Resend. Hopefully Siddhi team can take care of this question.

Thanks

Edward Zhang

On Wed, Nov 18, 2015 at 4:07 PM, Edward Zhang <[email protected]>
wrote:

> Hi Siddhi team,
>
> Do we have anyway of tracking what events are removed from any type of
> windows, length(batch), or time(batch)? I investigated that removeEvents
> may not be the right solution.
>
> We have one requirement of migrating policy from one machine to another
> machine but keeping internal state there.
>
> Eagle uses policy in storm infrastructure, but one machine which holds the
> policy fails, then already-populated events in the window also are gone.
> Sometimes it is bad especially when we have built up a long window like
> monthly data.
>
> One possible way is to keep all events in the siddhi window to be
> snapshotted into application domain. Another way is to keep tracking what
> events are coming in and out, so application can track what are left in
> siddhi window.
>
> Here is the ticket for Eagle
> https://issues.apache.org/jira/browse/EAGLE-39
>
> Do you have similar request before? Or what do you suggest?
>
> Thanks
> Edward Zhang
>
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