jihoonson commented on a change in pull request #10379:
URL: https://github.com/apache/druid/pull/10379#discussion_r489123722
##########
File path:
indexing-service/src/main/java/org/apache/druid/indexing/overlord/TaskRunner.java
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@@ -121,4 +121,17 @@ default TaskLocation getTaskLocation(String taskId)
* @return ScalingStats if the runner has an underlying resource which can
scale, Optional.absent() otherwise
*/
Optional<ScalingStats> getScalingStats();
+
+ /**
+ * APIs useful for emitting statistics for @TaskSlotCountStatsMonitor
+ */
+ long getTotalTaskSlotCount();
Review comment:
How about adding new interfaces such as `TaskSlotCountable` and
`WorkerCountable`? Then, we can avoid implementing unnecessary interfaces,
e.g., the new methods in `SingleThreadedBackgroundRunner`, by implementing
required interfaces only.
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