[rules-users] Does anyone have a Fusion application running?

[Wolfgang Laun]

It can't be the hours - a program doesn't get bored. What about the number of
inserts, retracts, updates, firings? But above all, do show some stack dumps.
If they point into your rules, are you prepared to show some rules on request?

I'd not suggest stopping and re-starting the engine if you want to stay as
real-time as possible; run it in one thread, insert from another.

Apart from timestamping and automated expiry management there isn't
much that distinguished an engine handling events from one that deals
with timeless facts.

-W

On 15/12/2011, Robert Crawford <crawford at kloognome.com> wrote:
> I'm asking because I'm continuously getting exceptions from mine. I get
> exceptions from the engine when it's expiring events, I get exceptions while
> inserting objects in my rules, I get them when I insert through a named
> entry point, I get them for the sin of apparently just having a sliding time
> window in my rules. They're all wrapped around NullPointerExceptions, and
> while they don't shut the engine down, they ARE preventing the system from
> working correctly.
>
> None of this happens immediately. In the short-term everything appears to be
> OK. It's after running for 6+ hours that I start to see this.
>
> I'm running with 5.2.0-Final, which I know is not the latest release, but I
> dropped back to it because, well, I was getting too many failures and
> exceptions with 5.3.0.
>
> I'm not inserting data from another thread. The rules engine is started with
> fireUntilHalt, and when I have a data backlog to insert into it, I call halt
> and the same thread that called fireUntilHalt loads the data, then calls
> fireUntilHalt again.
>
> I'm not using MultiThreadEvaluationOption -- which in my experience just
> generates MORE exceptions than I'm getting now.
>
> Nothing older than the event expiration age is being inserted.
>
> Any advice? Any examples of a continuously-running Fusion application anyone
> can share with me?
>
> Thanks!
>
>
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