bdoyle0182 commented on code in PR #5386:
URL: https://github.com/apache/openwhisk/pull/5386#discussion_r1128280547


##########
core/scheduler/src/main/scala/org/apache/openwhisk/core/scheduler/queue/MemoryQueue.scala:
##########
@@ -1201,6 +1207,13 @@ object MemoryQueue {
       logging.info(
         this,
         s"[$invocationNamespace:$action:$stateName] some activations are stale 
msg: ${queue.head.msg.activationId}.")
+      val currentTime = Instant.now.toEpochMilli
+      if (currentTime - lastActivationExecutedTime.get() > maxRetentionMs) {
+        MetricEmitter.emitGaugeMetric(
+          LoggingMarkers
+            .SCHEDULER_QUEUE_NOT_PROCESSING(invocationNamespace, 
action.asString, action.toStringWithoutVersion),

Review Comment:
   Okay I added an additional check that the time since last activation 
executed must also be greater than the action timeout since I think that's a 
fair case if the system is configured to support long running activations, you 
may still not want the queue retention time to also be that high



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