Re: JavaSpace.notify() "not reliable"

On 21.05.2007, at 21:26, Bob Scheifler wrote:

>> Done. Now, when I experience a notification being dropped, a
>> NoSuchObjectException is indeed being logged:
>
> So first, I had things bass ackwards, you really wanted to turn
> on client remote call logging in outrigger, not server remote call
> logging.  And the logging change previously discussed should not
> have altered seeing the logging record you provided, as it's using
> an outrigger logger, not an RMI one.  Are you sure something else
> hasn't changed?
>
>> Obviously, my JavaSpace client is becoming "permanently
>> unavailable (NoSuchObjectException)" and "further events will not
>> be delivered to it." Is anyone able to speculate, how my humble
>> client may cause this behavior?
>
> If your client isn't holding a strong reference to the listener impl,
> it can get GC'd.
>
> But this exception doesn't correlate with your description of
> occasionally dropped events.  Or is your client re-registering
> for events, and you didn't explain that before?  Or are you
> perhaps seeing a new different problem than before?

I'm afraid, it's still the same problem. The polling is good to have,
as a backup. But right now, my app depends on it. It wouldn't work
without it. I need to stop the NoSuchObjectExceptions. I do re-
register for every event. I am holding strong references to the
listeners. As far as I can see, their references do not get GC'd.
What else could trigger Outrigger to throw NoSuchObjectExceptions on
occasion?

I'd like to look at the code handling this. Do you have a pointer?

Timur

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