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https://issues.apache.org/jira/browse/KARAF-6089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16746212#comment-16746212
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ASF GitHub Bot commented on KARAF-6089:
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grgrzybek commented on pull request #729: [KARAF-6089] Prevent deadlock on
bundle lock between FelixStartLevel …
URL: https://github.com/apache/karaf/pull/729
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> Deadlock with FeatureDeploymentListener
> ---------------------------------------
>
> Key: KARAF-6089
> URL: https://issues.apache.org/jira/browse/KARAF-6089
> Project: Karaf
> Issue Type: Bug
> Components: karaf
> Affects Versions: 4.2.2
> Reporter: Grzegorz Grzybek
> Assignee: Grzegorz Grzybek
> Priority: Critical
> Fix For: 4.2.3
>
>
> When I have feature files inside {{deploy/}} dir (which is bad practice, I
> know), I see deadlock between:
> {noformat}
> "FelixStartLevel" #21 daemon prio=5 os_prio=0 tid=0x00007f56dd2ac000
> nid=0x7e69 waiting on condition [0x00007f5685bbc000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000000e3044b98> (a
> java.util.concurrent.FutureTask)
> 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.karaf.features.internal.service.FeaturesServiceImpl.doProvisionInThread(FeaturesServiceImpl.java:966)
> at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl.updateReposAndRequirements(FeaturesServiceImpl.java:912)
> at
> org.apache.karaf.deployer.features.FeatureDeploymentListener.bundleChanged(FeatureDeploymentListener.java:251)
> - locked <0x00000000e3044ce0> (a
> org.apache.karaf.deployer.features.FeatureDeploymentListener)
> at
> org.apache.karaf.deployer.features.FeatureDeploymentListener.init(FeatureDeploymentListener.java:95)
> at
> org.apache.karaf.deployer.features.osgi.Activator.doStart(Activator.java:52)
> at
> org.apache.karaf.util.tracker.BaseActivator.start(BaseActivator.java:89)
> at
> org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
> at org.apache.felix.framework.Felix.activateBundle(Felix.java:2240)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:2146)
> at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1373)
> at
> org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
> and
> {noformat}
> "features-3-thread-1" #55 prio=5 os_prio=0 tid=0x00007f5648486800 nid=0x7e99
> in Object.wait() [0x00007f55f2bf6000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:502)
> at org.apache.felix.framework.Felix.acquireBundleLock(Felix.java:5293)
> - locked <0x00000000e08b42f8> (a [Ljava.lang.Object;)
> at org.apache.felix.framework.Felix.startBundle(Felix.java:1948)
> at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
> at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)
> at
> org.apache.karaf.features.internal.service.BundleInstallSupportImpl.startBundle(BundleInstallSupportImpl.java:161)
> at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1116)
> at
> org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:997)
> at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1025)
> at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl.lambda$doProvisionInThread$13(FeaturesServiceImpl.java:964)
> at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl$$Lambda$97/1752701.call(Unknown
> Source)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
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