Some questions about Invoker. about openwhisk HOT 1 OPEN

The Invoker is a component that is responsible for receiving requests from the OpenWhisk API and dispatching them to the appropriate function containers. It does not have a queue system like Kafka inside.
The error that you encountered is likely due to the fact that the function containers were running at full capacity. This can happen if there are too many requests being sent to the OpenWhisk API, or if the function containers are not being scaled up to meet the demand.
In the K8s-helm deployment mode, you can set the number of function containers that are created by using the replicas property in the openwhisk-invoker chart. You can also set the maximum number of requests that can be queued by using the queue-size property.
If you are still experiencing errors, you may need to increase the number of function containers or the queue size. You can also try to scale up the function containers automatically by using a tool like Kubernetes Horizontal Pod Autoscaler (HPA).

from openwhisk.