diff --git a/internal/datacoord/index_meta.go b/internal/datacoord/index_meta.go
index 982bd6769f..26ba99b804 100644
--- a/internal/datacoord/index_meta.go
+++ b/internal/datacoord/index_meta.go
@@ -519,12 +519,17 @@ func (m *indexMeta) GetSegmentIndexState(collID, segmentID UniqueID, indexID Uni
 	}
 
 	m.fieldIndexLock.RLock()
-	fieldIndexes, ok := m.indexes[collID]
+	fieldIndexesMap, ok := m.indexes[collID]
 	if !ok {
 		state.FailReason = fmt.Sprintf("collection not exist with ID: %d", collID)
 		m.fieldIndexLock.RUnlock()
 		return state
 	}
+	// Copy the map to avoid data race after releasing the lock
+	fieldIndexes := make(map[UniqueID]*model.Index, len(fieldIndexesMap))
+	for id, index := range fieldIndexesMap {
+		fieldIndexes[id] = index
+	}
 	m.fieldIndexLock.RUnlock()
 
 	indexes, ok := m.segmentIndexes.Get(segmentID)
@@ -551,11 +556,16 @@ func (m *indexMeta) GetSegmentIndexState(collID, segmentID UniqueID, indexID Uni
 
 func (m *indexMeta) GetIndexedSegments(collectionID int64, segmentIDs, fieldIDs []UniqueID) []int64 {
 	m.fieldIndexLock.RLock()
-	fieldIndexes, ok := m.indexes[collectionID]
+	fieldIndexesMap, ok := m.indexes[collectionID]
 	if !ok {
 		m.fieldIndexLock.RUnlock()
 		return nil
 	}
+	// Copy the map to avoid data race after releasing the lock
+	fieldIndexes := make(map[UniqueID]*model.Index, len(fieldIndexesMap))
+	for id, index := range fieldIndexesMap {
+		fieldIndexes[id] = index
+	}
 	m.fieldIndexLock.RUnlock()
 
 	fieldIDSet := typeutil.NewUniqueSet(fieldIDs...)
@@ -684,11 +694,16 @@ func (m *indexMeta) MarkIndexAsDeleted(ctx context.Context, collID UniqueID, ind
 
 func (m *indexMeta) IsUnIndexedSegment(collectionID UniqueID, segID UniqueID) bool {
 	m.fieldIndexLock.RLock()
-	fieldIndexes, ok := m.indexes[collectionID]
+	fieldIndexesMap, ok := m.indexes[collectionID]
 	if !ok {
 		m.fieldIndexLock.RUnlock()
 		return false
 	}
+	// Copy the map to avoid data race after releasing the lock
+	fieldIndexes := make(map[UniqueID]*model.Index, len(fieldIndexesMap))
+	for id, index := range fieldIndexesMap {
+		fieldIndexes[id] = index
+	}
 	m.fieldIndexLock.RUnlock()
 
 	// the segment should be unindexed status if the fieldIndexes is not nil
@@ -1189,12 +1204,17 @@ func (m *indexMeta) GetIndexJSON(collectionID int64) string {
 
 func (m *indexMeta) GetSegmentIndexedFields(collectionID UniqueID, segmentID UniqueID) (bool, []*metricsinfo.IndexedField) {
 	m.fieldIndexLock.RLock()
-	fieldIndexes, ok := m.indexes[collectionID]
+	fieldIndexesMap, ok := m.indexes[collectionID]
 	if !ok {
 		// the segment should be unindexed status if the collection has no indexes
 		m.fieldIndexLock.RUnlock()
 		return false, []*metricsinfo.IndexedField{}
 	}
+	// Copy the map to avoid data race after releasing the lock
+	fieldIndexes := make(map[UniqueID]*model.Index, len(fieldIndexesMap))
+	for id, index := range fieldIndexesMap {
+		fieldIndexes[id] = index
+	}
 	m.fieldIndexLock.RUnlock()
 
 	// the segment should be unindexed status if the segment indexes is not found