diff --git a/internal/datacoord/index_meta.go b/internal/datacoord/index_meta.go
index 6d004992bc..6762bee360 100644
--- a/internal/datacoord/index_meta.go
+++ b/internal/datacoord/index_meta.go
@@ -209,33 +209,31 @@ func (m *indexMeta) updateIndexTasksMetrics() {
 	m.RLock()
 	defer m.RUnlock()
 
-	taskMetrics := make(map[UniqueID]map[commonpb.IndexState]int)
+	taskMetrics := make(map[indexpb.JobState]int)
 	for _, segIdx := range m.segmentBuildInfo.List() {
 		if segIdx.IsDeleted || !m.isIndexExist(segIdx.CollectionID, segIdx.IndexID) {
 			continue
 		}
-		if _, ok := taskMetrics[segIdx.CollectionID]; !ok {
-			taskMetrics[segIdx.CollectionID] = make(map[commonpb.IndexState]int)
-			taskMetrics[segIdx.CollectionID][commonpb.IndexState_Unissued] = 0
-			taskMetrics[segIdx.CollectionID][commonpb.IndexState_InProgress] = 0
-			taskMetrics[segIdx.CollectionID][commonpb.IndexState_Finished] = 0
-			taskMetrics[segIdx.CollectionID][commonpb.IndexState_Failed] = 0
+
+		switch segIdx.IndexState {
+		case commonpb.IndexState_IndexStateNone:
+			taskMetrics[indexpb.JobState_JobStateNone]++
+		case commonpb.IndexState_Unissued:
+			taskMetrics[indexpb.JobState_JobStateInit]++
+		case commonpb.IndexState_InProgress:
+			taskMetrics[indexpb.JobState_JobStateInProgress]++
+		case commonpb.IndexState_Finished:
+			taskMetrics[indexpb.JobState_JobStateFinished]++
+		case commonpb.IndexState_Failed:
+			taskMetrics[indexpb.JobState_JobStateFailed]++
+		case commonpb.IndexState_Retry:
+			taskMetrics[indexpb.JobState_JobStateRetry]++
 		}
-		taskMetrics[segIdx.CollectionID][segIdx.IndexState]++
 	}
-	for collID, m := range taskMetrics {
-		for k, v := range m {
-			switch k {
-			case commonpb.IndexState_Unissued:
-				metrics.IndexTaskNum.WithLabelValues(strconv.FormatInt(collID, 10), metrics.UnissuedIndexTaskLabel).Set(float64(v))
-			case commonpb.IndexState_InProgress:
-				metrics.IndexTaskNum.WithLabelValues(strconv.FormatInt(collID, 10), metrics.InProgressIndexTaskLabel).Set(float64(v))
-			case commonpb.IndexState_Finished:
-				metrics.IndexTaskNum.WithLabelValues(strconv.FormatInt(collID, 10), metrics.FinishedIndexTaskLabel).Set(float64(v))
-			case commonpb.IndexState_Failed:
-				metrics.IndexTaskNum.WithLabelValues(strconv.FormatInt(collID, 10), metrics.FailedIndexTaskLabel).Set(float64(v))
-			}
-		}
+
+	jobType := indexpb.JobType_JobTypeIndexJob.String()
+	for k, v := range taskMetrics {
+		metrics.TaskNum.WithLabelValues(jobType, k.String()).Set(float64(v))
 	}
 	log.Ctx(m.ctx).Info("update index metric", zap.Int("collectionNum", len(taskMetrics)))
 }
@@ -904,10 +902,7 @@ func (m *indexMeta) SetStoredIndexFileSizeMetric(collections map[UniqueID]*colle
 	return total
 }
 
-func (m *indexMeta) RemoveSegmentIndex(ctx context.Context, collID, partID, segID, indexID, buildID UniqueID) error {
-	m.Lock()
-	defer m.Unlock()
-
+func (m *indexMeta) removeSegmentIndex(ctx context.Context, collID, partID, segID, indexID, buildID UniqueID) error {
 	err := m.catalog.DropSegmentIndex(ctx, collID, partID, segID, buildID)
 	if err != nil {
 		return err
@@ -925,6 +920,25 @@ func (m *indexMeta) RemoveSegmentIndex(ctx context.Context, collID, partID, segI
 	return nil
 }
 
+func (m *indexMeta) RemoveSegmentIndex(ctx context.Context, collID, partID, segID, indexID, buildID UniqueID) error {
+	m.Lock()
+	defer m.Unlock()
+
+	return m.removeSegmentIndex(ctx, collID, partID, segID, indexID, buildID)
+}
+
+func (m *indexMeta) RemoveSegmentIndexByID(ctx context.Context, buildID UniqueID) error {
+	m.Lock()
+	defer m.Unlock()
+
+	segIdx, ok := m.segmentBuildInfo.Get(buildID)
+	if !ok {
+		return nil
+	}
+
+	return m.removeSegmentIndex(ctx, segIdx.CollectionID, segIdx.PartitionID, segIdx.SegmentID, segIdx.IndexID, buildID)
+}
+
 func (m *indexMeta) GetDeletedIndexes() []*model.Index {
 	m.RLock()
 	defer m.RUnlock()
diff --git a/internal/datacoord/index_meta_test.go b/internal/datacoord/index_meta_test.go
index 6f75b1c2a7..d8ffca36b8 100644
--- a/internal/datacoord/index_meta_test.go
+++ b/internal/datacoord/index_meta_test.go
@@ -1505,6 +1505,57 @@ func TestRemoveSegmentIndex(t *testing.T) {
 	})
 }
 
+func TestRemoveSegmentIndexByID(t *testing.T) {
+	t.Run("drop segment index fail", func(t *testing.T) {
+		expectedErr := errors.New("error")
+		catalog := catalogmocks.NewDataCoordCatalog(t)
+		catalog.EXPECT().
+			DropSegmentIndex(mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+			Return(expectedErr)
+
+		catalog.EXPECT().CreateSegmentIndex(mock.Anything, mock.Anything).Return(nil)
+
+		m := newSegmentIndexMeta(catalog)
+		err := m.AddSegmentIndex(context.TODO(), &model.SegmentIndex{
+			SegmentID:    3,
+			CollectionID: 1,
+			PartitionID:  2,
+			NumRows:      1024,
+			IndexID:      1,
+			BuildID:      4,
+		})
+		assert.NoError(t, err)
+		err = m.RemoveSegmentIndexByID(context.TODO(), 4)
+		assert.Error(t, err)
+		assert.EqualError(t, err, "error")
+	})
+
+	t.Run("remove segment index ok", func(t *testing.T) {
+		catalog := catalogmocks.NewDataCoordCatalog(t)
+		catalog.EXPECT().
+			DropSegmentIndex(mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything).
+			Return(nil)
+
+		catalog.EXPECT().CreateSegmentIndex(mock.Anything, mock.Anything).Return(nil)
+
+		m := newSegmentIndexMeta(catalog)
+		err := m.AddSegmentIndex(context.TODO(), &model.SegmentIndex{
+			SegmentID:    3,
+			CollectionID: 1,
+			PartitionID:  2,
+			NumRows:      1024,
+			IndexID:      1,
+			BuildID:      4,
+		})
+		assert.NoError(t, err)
+
+		err = m.RemoveSegmentIndexByID(context.TODO(), 4)
+		assert.NoError(t, err)
+		assert.Equal(t, len(m.segmentIndexes), 0)
+		assert.Equal(t, len(m.segmentBuildInfo.List()), 0)
+	})
+}
+
 func TestIndexMeta_GetUnindexedSegments(t *testing.T) {
 	catalog := &datacoord.Catalog{MetaKv: mockkv.NewMetaKv(t)}
 	m := createMeta(catalog, withIndexMeta(createIndexMeta(catalog)))
diff --git a/internal/datacoord/stats_task_meta.go b/internal/datacoord/stats_task_meta.go
index 349a6ffc07..2b2f3c26fe 100644
--- a/internal/datacoord/stats_task_meta.go
+++ b/internal/datacoord/stats_task_meta.go
@@ -19,7 +19,6 @@ package datacoord
 import (
 	"context"
 	"fmt"
-	"strconv"
 	"sync"
 
 	"go.uber.org/zap"
@@ -76,25 +75,14 @@ func (stm *statsTaskMeta) updateMetrics() {
 	stm.RLock()
 	defer stm.RUnlock()
 
-	taskMetrics := make(map[UniqueID]map[indexpb.JobState]int)
+	taskMetrics := make(map[indexpb.JobState]int)
 	for _, t := range stm.tasks {
-		if _, ok := taskMetrics[t.GetCollectionID()]; !ok {
-			taskMetrics[t.GetCollectionID()] = make(map[indexpb.JobState]int)
-			taskMetrics[t.GetCollectionID()][indexpb.JobState_JobStateNone] = 0
-			taskMetrics[t.GetCollectionID()][indexpb.JobState_JobStateInit] = 0
-			taskMetrics[t.GetCollectionID()][indexpb.JobState_JobStateInProgress] = 0
-			taskMetrics[t.GetCollectionID()][indexpb.JobState_JobStateFinished] = 0
-			taskMetrics[t.GetCollectionID()][indexpb.JobState_JobStateFailed] = 0
-			taskMetrics[t.GetCollectionID()][indexpb.JobState_JobStateRetry] = 0
-		}
-		taskMetrics[t.GetCollectionID()][t.GetState()]++
+		taskMetrics[t.GetState()]++
 	}
 
 	jobType := indexpb.JobType_JobTypeStatsJob.String()
-	for collID, m := range taskMetrics {
-		for k, v := range m {
-			metrics.TaskNum.WithLabelValues(strconv.FormatInt(collID, 10), jobType, k.String()).Set(float64(v))
-		}
+	for k, v := range taskMetrics {
+		metrics.TaskNum.WithLabelValues(jobType, k.String()).Set(float64(v))
 	}
 }
 
diff --git a/internal/datacoord/task_analyze.go b/internal/datacoord/task_analyze.go
index 8d588b47fa..0da89728ae 100644
--- a/internal/datacoord/task_analyze.go
+++ b/internal/datacoord/task_analyze.go
@@ -277,14 +277,17 @@ func (at *analyzeTask) QueryResult(ctx context.Context, client types.IndexNodeCl
 	// infos length is always one.
 	for _, result := range resp.GetAnalyzeJobResults().GetResults() {
 		if result.GetTaskID() == at.GetTaskID() {
-			log.Ctx(ctx).Info("query analysis task info successfully",
-				zap.Int64("taskID", at.GetTaskID()), zap.String("result state", result.GetState().String()),
-				zap.String("failReason", result.GetFailReason()))
 			if result.GetState() == indexpb.JobState_JobStateFinished || result.GetState() == indexpb.JobState_JobStateFailed ||
 				result.GetState() == indexpb.JobState_JobStateRetry {
+				log.Ctx(ctx).Info("query analysis task info successfully",
+					zap.Int64("taskID", at.GetTaskID()), zap.String("result state", result.GetState().String()),
+					zap.String("failReason", result.GetFailReason()))
 				// state is retry or finished or failed
 				at.setResult(result)
 			} else if result.GetState() == indexpb.JobState_JobStateNone {
+				log.Ctx(ctx).Info("query analysis task info successfully",
+					zap.Int64("taskID", at.GetTaskID()), zap.String("result state", result.GetState().String()),
+					zap.String("failReason", result.GetFailReason()))
 				at.SetState(indexpb.JobState_JobStateRetry, "analyze task state is none in info response")
 			}
 			// inProgress or unissued/init, keep InProgress state
@@ -320,3 +323,7 @@ func (at *analyzeTask) DropTaskOnWorker(ctx context.Context, client types.IndexN
 func (at *analyzeTask) SetJobInfo(meta *meta) error {
 	return meta.analyzeMeta.FinishTask(at.GetTaskID(), at.taskInfo)
 }
+
+func (at *analyzeTask) DropTaskMeta(ctx context.Context, meta *meta) error {
+	return meta.analyzeMeta.DropAnalyzeTask(ctx, at.GetTaskID())
+}
diff --git a/internal/datacoord/task_index.go b/internal/datacoord/task_index.go
index 9458356367..fb10a0273f 100644
--- a/internal/datacoord/task_index.go
+++ b/internal/datacoord/task_index.go
@@ -317,14 +317,17 @@ func (it *indexBuildTask) QueryResult(ctx context.Context, node types.IndexNodeC
 	// indexInfos length is always one.
 	for _, info := range resp.GetIndexJobResults().GetResults() {
 		if info.GetBuildID() == it.GetTaskID() {
-			log.Ctx(ctx).Info("query task index info successfully",
-				zap.Int64("taskID", it.GetTaskID()), zap.String("result state", info.GetState().String()),
-				zap.String("failReason", info.GetFailReason()))
 			if info.GetState() == commonpb.IndexState_Finished || info.GetState() == commonpb.IndexState_Failed ||
 				info.GetState() == commonpb.IndexState_Retry {
+				log.Ctx(ctx).Info("query task index info successfully",
+					zap.Int64("taskID", it.GetTaskID()), zap.String("result state", info.GetState().String()),
+					zap.String("failReason", info.GetFailReason()))
 				// state is retry or finished or failed
 				it.setResult(info)
 			} else if info.GetState() == commonpb.IndexState_IndexStateNone {
+				log.Ctx(ctx).Info("query task index info successfully",
+					zap.Int64("taskID", it.GetTaskID()), zap.String("result state", info.GetState().String()),
+					zap.String("failReason", info.GetFailReason()))
 				it.SetState(indexpb.JobState_JobStateRetry, "index state is none in info response")
 			}
 			// inProgress or unissued, keep InProgress state
@@ -358,3 +361,7 @@ func (it *indexBuildTask) DropTaskOnWorker(ctx context.Context, client types.Ind
 func (it *indexBuildTask) SetJobInfo(meta *meta) error {
 	return meta.indexMeta.FinishTask(it.taskInfo)
 }
+
+func (it *indexBuildTask) DropTaskMeta(ctx context.Context, meta *meta) error {
+	return meta.indexMeta.RemoveSegmentIndexByID(ctx, it.taskID)
+}
diff --git a/internal/datacoord/task_scheduler.go b/internal/datacoord/task_scheduler.go
index d2ed08e2e1..e56a8dad26 100644
--- a/internal/datacoord/task_scheduler.go
+++ b/internal/datacoord/task_scheduler.go
@@ -125,6 +125,10 @@ func (s *taskScheduler) reloadFromMeta() {
 					State:      segIndex.IndexState,
 					FailReason: segIndex.FailReason,
 				},
+				req: &workerpb.CreateJobRequest{
+					ClusterID: Params.CommonCfg.ClusterPrefix.GetValue(),
+					BuildID:   segIndex.BuildID,
+				},
 				queueTime: time.Now(),
 				startTime: time.Now(),
 				endTime:   time.Now(),
@@ -150,6 +154,10 @@ func (s *taskScheduler) reloadFromMeta() {
 				State:      t.State,
 				FailReason: t.FailReason,
 			},
+			req: &workerpb.AnalyzeRequest{
+				ClusterID: Params.CommonCfg.ClusterPrefix.GetValue(),
+				TaskID:    taskID,
+			},
 			queueTime: time.Now(),
 			startTime: time.Now(),
 			endTime:   time.Now(),
@@ -176,6 +184,10 @@ func (s *taskScheduler) reloadFromMeta() {
 				State:      t.GetState(),
 				FailReason: t.GetFailReason(),
 			},
+			req: &workerpb.CreateStatsRequest{
+				ClusterID: Params.CommonCfg.ClusterPrefix.GetValue(),
+				TaskID:    taskID,
+			},
 			queueTime:  time.Now(),
 			startTime:  time.Now(),
 			endTime:    time.Now(),
@@ -333,6 +345,9 @@ func (s *taskScheduler) checkProcessingTasks() {
 	}
 	s.runningQueueLock.RUnlock()
 
+	if len(runningTaskIDs) <= 0 {
+		return
+	}
 	log.Ctx(s.ctx).Info("check running tasks", zap.Int("runningTask num", len(runningTaskIDs)))
 
 	var wg sync.WaitGroup
@@ -410,7 +425,9 @@ func (s *taskScheduler) run() {
 
 			switch task.GetState() {
 			case indexpb.JobState_JobStateNone:
-				return
+				if !s.processNone(task) {
+					s.pendingTasks.Push(task)
+				}
 			case indexpb.JobState_JobStateInit:
 				s.pendingTasks.Push(task)
 			default:
@@ -433,7 +450,7 @@ func (s *taskScheduler) process(task Task, nodeID int64) bool {
 
 	switch task.GetState() {
 	case indexpb.JobState_JobStateNone:
-		return true
+		return s.processNone(task)
 	case indexpb.JobState_JobStateInit:
 		return s.processInit(task, nodeID)
 	default:
@@ -577,6 +594,14 @@ func (s *taskScheduler) processInit(task Task, nodeID int64) bool {
 	return true
 }
 
+func (s *taskScheduler) processNone(task Task) bool {
+	if err := task.DropTaskMeta(s.ctx, s.meta); err != nil {
+		log.Ctx(s.ctx).Warn("set job info failed", zap.Error(err))
+		return false
+	}
+	return true
+}
+
 func (s *taskScheduler) processFinished(task Task) bool {
 	if err := task.SetJobInfo(s.meta); err != nil {
 		log.Ctx(s.ctx).Warn("update task info failed", zap.Error(err))
diff --git a/internal/datacoord/task_scheduler_test.go b/internal/datacoord/task_scheduler_test.go
index d2519195e2..1cebd680a6 100644
--- a/internal/datacoord/task_scheduler_test.go
+++ b/internal/datacoord/task_scheduler_test.go
@@ -783,6 +783,9 @@ func (s *taskSchedulerSuite) scheduler(handler Handler) {
 		})
 		return nil
 	})
+	catalog.EXPECT().DropSegmentIndex(mock.Anything, mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil).Maybe()
+	catalog.EXPECT().DropStatsTask(mock.Anything, mock.Anything).Return(nil).Maybe()
+	catalog.EXPECT().DropAnalyzeTask(mock.Anything, mock.Anything).Return(nil).Maybe()
 	catalog.EXPECT().AlterSegmentIndexes(mock.Anything, mock.Anything).Return(nil)
 	// catalog.EXPECT().SaveStatsTask(mock.Anything, mock.Anything).Return(nil)
 
@@ -951,10 +954,9 @@ func (s *taskSchedulerSuite) scheduler(handler Handler) {
 	indexJob, exist = mt.indexMeta.GetIndexJob(buildID + 8)
 	s.True(exist)
 	s.Equal(commonpb.IndexState_Finished, indexJob.IndexState)
-	indexJob, exist = mt.indexMeta.GetIndexJob(buildID + 9)
-	s.True(exist)
-	// segment not healthy, wait for GC
-	s.Equal(commonpb.IndexState_Unissued, indexJob.IndexState)
+	_, exist = mt.indexMeta.GetIndexJob(buildID + 9)
+	s.False(exist)
+	// segment not healthy, remove task
 	indexJob, exist = mt.indexMeta.GetIndexJob(buildID + 10)
 	s.True(exist)
 	s.Equal(commonpb.IndexState_Finished, indexJob.IndexState)
diff --git a/internal/datacoord/task_stats.go b/internal/datacoord/task_stats.go
index 846aa7f4c4..ecfa316a33 100644
--- a/internal/datacoord/task_stats.go
+++ b/internal/datacoord/task_stats.go
@@ -283,13 +283,16 @@ func (st *statsTask) QueryResult(ctx context.Context, client types.IndexNodeClie
 
 	for _, result := range resp.GetStatsJobResults().GetResults() {
 		if result.GetTaskID() == st.GetTaskID() {
-			log.Ctx(ctx).Info("query stats task result success", zap.Int64("taskID", st.GetTaskID()),
-				zap.Int64("segmentID", st.segmentID), zap.String("result state", result.GetState().String()),
-				zap.String("failReason", result.GetFailReason()))
 			if result.GetState() == indexpb.JobState_JobStateFinished || result.GetState() == indexpb.JobState_JobStateRetry ||
 				result.GetState() == indexpb.JobState_JobStateFailed {
+				log.Ctx(ctx).Info("query stats task result success", zap.Int64("taskID", st.GetTaskID()),
+					zap.Int64("segmentID", st.segmentID), zap.String("result state", result.GetState().String()),
+					zap.String("failReason", result.GetFailReason()))
 				st.setResult(result)
 			} else if result.GetState() == indexpb.JobState_JobStateNone {
+				log.Ctx(ctx).Info("query stats task result success", zap.Int64("taskID", st.GetTaskID()),
+					zap.Int64("segmentID", st.segmentID), zap.String("result state", result.GetState().String()),
+					zap.String("failReason", result.GetFailReason()))
 				st.SetState(indexpb.JobState_JobStateRetry, "stats task state is none in info response")
 			}
 			// inProgress or unissued/init, keep InProgress state
@@ -367,3 +370,12 @@ func (st *statsTask) SetJobInfo(meta *meta) error {
 		zap.String("subJobType", st.subJobType.String()), zap.String("state", st.taskInfo.GetState().String()))
 	return nil
 }
+
+func (st *statsTask) DropTaskMeta(ctx context.Context, meta *meta) error {
+	if err := meta.statsTaskMeta.DropStatsTask(st.taskID); err != nil {
+		log.Ctx(ctx).Warn("drop stats task failed", zap.Int64("taskID", st.taskID), zap.Error(err))
+		return err
+	}
+	log.Ctx(ctx).Info("drop stats task success", zap.Int64("taskID", st.taskID))
+	return nil
+}
diff --git a/internal/datacoord/types.go b/internal/datacoord/types.go
index b0a4200a83..d11a237214 100644
--- a/internal/datacoord/types.go
+++ b/internal/datacoord/types.go
@@ -46,4 +46,5 @@ type Task interface {
 	SetEndTime(time.Time)
 	GetEndTime() time.Time
 	GetTaskType() string
+	DropTaskMeta(ctx context.Context, meta *meta) error
 }
diff --git a/pkg/metrics/datacoord_metrics.go b/pkg/metrics/datacoord_metrics.go
index 8513bf6fe5..8d2490611f 100644
--- a/pkg/metrics/datacoord_metrics.go
+++ b/pkg/metrics/datacoord_metrics.go
@@ -310,6 +310,7 @@ var (
 		}, []string{statusLabelName})
 
 	// IndexTaskNum records the number of index tasks of each type.
+	// Deprecated: please ues TaskNum after v2.5.5.
 	IndexTaskNum = prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{
 			Namespace: milvusNamespace,
@@ -343,7 +344,7 @@ var (
 			Help:      "latency of task execute operation",
 			Buckets:   longTaskBuckets,
 		}, []string{
-			taskTypeLabel,
+			TaskTypeLabel,
 			statusLabelName,
 		})
 
@@ -354,7 +355,7 @@ var (
 			Subsystem: typeutil.DataCoordRole,
 			Name:      "task_count",
 			Help:      "number of index tasks of each type",
-		}, []string{collectionIDLabelName, taskTypeLabel, taskStateLabel})
+		}, []string{TaskTypeLabel, TaskStateLabel})
 )
 
 // RegisterDataCoord registers DataCoord metrics
diff --git a/pkg/metrics/metrics.go b/pkg/metrics/metrics.go
index 767c3e654b..84de95fcef 100644
--- a/pkg/metrics/metrics.go
+++ b/pkg/metrics/metrics.go
@@ -131,8 +131,8 @@ const (
 	LoadedLabel         = "loaded"
 	NumEntitiesAllLabel = "all"
 
-	taskTypeLabel  = "task_type"
-	taskStateLabel = "task_state"
+	TaskTypeLabel  = "task_type"
+	TaskStateLabel = "task_state"
 )
 
 var (
diff --git a/pkg/metrics/proxy_metrics.go b/pkg/metrics/proxy_metrics.go
index 9a404d024c..2d88fac37d 100644
--- a/pkg/metrics/proxy_metrics.go
+++ b/pkg/metrics/proxy_metrics.go
@@ -444,7 +444,7 @@ var (
 			Subsystem: typeutil.ProxyRole,
 			Name:      "queue_task_num",
 			Help:      "",
-		}, []string{nodeIDLabelName, queueTypeLabelName, taskStateLabel})
+		}, []string{nodeIDLabelName, queueTypeLabelName, TaskStateLabel})
 )
 
 // RegisterProxy registers Proxy metrics
diff --git a/pkg/metrics/querycoord_metrics.go b/pkg/metrics/querycoord_metrics.go
index b1c0a9853f..c15bebb3b2 100644
--- a/pkg/metrics/querycoord_metrics.go
+++ b/pkg/metrics/querycoord_metrics.go
@@ -132,7 +132,7 @@ var (
 			Name:      "task_latency",
 			Help:      "latency of all kind of task in query coord scheduler scheduler",
 			Buckets:   longTaskBuckets,
-		}, []string{collectionIDLabelName, taskTypeLabel, channelNameLabelName})
+		}, []string{collectionIDLabelName, TaskTypeLabel, channelNameLabelName})
 
 	QueryCoordResourceGroupInfo = prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{