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Archee_98
Participant
Jul 23, 2021 6:05 PM UTC
Answered

Issues of waiting on getting session for resource resolver

Hi, all!

Has anybody faced with issues of waiting on getting session for resource resolver on AEM 6.5.9 (ServicePack 1) ?
 
Thread dumps analysis shows that the issue is related with opening session for resource resolver. A lot of threads wait to lock resources to open resource resolver session on org.apache.jackrabbit.oak.segment.scheduler.LockBasedScheduler.getHeadNodeState method.
 
Such behaviour happens on both types of resource resolvers (see stacktraces below):

1) Using Administrative resource resolver

"0.0.0.0 [1626857833729] GET /content/my-project/en/page.html HTTP/1.1" daemon prio=3 tid=0x2354 nid=0x2354 waiting on condition [0x2354]
   java.lang.Thread.State: TIMED_WAITING
    - waiting on <70369dba> (a java.util.concurrent.Semaphore$FairSync)
    - locked <70369dba> (a java.util.concurrent.Semaphore$FairSync)
    at sun.misc.Unsafe.park(Native Method)
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1037)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
    at java.util.concurrent.Semaphore.tryAcquire(Semaphore.java:409)
    at org.apache.jackrabbit.oak.segment.scheduler.LockBasedScheduler.getHeadNodeState(LockBasedScheduler.java:219)
    at org.apache.jackrabbit.oak.segment.SegmentNodeStore.getRoot(SegmentNodeStore.java:198)
    at org.apache.jackrabbit.oak.core.MutableRoot.<init>(MutableRoot.java:164)
    at org.apache.jackrabbit.oak.core.ContentSessionImpl.getLatestRoot(ContentSessionImpl.java:105)
    at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.<init>(SessionDelegate.java:140)
    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl$1.<init>(RepositoryImpl.java:308)
    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl.createSessionDelegate(RepositoryImpl.java:306)
    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl.login(RepositoryImpl.java:283)
    at com.adobe.granite.repository.impl.CRX3RepositoryImpl.login(CRX3RepositoryImpl.java:150)
    at com.adobe.granite.repository.impl.SlingRepositoryImpl$2.run(SlingRepositoryImpl.java:123)
    at com.adobe.granite.repository.impl.SlingRepositoryImpl$2.run(SlingRepositoryImpl.java:115)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:549)
    at com.adobe.granite.repository.impl.SlingRepositoryImpl.createAdministrativeSession(SlingRepositoryImpl.java:115)
    at org.apache.sling.jcr.base.AbstractSlingRepository2.loginAdministrative(AbstractSlingRepository2.java:456)
    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrProviderStateFactory.createProviderState(JcrProviderStateFactory.java:111)
    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.authenticate(JcrResourceProvider.java:304)
    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.authenticate(JcrResourceProvider.java:76)
    at org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.authenticate(ProviderManager.java:161)
    at org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.getOrCreateProvider(ProviderManager.java:87)
    at org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.authenticateAll(ProviderManager.java:129)
    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.createControl(ResourceResolverImpl.java:143)
    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.<init>(ResourceResolverImpl.java:104)
    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.<init>(ResourceResolverImpl.java:98)
    at org.apache.sling.resourceresolver.impl.CommonResourceResolverFactoryImpl.getResourceResolverInternal(CommonResourceResolverFactoryImpl.java:273)
    at org.apache.sling.resourceresolver.impl.CommonResourceResolverFactoryImpl.getAdministrativeResourceResolver(CommonResourceResolverFactoryImpl.java:168)
    at org.apache.sling.resourceresolver.impl.ResourceResolverFactoryImpl.getAdministrativeResourceResolver(ResourceResolverFactoryImpl.java:115)
    at org.myproject.utils.ResourceResolverUtils.getAdminResourceResolver(ResourceResolverUtils.java:75)

2) Using Service Resource Resolver

"0.0.0.0 [1626857837270] GET /content/my-project/en/second-page.html HTTP/1.1" daemon prio=3 tid=0x2316 nid=0x2316 waiting on condition [0x2316]
   java.lang.Thread.State: TIMED_WAITING
    - waiting on <70369dba> (a java.util.concurrent.Semaphore$FairSync)
    - locked <70369dba> (a java.util.concurrent.Semaphore$FairSync)
    at sun.misc.Unsafe.park(Native Method)
    at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1037)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
    at java.util.concurrent.Semaphore.tryAcquire(Semaphore.java:409)
    at org.apache.jackrabbit.oak.segment.scheduler.LockBasedScheduler.getHeadNodeState(LockBasedScheduler.java:219)
    at org.apache.jackrabbit.oak.segment.SegmentNodeStore.getRoot(SegmentNodeStore.java:198)
    at org.apache.jackrabbit.oak.core.MutableRoot.<init>(MutableRoot.java:164)
    at org.apache.jackrabbit.oak.core.ContentSessionImpl.getLatestRoot(ContentSessionImpl.java:105)
    at org.apache.jackrabbit.oak.spi.security.authentication.AbstractLoginModule.getRoot(AbstractLoginModule.java:481)
    at org.apache.jackrabbit.oak.security.authentication.user.LoginModuleImpl.getUserAuthentication(LoginModuleImpl.java:250)
    at org.apache.jackrabbit.oak.security.authentication.user.LoginModuleImpl.login(LoginModuleImpl.java:128)
    at org.apache.felix.jaas.boot.ProxyLoginModule.login(ProxyLoginModule.java:52)
    at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
    at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
    at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
    at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
    at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
    at org.apache.jackrabbit.oak.core.ContentRepositoryImpl.login(ContentRepositoryImpl.java:163)
    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl.login(RepositoryImpl.java:282)
    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl.login(RepositoryImpl.java:225)
    at org.apache.jackrabbit.oak.jcr.session.SessionImpl.impersonate(SessionImpl.java:275)
    at com.adobe.granite.repository.impl.CRX3SessionImpl.impersonate(CRX3SessionImpl.java:149)
    at org.apache.sling.jcr.base.AbstractSlingRepository2.createServiceSession(AbstractSlingRepository2.java:205)
    at com.adobe.granite.repository.impl.SlingRepositoryImpl.createServiceSession(SlingRepositoryImpl.java:135)
    at org.apache.sling.jcr.base.AbstractSlingRepository2.createServiceSession(AbstractSlingRepository2.java:170)
    at org.apache.sling.jcr.base.AbstractSlingRepository2.loginService(AbstractSlingRepository2.java:383)
    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrProviderStateFactory.createProviderState(JcrProviderStateFactory.java:115)
    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.authenticate(JcrResourceProvider.java:304)
    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.authenticate(JcrResourceProvider.java:76)
    at org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.authenticate(ProviderManager.java:161)
    at org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.getOrCreateProvider(ProviderManager.java:87)
    at org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.authenticateAll(ProviderManager.java:129)
    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.createControl(ResourceResolverImpl.java:143)
    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.<init>(ResourceResolverImpl.java:104)
    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.<init>(ResourceResolverImpl.java:98)
    at org.apache.sling.resourceresolver.impl.CommonResourceResolverFactoryImpl.getResourceResolverInternal(CommonResourceResolverFactoryImpl.java:273)
    at org.apache.sling.resourceresolver.impl.ResourceResolverFactoryImpl.getServiceResourceResolver(ResourceResolverFactoryImpl.java:89)
    at org.myproject.utils.ResourceResolverUtils.getServiceResourceResolver(ResourceResolverUtils.java:55)​ 

 

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    John T Smith
    John T SmithCorrect answer
    Community Expert
    Jul 23, 2021 7:55 PM UTC

    No support here... You need to go to https://experienceleaguecommunities.adobe.com/

    View reply

    1 reply

    John T Smith
    Community Expert
    John T SmithCommunity ExpertCorrect answer
    Community Expert
    Jul 23, 2021 7:55 PM UTC

    No support here... You need to go to https://experienceleaguecommunities.adobe.com/

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