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  1. WildFly
  2. WFLY-12676

memory leak, org.jboss.jca.core.connectionmanager.pool.idle.IdleRemover$IdleRemoverRunner is keeping deployment in memory after undeployment

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Details

    • Bug
    • Resolution: Done
    • Blocker
    • 19.0.0.Beta1, 19.0.0.Final
    • 18.0.0.Final
    • JCA
    • None

    Description

      As part of looking at WFLY-12671, I found that org.jboss.jca.core.connectionmanager.pool.idle.IdleRemover$IdleRemoverRunner is leaking the application classloader (after undeployment) via org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory originalTCCL being kept after undeployment.

      See attached jcaleakmarlow.txt (also attached to WFLY-12671), which shows the leak.

      I tried waiting a few minutes after undeployment and the leak was still there. I also tried an even simpler app (2lc.jar) and still there is a leak. I also attached the heapdump (java_pid12802.0001.zip)

      To recreate:

      • Deploy simple (no app code will be executed) 2lc.jar app.
      • Undeploy by doing "rm 2lc.jar.deployed" in wildfly/standalone/deployments
      • Look at memory with MAT or other memory leak tool.

      Attachments

        1. 2lc.jar
          2 kB
        2. java_pid12802.0001.zip
          41.06 MB
        3. jcaleakmarlow.txt
          3 kB

        Issue Links

          is blocked by

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. WFLY-12742 Upgrade IronJacamar from 1.4.18.Final to 1.4.19.Final

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Closed
          is caused by

          Bug - A problem that impairs or prevents the functions of the product. WFLY-10798 TCCL is not set to datasource module

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          is incorporated by

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. JBEAP-17911 Upgrade IronJacamar to 1.4.19.Final

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Closed

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. WFLY-12742 Upgrade IronJacamar from 1.4.18.Final to 1.4.19.Final

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Closed
          relates to

          Bug - A problem that impairs or prevents the functions of the product. JBEAP-17803 memory leak, org.jboss.jca.core.connectionmanager.pool.idle.IdleRemover$IdleRemoverRunner is keeping deployment in memory after undeployment

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Verified

          Bug - A problem that impairs or prevents the functions of the product. WFLY-12671 Memory Leak of PersistenceUnitMetadataImpl

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

          Activity

            People

              smaestri@redhat.com Stefano Maestri
              smarlow1@redhat.com Scott Marlow
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              Dates

                Created:
                Updated:
                Resolved: