OutOfMemory runs in container environment in a long stress run
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Key: OPENJPA-1375
URL: https://issues.apache.org/jira/browse/OPENJPA-1375
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 2.0.0-M3
Reporter: Albert Lee
Assignee: Albert Lee
Fix For: 2.0.0
Long stress run in the app server/container environment caused a OutOfMemoery
exception with a heap dump that showed the following:
FetchConfigurationImpl$ConfigurationState
+ WsJpaFetchConfigurationImpl
+ Array of Object
+ IdentityHashMap
+ EntityManagerImpl
What happened is the container pooled the entity manager and clear the context
when a transaction is completed. However the IdentityHashMap in
EntityManagerImpl, which maps the fetch configuration to fetch plan, is not
being flush/clear. This caused the growth of the IdentityHashMap and eventually
the OOM in a long run.
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