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https://issues.apache.org/jira/browse/OPENJPA-2158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Albert Lee closed OPENJPA-2158.
-------------------------------
> LiteAutoDetach + DetachProxyFields=false can lead to Broker concurrency
> exceptions
> ----------------------------------------------------------------------------------
>
> Key: OPENJPA-2158
> URL: https://issues.apache.org/jira/browse/OPENJPA-2158
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Affects Versions: 2.1.1, 2.2.0, 2.3.0
> Reporter: Rick Curtis
> Assignee: Rick Curtis
> Fix For: 2.3.0, 2.2.1
>
>
> OPENJPA-2014 added support for allowing proxies to stay in place after
> detach, but these detached proxy instances still hold a reference to a
> StateManager that is no longer valid.
> Exception data: <openjpa-2.2.1-SNAPSHOT-r422266:1244808 fatal general error>
> org.apache.openjpa.persistence.PersistenceException: Multiple concurrent
> threads attempted to access a single broker. By default brokers are not
> thread safe; if you require and/or intend a broker to be accessed by more
> than one thread, set the openjpa.Multithreaded property to true to override
> the default behavior.
> at
> org.apache.openjpa.kernel.BrokerImpl.endOperation(BrokerImpl.java:1956)
> at org.apache.openjpa.kernel.BrokerImpl.isActive(BrokerImpl.java:1904)
> at
> org.apache.openjpa.kernel.DelegatingBroker.isActive(DelegatingBroker.java:476)
> at
> org.apache.openjpa.persistence.EntityManagerImpl.isActive(EntityManagerImpl.java:677)
> at
> org.apache.openjpa.persistence.PersistenceExceptions$2.translate(PersistenceExceptions.java:76)
> at
> org.apache.openjpa.kernel.DelegatingQuery.translate(DelegatingQuery.java:99)
> at
> org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:544)
> at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:286)
> at
> org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:302)
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