diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
index 854b35f82..9bf2df6ef 100644
--- a/weed/server/filer_server_handlers_write_autochunk.go
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -164,6 +164,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 	}
 
 	var entry *filer.Entry
+	var newChunks []*filer_pb.FileChunk
 	var mergedChunks []*filer_pb.FileChunk
 
 	isAppend := isAppend(r)
@@ -186,7 +187,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 			}
 			entry.FileSize += uint64(chunkOffset)
 		}
-		mergedChunks = append(entry.Chunks, fileChunks...)
+		newChunks = append(entry.Chunks, fileChunks...)
 
 		// TODO
 		if len(entry.Content) > 0 {
@@ -196,7 +197,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 
 	} else {
 		glog.V(4).Infoln("saving", path)
-		mergedChunks = fileChunks
+		newChunks = fileChunks
 		entry = &filer.Entry{
 			FullPath: util.FullPath(path),
 			Attr: filer.Attr{
@@ -217,6 +218,13 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 		}
 	}
 
+	// maybe concatenate small chunks into one whole chunk
+	mergedChunks, replyerr = fs.maybeMergeChunks(so, newChunks)
+	if replyerr != nil {
+		glog.V(0).Infof("merge chunks %s: %v", r.RequestURI, replyerr)
+		mergedChunks = newChunks
+	}
+
 	// maybe compact entry chunks
 	mergedChunks, replyerr = filer.MaybeManifestize(fs.saveAsChunk(so), mergedChunks)
 	if replyerr != nil {
diff --git a/weed/server/filer_server_handlers_write_merge.go b/weed/server/filer_server_handlers_write_merge.go
new file mode 100644
index 000000000..dadc6f726
--- /dev/null
+++ b/weed/server/filer_server_handlers_write_merge.go
@@ -0,0 +1,11 @@
+package weed_server
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+)
+
+func (fs *FilerServer) maybeMergeChunks(so *operation.StorageOption, inputChunks []*filer_pb.FileChunk) (mergedChunks []*filer_pb.FileChunk, err error) {
+	//TODO merge consecutive smaller chunks into a large chunk to reduce number of chunks
+	return inputChunks, nil
+}