snleee commented on code in PR #10026:
URL: https://github.com/apache/pinot/pull/10026#discussion_r1055977814
##########
pinot-common/src/main/java/org/apache/pinot/common/metrics/ControllerGauge.java:
##########
@@ -53,6 +53,8 @@ public enum ControllerGauge implements AbstractMetrics.Gauge {
DISABLED_TABLE_COUNT("TableCount", true),
PERIODIC_TASK_NUM_TABLES_PROCESSED("PeriodicTaskNumTablesProcessed", true),
TIME_MS_SINCE_LAST_MINION_TASK_METADATA_UPDATE("TimeMsSinceLastMinionTaskMetadataUpdate",
false),
+
TIME_MS_SINCE_LAST_SUCCESSFUL_MINION_TASK_GENERATION("TimeMsSinceLastSuccessfulMinionTaskGeneration",
false),
+
LAST_MINION_TASK_GENERATION_ENCOUNTERS_ERROR("LastMinionTaskGenerationEncountersError",
false),
Review Comment:
What's the main goal of this event? We are trying to indicate that at
certain time we had the issue with the task generation? I think that many
existing error related metrics (query error, llc commit error etc) are being
emitted as meter. Have you considered both?
I think that the main difference is that
- Gauge will show 1 from the time that we had the error until the next
successful run.
- Meter will show one spike in the graph and each spike will indicate the
unsuccessful run.
##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/minion/PinotTaskManager.java:
##########
@@ -541,20 +541,35 @@ private String scheduleTask(PinotTaskGenerator
taskGenerator, List<TableConfig>
generateTasks() return a list of TaskGeneratorMostRecentRunInfo for
each table
*/
pinotTaskConfigs = taskGenerator.generateTasks(enabledTableConfigs);
+ long successRunTs = System.currentTimeMillis();
Review Comment:
What does `Ts` stands for? `TaskSchedule`? Let's just use the full name for
clarity.
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