brian yoder created OPENJPA-2566:
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             Summary: Memory leak when using addFetchGroup?
                 Key: OPENJPA-2566
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2566
             Project: OpenJPA
          Issue Type: Bug
    Affects Versions: 2.3.1
            Reporter: brian yoder


I have noticed a memory leak when using the following code on Glassfish J2EE 
server 3.1, however suspect the issue is not related to Glassfish.

OpenJPAEntityManager kem = OpenJPAPersistence.cast(emNoTran);
kem.getFetchPlan().addFetchGroup("contactDetails");

It seems the code causes a huge memory leak with JDBCBrokerFactory growing its 
MapBackedSet, ConcurrentHashMap.

Any ideas why this would be?  I am calling the above code over-and-over again 
for each EJB method invocation, which it was my understanding it is only good 
for the current EM transaction.  Perhaps I have misunderstood.

My Requirement is to set the fetch group only for the current transaction, such 
that lazy fields for a particular entity get loaded up front, but only within 
this call from the EJB.



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