sinkv2(ticdc): add comment

pingcap · Sep 29, 2022 · 2cc30ae · 2cc30ae
1 parent bb7c70a
commit 2cc30ae
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/cdc/sinkv2/metrics/mq/metrics.go b/cdc/sinkv2/metrics/mq/metrics.go
@@ -24,8 +24,9 @@ var WorkerFlushDuration = prometheus.NewHistogramVec(
 		Namespace: "ticdc",
 		Subsystem: "sinkv2",
 		Name:      "mq_worker_flush_duration",
-		Help:      "Flush duration(s) for MQ worker.",
-		Buckets:   prometheus.ExponentialBuckets(0.001, 2, 20), // 1ms~1000s
+		Help: "Flush duration(s) for MQ worker. " +
+			"It contains the grouping, encoding, and asynchronous sending off a batch of data.",
+		Buckets: prometheus.ExponentialBuckets(0.001, 2, 20), // 1ms~1000s
 	}, []string{"namespace", "changefeed"})
 
 // InitMetrics registers all metrics in this file.