Sure. I created https://issues.apache.org/jira/browse/GEODE-1471 last night
and just added Gal's details this morning.

Thanks,
Barry Oglesby


On Wed, Jun 1, 2016 at 3:44 AM, Dor Ben Dov <[email protected]> wrote:

> Barry,
>
> Can you open a jira issue to file this problem, maybe with Gal's details
> mentioned below ?
>
> Dor
>
> -----Original Message-----
> From: Gal Palmery
> Sent: יום ד 01 יוני 2016 09:17
> To: [email protected]
> Cc: geode ([email protected])
> Subject: RE: Async queue mechanism
>
> Thanks a lot Barry!
> Can you pls share the quick explanation about the fix?
>
> From: Barry Oglesby [mailto:[email protected]]
> Sent: Wednesday, June 01, 2016 03:44
> To: [email protected]
> Cc: geode ([email protected])
> Subject: Re: Async queue mechanism
>
> I see the issue. It looks like a merge issue. I have a fix that I'll check
> in in the next day or so.
>
> Thanks,
> Barry Oglesby
>
>
> On Tue, May 31, 2016 at 12:52 PM, Barry Oglesby <[email protected]
> <mailto:[email protected]>> wrote:
> I see this same behavior. I'll look into it a bit more and let you know
> what I find.
>
> Thanks,
> Barry Oglesby
>
>
> On Sun, May 29, 2016 at 5:38 AM, Gal Palmery <[email protected]
> <mailto:[email protected]>> wrote:
> +Adding the dev group
>
> Thanks,
> Gal
>
> From: Gal Palmery
> Sent: Sunday, May 29, 2016 15:30
> To: [email protected]<mailto:[email protected]
> >
> Subject: Async queue mechanism
>
> Hi,
>
> We are using the Async queue mechanism when inserting objects into the
> regions, which is defined as follows:
> <async-event-queue id="myQueue" persistent="false" parallel="true"
> batch-size="10"
>    disk-store-name="queue-overflow" maximum-queue-memory="256">
>                 <gateway-event-filter>
>
> <class-name>imdg.listeners.myClassFilter</class-name>
>                 </gateway-event-filter>
>                 < >
>
> <class-name>imdg.listeners.myClassSubstitutionFilter</class-name>
>                 </gateway-event-substitution-filter>
>                 <async-event-listener>
>
> <class-name>imdg.listeners.myClassListener</class-name>
>                 </async-event-listener>
> </async-event-queue>
>
> In gemfire version 8.2,these were the steps for inserting the object to
> the queue :
>
> ·         SubstitutionFilter : we are taking the required objects from the
> event object and return them as the result to the filter.
>
> ·         Filter: beforeEnqueue method is invoked and it’s decided if the
> object will be passed to the listener. (In our filter classes - if the
> object is null we are not sending it to the listener)
>
> ·         Listener: gets the de-serialized value, processes it puts it in
> the relevant regions.
>
> Seems like in geode we are not passing through beforeEnqueue method in the
> Fillter step, and the null objects are not been filtered.
> This means that when there is no object to pass through the queue, still
> null will be passed, and in the listener code, when asking for the
> de-serialized value, we are getting also the null object, which results in
> a Null Pointer Exception.
>
> Was anything changed recently in the Async queue mechanism?
>
> Thanks,
> Gal
>
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