[GEODE-9074] CacheClientProxyStatistics messageQueueSize does not increase as events are added

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: client queues
• Labels: GeodeOperationAPI pull-request-available
• Assignee: Mario Ivanac
• Reporter: Darrel Schneider
• Created: 25/Mar/21 20:34
• Updated: 22/Jun/22 20:46
• Resolved: 17/Aug/21 20:13

Description

Something I observed is that while a subscription queue was "full" the default throttling caused geode to only add 10 events/sec to the queue. This makes sense. But what didn't make sense was that the messageQueueSize did not change by 10 events/sec even though, during this time, nothing was draining from the queue. Then when the draining finally started (because the CacheClientUpdater started running after a long register interest that had been blocking it) we saw a huge spike in messageQueueSize when we should have seen gradual growth.
In addition to improving messageQueueSize it would also be nice to have a gauge stat that shows how many threads are currently trying to add to the queue. The throttle logic can cause a large number of thread to be blocked.

Issue Links

• links to: GitHub Pull Request #6445