jackjlli commented on a change in pull request #6502:
URL: https://github.com/apache/incubator-pinot/pull/6502#discussion_r566470241



##########
File path: 
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/minion/PinotTaskManager.java
##########
@@ -220,6 +218,8 @@ private void updateCronTaskScheduler(String tableWithType, 
Map<String, String> t
         if (!taskToCronExpressionMap.containsKey(existingTaskType)) {
           try {
             _scheduledExecutorService.deleteJob(JobKey.jobKey(tableWithType, 
existingTaskType));
+            
_controllerMetrics.addMeteredTableValue(getCronJobName(tableWithType, 
existingTaskType),
+                ControllerMeter.CRON_SCHEDULER_JOB_SCHEDULED, -11L);

Review comment:
       What's the meaning of `-11L` here?

##########
File path: 
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/minion/CronJobScheduleJob.java
##########
@@ -42,11 +45,17 @@ public void execute(JobExecutionContext jobExecutionContext)
             .get(PinotTaskManager.LEAD_CONTROLLER_MANAGER_KEY);
     String table = jobExecutionContext.getJobDetail().getKey().getName();
     String taskType = jobExecutionContext.getJobDetail().getKey().getGroup();
+    
pinotTaskManager.getControllerMetrics().addMeteredTableValue(PinotTaskManager.getCronJobName(table,
 taskType),
+        ControllerMeter.CRON_SCHEDULER_JOB_TRIGGERED, 1);

Review comment:
       nit: use `1L` here

##########
File path: 
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/minion/PinotTaskManager.java
##########
@@ -290,6 +290,9 @@ private void scheduleJob(String tableWithType, String 
taskType, String cronExprS
               .build();
       try {
         _scheduledExecutorService.scheduleJob(jobDetail, trigger);
+        _controllerMetrics

Review comment:
       Might be good to log a message here?




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