it.agilelab.bigdata.wasp.consumers.spark.streaming.actor.pipegraph.State
PipegraphGuardian activated the pipegraph.
it is a safe state with no in-flight request, so we can compute if we should retry activation or go to materializing
PipegraphGuardian activated the pipegraph.
it is a safe state with no in-flight request, so we can compute if we should retry activation or go to materializing