JBoss - Java heap retention in PeriodicRecovery thread's '_xidScans' HashTable

Solution Verified - Updated -

Issue

  • We're receiving OutOfMemoryErrors, and the heap dump shows the heap being consumed by the PeriodicRecovery thread's HashTable called '_xidScans'
  • The server.log shows DEBUG messages like the following:

        DEBUG [org.jboss.resource.connectionmanager.ManagedConnectionFactoryDeployment] (Thread-19) Unable to execute isValid() due to null
    

Environment

  • JBoss Enterprise Application Platform (EAP)
    • 5.1.x

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