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From "Rick Curtis (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-1350) Race condition in the MetaDataRepository
Date Wed, 14 Oct 2009 15:59:31 GMT
Race condition in the MetaDataRepository
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                 Key: OPENJPA-1350
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1350
             Project: OpenJPA
          Issue Type: Bug
          Components: kernel
            Reporter: Rick Curtis


There is a race condition in the MetaDataRepository where if multiple threads try to get MetaData
for the same alias, one or more of the threads can get incorrect data. This can only occur
on the first (few) thread(s). After init is complete, the problem does not occur.

The error that is observed is the following:
<openjpa-2.0.0-SNAPSHOT-r422266:824454M fatal user error> org.apache.openjpa.util.MetaDataException:
Could not locate metadata for the class using alias "MdrTestEntity". Perhap
s you meant MdrTestEntity, which is a close match. This could mean that you have mis-spelled
the alias, or that OpenJPA failed to properly load the metadata for the type whose
alias is "MdrTestEntity". Registered alias mappings: "{MdrTestEntity=[class org.apache.openjpa.persistence.meta.MdrTestEntity]}"

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