Map event oddness 3.5.2 - 3.5.3 - possible bug?

Question

Hi Guys,
I’ve discovered some odd event behaviour as part of my work to upgrade Coherence from 3.5.2 to 3.5.3/465p2 and to the latest incubator patterns.
Much of our application is driven by a backing map listener attached to every cache. That feeds all regular events to an EventRouter router component to which we register subscriptions with MapEventFilters. In testing everything, I discovered that one element of functionality that relied on receiving a specific object update event had stopped working. On drilling in, I discovered the following.
No matter if the cache in question has a CacheStore or not (normally it would have a PublishingCacheStore but I removed to check this behaviour and verified that in JMX cache had PersistenceType=none), a put followed by an update, followed a further update would result in the second update producing an event with cause 'StoreCompleted'. This happens 100% of the time in our app. As our event router drops non-regular events, this gets filtered out. Bizarrely however, I have a CQC on the same cache and that does receive events correctly.
It’s really puzzling why a cache with no CacheStore would ever produce an event cause of StoreCompleted – looking at the underlying implementation, I see this is related to StoreDeco being removed between old and new values, and again I can't understand why these decorations would exist if no cache store is present.
This makes me think that 3.5.3 has changed some event behaviour internally such that the AbstractMultiplexingBackingMapListener no longer returns the correct result for cause. I checked the release notes and couldn’t see anything to this effect.
I added sysouts to the CQC and backing map listener and the annotated trace is below. Also the relevant sections of config.
If anyone has any ideas, I'd be very grateful.
Paul
<initial insert>
Cause=Regular List: LazyEventMap{AbstractMultiplexingBackingMapListener$LazyMapEvent{LocalCache inserted: key={ rawId=1032 associatedId=1032 }, value=...}}
<CQC created>
<Object updated>
Cause=Regular List: LazyEventMap{AbstractMultiplexingBackingMapListener$LazyMapEvent{LocalCache updated: key={ rawId=1032 associatedId=1032 }, old value=..., new value=...}}
CQC MapEvent{ReconnectableContinuousQueryCache updated: key={ rawId=761 associatedId=761 }, old value=..., new value=...}
<Get, update, put on object - I've also used an EntryProcessor to perform update - same result>
Cause=StoreCompleted List: LazyEventMap{AbstractMultiplexingBackingMapListener$LazyMapEvent{LocalCache updated: key={ rawId=1032 associatedId=1032 }, old value=..., new value=...}}
CQC MapEvent{ReconnectableContinuousQueryCache updated: key={ rawId=1032 associatedId=1032 }, old value=..., new value=...}
<cache-mapping>
               <cache-name>publishing-*</cache-name>
               <!--scheme-name>distributed-scheme-with-publishing-cachestore</scheme-name-->
            <scheme-name>distributed-identifiable-scheme</scheme-name>
               <init-params>
                  <init-param>
                        <param-name>local-scheme-name</param-name>
                         <param-value>eventsource-local-scheme</param-value>
                  </init-param>
                </init-params>
          </cache-mapping>
{code}
{code:xml}
          <distributed-scheme>
               <scheme-name>distributed-identifiable-scheme</scheme-name>
               <thread-count>5</thread-count>
               <backing-map-scheme>
                    <local-scheme>
                         <scheme-ref>binary-eventsource-local-scheme</scheme-ref>
                    </local-scheme>
               </backing-map-scheme>
            <autostart>true</autostart>
               <serializer>
                    <class-name>com.tangosol.io.pof.ConfigurablePofContext</class-name>
               </serializer>
          </distributed-scheme>
{code}
{code:xml}
<local-scheme>
  <scheme-name>binary-eventsource-local-scheme</scheme-name>
    <unit-calculator>BINARY</unit-calculator>
      <listener>
        <class-scheme>
        <class-name>com.core.cache.events.EventSourceBackingMapListener</class-name>
          <init-params>
            <init-param>
              <param-type> com.tangosol.net.BackingMapManagerContext</param-type>
              <param-value>{manager-context}</param-value>
            </init-param>
          </init-params>
        </class-scheme>
      </listener>     
{code}                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

Answer 1

Hi Paul,
This really seems like an issue that should opened as an SR at https://support.oracle.com.
Please let me know if you have any other questions.
Thanks,
-Dave