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From "Kurt Stam (JIRA)" <juddi-...@ws.apache.org>
Subject [jira] Updated: (JUDDI-103) Transient registry errors caused by jUDDI race condition
Date Tue, 02 Oct 2007 17:29:52 GMT

     [ https://issues.apache.org/jira/browse/JUDDI-103?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kurt Stam updated JUDDI-103:
----------------------------

    Fix Version/s: 2.0

>  Transient registry errors caused by jUDDI race condition
> ---------------------------------------------------------
>
>                 Key: JUDDI-103
>                 URL: https://issues.apache.org/jira/browse/JUDDI-103
>             Project: jUDDI
>          Issue Type: Bug
>            Reporter: Kurt Stam
>            Assignee: Steve Viens
>             Fix For: 2.0
>
>
> There is a race condition in the jUDDI codebase which causes transient registry failures.
> The symptom of the race condition is the following error message
>   E_busy (10400) The request cannot be processed at the current time. The Registry is
currently unavailable.
> The class containing the race condition is org.apache.juddi.registry.local.Registry
> Every call to Registry.getRegistry() results in the recreation and initialisation of
a global variable (registry). As the assignment of the global variable is made *before* the
initialisation method is called there exists a window of opportunity whereby a caller can
obtain a reference to an uninitialised registry. The consequence of this is that calls to
RegistryEngine.isAvailable() can return false.
> I'm not sure why the RegistryEngine is being recreated on every call but the current
code is unsafe (even if ignoring multiprocessor memory models). There should not be a global
reference to the registry if it is a requirement to recreate it on every invocation. If it
is not a requirement then the initialisation should really be occurring within a static block.


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