[GitHub] [openwhisk] bdoyle0182 opened a new issue, #5343: [New Scheduler] Scheduling Decision Maker Does Not Include Paused Containers In Count

[GitBox <gi...@apache.org>]

bdoyle0182 opened a new issue, #5343:
URL: https://github.com/apache/openwhisk/issues/5343

   The scheduling decision maker receives `QueueSnapshot` which passes in `existingContainerNumByNamespace` value of the `ContainerCounter` class. However this class only watches for live containers in etcd under the `whisk/namespace/${namespace}` prefix, but not containers that are marked `warmed` under `whisk/warmed/${namespace}` or otherwise known as paused in docker. It's common for action containers to go paused, this can lead to namespace overprovisioning up to double beyond the namespace concurrency limit if a burst of traffic comes when namespace limit is reached and all containers are paused, and suboptimal decision making for over creating containers. @style95 


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[GitHub] [openwhisk] style95 commented on issue #5343: [New Scheduler] Scheduling Decision Maker Does Not Include Paused Containers In Count

["style95 (via GitHub)" <gi...@apache.org>]

style95 commented on issue #5343:
URL: https://github.com/apache/openwhisk/issues/5343#issuecomment-1556009241

   The container manager always chooses warmed containers first to schedule activations.
   https://github.com/apache/openwhisk/blob/master/core/scheduler/src/main/scala/org/apache/openwhisk/core/scheduler/container/ContainerManager.scala#L158
   
   So there would be no overprovisioning but containers will be more quickly provisioned by them.
   


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