1 files changed, 0 insertions, 53 deletions
diff --git a/weed/storage/needle_map/btree_map.go b/weed/storage/needle_map/btree_map.go
deleted file mode 100644
index a26c5e068..000000000
--- a/weed/storage/needle_map/btree_map.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package needle_map
-
-import (
-	. "github.com/chrislusf/seaweedfs/weed/storage/types"
-	"github.com/google/btree"
-)
-
-//This map assumes mostly inserting increasing keys
-type BtreeMap struct {
-	tree *btree.BTree
-}
-
-func NewBtreeMap() *BtreeMap {
-	return &BtreeMap{
-		tree: btree.New(32),
-	}
-}
-
-func (cm *BtreeMap) Set(key NeedleId, offset Offset, size uint32) (oldOffset Offset, oldSize uint32) {
-	found := cm.tree.ReplaceOrInsert(NeedleValue{key, offset, size})
-	if found != nil {
-		old := found.(NeedleValue)
-		return old.Offset, old.Size
-	}
-	return
-}
-
-func (cm *BtreeMap) Delete(key NeedleId) (oldSize uint32) {
-	found := cm.tree.Delete(NeedleValue{key, Offset{}, 0})
-	if found != nil {
-		old := found.(NeedleValue)
-		return old.Size
-	}
-	return
-}
-func (cm *BtreeMap) Get(key NeedleId) (*NeedleValue, bool) {
-	found := cm.tree.Get(NeedleValue{key, Offset{}, 0})
-	if found != nil {
-		old := found.(NeedleValue)
-		return &old, true
-	}
-	return nil, false
-}
-
-// Visit visits all entries or stop if any error when visiting
-func (cm *BtreeMap) AscendingVisit(visit func(NeedleValue) error) (ret error) {
-	cm.tree.Ascend(func(item btree.Item) bool {
-		needle := item.(NeedleValue)
-		ret = visit(needle)
-		return ret == nil
-	})
-	return ret
-}