590> (a > org.apache.felix.framework.util.ThreadGate) > at > org.apache.felix.framework.util.ThreadGate.await(ThreadGate.java:79) > - locked <0x00000000f855e590> (a > org.apache.felix.framework.util.ThreadGate) > at org.apache.felix.framework.Felix.waitForStop(Felix.java:1075) > at org.apache.karaf.main.Main.awaitShutdown(Main.java:668) > at org.apache.karaf.main.Main.main(Main.java:188) > "VM Thread" os_prio=0 tid=0x0000000001f2a000 nid=0x682b runnable > "VM Periodic Task Thread" os_prio=0 tid=0x0000000001f80800 nid=0x6831 waiting > on condition > JNI global references: 304 > > This is our startup.properties: > > # Bundles to be started on startup, with startlevel > mvn\:org.apache.karaf.features/org.apache.karaf.features.extension/4.2.9 = 1 > mvn\:org.ops4j.pax.url/pax-url-aether/2.6.2 = 5 > mvn\:org.ops4j.pax.logging/pax-logging-api/1.11.6 = 8 > mvn\:org.ops4j.pax.logging/pax-logging-log4j2/1.11.6 = 8 > mvn\:org.fusesource.jansi/jansi/1.18 = 8 > mvn\:org.apache.felix/org.apache.felix.coordinator/1.0.2 = 9 > mvn\:org.apache.felix/org.apache.felix.configadmin/1.9.16 = 10 > mvn\:org.apache.felix/org.apache.felix.fileinstall/3.6.6 = 11 > mvn\:org.apache.karaf.features/org.apache.karaf.features.core/4.2.9 = 15 > > I suspect a race condition between felix fileinstall, felix config admin and > the feature.core bundle to cause this when the file is re-written by > fileinstall(?) and feature.core opening it for reading. Unfortunately I have > no detailed experience in the combined workings of those components. > > Happy to hear any suggestion. > > ps: seen with karaf 4.2.8 on RHEL7 and 4.2.9 on docker. > > Cheers > /henning > -- > Henning Treu | Senior Software Engineer > Mobile: +49 160 1797564 > > INSTANA Inc | 222 South Riverside Plaza, 15th Floor | Chicago, IL 60606 | > United States > > INSTANA GMBH | Dunkelnberger Str. 39 | 42697 Solingen | Deutschland > Sitz der Gesellschaft: Solingen | HRB 26637 | Amtsgericht Wuppertal > Geschäftsführer: Mirko Novakovic | Pavlo Baron
