Make binlog size metric to collect healthy binlog only (#24558)

Signed-off-by: Nbigsheeper <yihao.dai@zilliz.com>

internal/datacoord/meta.go

@@ -251,9 +251,9 @@ func (m *meta) GetCollectionBinlogSize() (int64, map[UniqueID]int64) {
 		if isSegmentHealthy(segment) {
 			total += segmentSize
 			collectionBinlogSize[segment.GetCollectionID()] += segmentSize
+			metrics.DataCoordStoredBinlogSize.WithLabelValues(
+				fmt.Sprint(segment.GetCollectionID()), fmt.Sprint(segment.GetID())).Set(float64(segmentSize))
 		}
-		metrics.DataCoordStoredBinlogSize.WithLabelValues(
-			fmt.Sprint(segment.GetCollectionID()), fmt.Sprint(segment.GetID())).Set(float64(segmentSize))
 	}
 	return total, collectionBinlogSize
 }

internal/metrics/datacoord_metrics.go

@@ -95,7 +95,7 @@ var (
 			Namespace: milvusNamespace,
 			Subsystem: typeutil.DataCoordRole,
 			Name:      "stored_binlog_size",
-			Help:      "binlog size of segments",
+			Help:      "binlog size of healthy segments",
 		}, []string{
 			collectionIDLabelName,
 			segmentIDLabelName,