> On Apr 24, 2023, at 11:52 AM, Suresh, Subashree RTX
> <subashree.sur...@rtx.com.INVALID> wrote:
>
> Thanks Matt. Have few questions though
>
>
> 1. I see one of the queues dispatched is considerably higher than
> dequeueCount. Could you explain little more about the issue and what might
> be the underlying causes after running without issues all these years?
Most likely caused by consumer applications using a prefetch (Default is 1000)
and then closing before they acknowledge all messages that have been prefetched
for them.
> 2. My understanding, dequeued messages are already consumed by the
> consumers, dispatched are messages that are dequeued and inflight. How can we
> see if the messages are already prefetched and how does it cause to increase
> queue size??
Dispatched is the number of times a messages was sent inflight. So this covers
resends to consumers.
> 3. Does the bug exist in 5.15.5? Is it fixed only in 5.18.1? We are using
> activemq-5.17.2 in another application, should we switch that also too
> 5.18.1??
Most of the stats fixes were in later 5.15.x or 5.16.x. Going to 5.18.1 just
gets you current to latest patches, no sense doing anything in-between. 5.15.x
upgrades to 5.18.x really smooth. Just check the release notes. The only big
change off the top of my head is that networkConnectors
descreaseNetworkConsumers default value is now ’true’ instead of ‘false’.
Thanks,
Matt Pavlovich
