[GE users] AlreadyActiveSessionException

Jeff White jsw at farecast.com
Wed Aug 2 20:24:03 BST 2006


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I do close sessions, though I need to make sure it's in a finally block 
to ensure it's always called.

Upon further investigation, I realize another object that creates a 
Session was unintentionally being initialized. My fault.

jeff

Daniel Templeton wrote:
> Jeff,
>
> Well, actually, you really should exit the session when your 
> application exits.  That, however, has nothing to do with your 
> problem.  Looking at the source code, I do not see any way that the 
> AlreadyActiveSessionException could be thrown, unless you have already 
> called init().  Sessions only exist in the context of a running 
> application.  When the application exits, the session is gone.  (With 
> u9, you will be able to explicitly reconnect by passing a parameter to 
> init(), but that's a different topic.)
>
> You said this problem is new.  Are you sure that nothing changed in 
> your application that would cause init() to be called more than once?
>
> Daniel
>
> Jeff White wrote:
>> I am getting this exception when trying to Session.init(null) the 
>> very first and only time in my application. Did a previous process 
>> leave the grid in a bad state? Do I need to somehow "exit" the 
>> previous session? I have run this app many times and have never 
>> encountered this exception. I am running 6.0u8.
>>
>> org.ggf.drmaa.AlreadyActiveSessionException: Initialization failed 
>> due to existing DRMAA session.
>>        at com.sun.grid.drmaa.SessionImpl.nativeInit(Native Method)
>>        at com.sun.grid.drmaa.SessionImpl.init(SessionImpl.java:277)
>>
>> thanks,
>> jeff
>>
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