[jira] [Created] (DELTASPIKE-1378) EntityManagerRefLookup returns null globalEntityManager when lazyInitGlobalEntityManager is called by multiple threads

["Raymond Domingo (JIRA)" <ji...@apache.org>]

Raymond Domingo created DELTASPIKE-1378:
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             Summary: EntityManagerRefLookup returns null globalEntityManager when lazyInitGlobalEntityManager is called by multiple threads
                 Key: DELTASPIKE-1378
                 URL: https://issues.apache.org/jira/browse/DELTASPIKE-1378
             Project: DeltaSpike
          Issue Type: Bug
          Components: JPA-Module
    Affects Versions: 1.9.0, 1.8.0
            Reporter: Raymond Domingo


*Situation*

If multiple threads invoke lazyInitGlobalEntityManager at same time and lazyInitGlobalEntityManager isn't invoked before. Some of these threads might end up with a null entitymanager, because lazyInitGlobalEntityManager isn't synchronized (or this.globalEntityManagerInitialized = true is at wrong place).

Might be *important* to fix this, because In rare situations this might break your application and even cause inconsistent data.

*Problem*

entityManager is null after initialization is concurrently called

*Expected*

entityManager won't be null when initialized concurrently

 

*PR*

[https://github.com/apache/deltaspike/pull/89]



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