1 files changed, 0 insertions, 13 deletions
diff --git a/weed/storage/needle_map_memory.go b/weed/storage/needle_map_memory.go
index ee639a7e6..e4273f1b2 100644
--- a/weed/storage/needle_map_memory.go
+++ b/weed/storage/needle_map_memory.go
@@ -22,24 +22,11 @@ func NewCompactNeedleMap(file *os.File) *NeedleMap {
 	return nm
 }
 
-func NewBtreeNeedleMap(file *os.File) *NeedleMap {
-	nm := &NeedleMap{
-		m: needle_map.NewBtreeMap(),
-	}
-	nm.indexFile = file
-	return nm
-}
-
 func LoadCompactNeedleMap(file *os.File) (*NeedleMap, error) {
 	nm := NewCompactNeedleMap(file)
 	return doLoading(file, nm)
 }
 
-func LoadBtreeNeedleMap(file *os.File) (*NeedleMap, error) {
-	nm := NewBtreeNeedleMap(file)
-	return doLoading(file, nm)
-}
-
 func doLoading(file *os.File, nm *NeedleMap) (*NeedleMap, error) {
 	e := idx.WalkIndexFile(file, func(key NeedleId, offset Offset, size uint32) error {
 		nm.MaybeSetMaxFileKey(key)