Large heap retention in arjuna TransactionImple

Solution Verified - Updated -

Issue

  • We hit an OOME and the heap dump shows hundreds of thousnands of instances of com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple in the heap.
    • These objects are stored in the TransactionImple class's static _transactions map.
  • Possible memory leak in TransactionImple._transactions

Environment

  • JBoss Enterprise Application Platform (EAP)
    • 6.2
    • 6.3
    • 6.4

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