Open sessions - JMX | Community
Skip to main content
VeenaVikraman
VeenaVikraman
New Participant
August 3, 2018
Solved

Open sessions - JMX

  • August 3, 2018
  • 15 replies
  • 6292 views

Hi All

    I am trying to figure out the code which has a session leak. I am following Adobe's documentation.Check and analyze if JCR session leaks in your AEM instance

But I have few models where a resourceResolver is injected using

@SlingObject

    private ResourceResolver resolver;

    I can see few class reference in JMX which has these classes mentioned in the stack trace. How will we handle these resolvers? Will these be closed automatically ?

TIA

Veena

This post is no longer active and is closed to new replies. Need help? Start a new post to ask your question.
Best answer by joerghoh

I just checked [1] and I haven't found a way that the ResourceTypeResolver (which seems to leak in your case) is actually leaking. It is always closed (line 665ff).

I cannot explain the fact that a lot of these session are actually open (it would be good if you could verify that by a heapdump), and that it's not a problem of the garbage collection.

[1] sling-org-apache-sling-resourceresolver/ResourceResolverControl.java at org.apache.sling.resourceresolver-1.4.8 · apache…

15 replies

Show previous replies
VeenaVikraman
VeenaVikramanAuthor
New Participant
August 6, 2018

@Jörg Hoh

Any help here ?

    VeenaVikraman
    VeenaVikramanAuthor
    New Participant
    August 6, 2018

    Thanks Arun , Jorg . The sessions and resourceResolver I opened is closed. But yet there are around 6500 open sessions in P1 which I am not sure what is causing. I tried manually opening each session detail given in JMX and tried to check the stack trace. Basically the stack trace points to me a class , where I have not opened any sessions implicitly, rather I can only see this line

    So as per the stack trace page.getContentResource().isResourceType(resourceType) is one culprit in the chain whcih opened the session. Please see the stack trace below.

    java.lang.Exception: The session was opened here:

    at org.apache.jackrabbit.oak.jcr.session.SessionStats.<init>(SessionStats.java:84)

    at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.<init>(SessionDelegate.java:150)

    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl$1.<init>(RepositoryImpl.java:301)

    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl.createSessionDelegate(RepositoryImpl.java:299)

    at org.apache.jackrabbit.oak.jcr.repository.RepositoryImpl.login(RepositoryImpl.java:281)

    at com.adobe.granite.repository.impl.CRX3RepositoryImpl.login(CRX3RepositoryImpl.java:94)

    at com.adobe.granite.repository.impl.SlingRepositoryImpl$2.run(SlingRepositoryImpl.java:112)

    at com.adobe.granite.repository.impl.SlingRepositoryImpl$2.run(SlingRepositoryImpl.java:104)

    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:104)

    at org.apache.sling.jcr.base.AbstractSlingRepository2.loginAdministrative(AbstractSlingRepository2.java:396)

    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrProviderStateFactory.createProviderState(JcrProviderStateFactory.java:82)

    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.authenticate(JcrResourceProvider.java:267)

    at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.authenticate(JcrResourceProvider.java:78)

    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:154)

    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.<init>(ResourceResolverImpl.java:116)

    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.<init>(ResourceResolverImpl.java:110)

    at org.apache.sling.resourceresolver.impl.CommonResourceResolverFactoryImpl.getResourceResolverInternal(CommonResourceResolverFactoryImpl.java:258)

    at org.apache.sling.resourceresolver.impl.CommonResourceResolverFactoryImpl.getAdministrativeResourceResolver(CommonResourceResolverFactoryImpl.java:141)

    at org.apache.sling.resourceresolver.impl.helper.ResourceResolverControl.getResourceTypeResourceResolver(ResourceResolverControl.java:689)

    at org.apache.sling.resourceresolver.impl.helper.ResourceResolverControl.getParentResourceType(ResourceResolverControl.java:713)

    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.getParentResourceType(ResourceResolverImpl.java:1304)

    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.getParentResourceType(ResourceResolverImpl.java:1293)

    at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.isResourceType(ResourceResolverImpl.java:1321)

    at org.apache.sling.api.resource.AbstractResource.isResourceType(AbstractResource.java:123)

    at com.<****>.aem.website.v1.core.utils.PageUtil.isResourceType(PageUtil.java:147)

    Hope this will help more

      smacdonald2008
      smacdonald2008
      New Participant
      August 4, 2018

      NIce responses Joerg and Arun!

        joerghoh
        joerghoh
        Employee
        August 3, 2018

        Applying Arun's statement to your question: Do not close sessions which are injected to your sling model.

          arunpatidar
          arunpatidar
          New Participant
          August 3, 2018

          Hi,

          If you open ResourceResolver then you need to close it.

          Please check Closing Resource Resolver

          Thanks

          Arun

          Arun Patidar
            Terms & ConditionsAccessibility statement

            Loading footer...