Metrics

Stateful Functions includes a number of SDK specific metrics. Along with the standard metric scopes, Stateful Functions supports Function Scope which one level below operator scope.

metrics.scope.function

Default: <host>.taskmanager.<tm_id>.<job_name>.<operator_name>.<subtask_index>.<function_namespace>.<function_name>
Applied to all metrics that were scoped to a function.

Metrics	Scope	Description	Type
in	Function	The number of incoming messages.	Counter
inRate	Function	The average number of incoming messages per second.	Meter
out-local	Function	The number of messages sent to a function on the same task slot.	Counter
out-localRate	Function	The average number of messages sent to a function on the same task slot per second.	Meter
out-remote	Function	The number of messages sent to a function on a different task slot.	Counter
out-remoteRate	Function	The average number of messages sent to a function on a different task slot per second.	Meter
out-egress	Function	The number of messages sent to an egress.	Counter
feedback.produced	Operator	The number of messages read from the feedback channel.	Meter
feedback.producedRate	Operator	The average number of messages read from the feedback channel per second.	Meter