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From "Simone Gianni (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LABS-472) [database] Concurrency problem in JPA database initialization
Date Fri, 16 Oct 2009 12:12:31 GMT

     [ https://issues.apache.org/jira/browse/LABS-472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Simone Gianni resolved LABS-472.
--------------------------------

    Resolution: Fixed

> [database] Concurrency problem in JPA database initialization
> -------------------------------------------------------------
>
>                 Key: LABS-472
>                 URL: https://issues.apache.org/jira/browse/LABS-472
>             Project: Labs
>          Issue Type: Bug
>          Components: Magma
>    Affects Versions: Current
>            Reporter: Simone Gianni
>            Assignee: Simone Gianni
>            Priority: Critical
>             Fix For: Current
>
>   Original Estimate: 0h
>  Remaining Estimate: 0h
>
> The problem is evident when more than one thread starts using the database during startup.
For example, when there are jobs that run concurrently with main startup sequence.
> Two different JPA connections are started, and one of the two reports errors during initialization.

> A concurrent lock should be present to pause other threads waiting for a database connection
until the first one is correctly initialized.

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