From 24c8e6bcb4f06c7cab1dec4bd44c0cd48f976c79 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Mon, 17 Aug 2020 10:03:34 -0700
Subject: [PATCH] minor optimization

---
 weed/filesys/meta_cache/meta_cache.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/weed/filesys/meta_cache/meta_cache.go b/weed/filesys/meta_cache/meta_cache.go
index edf329143..69a016c23 100644
--- a/weed/filesys/meta_cache/meta_cache.go
+++ b/weed/filesys/meta_cache/meta_cache.go
@@ -61,8 +61,13 @@ func (mc *MetaCache) AtomicUpdateEntry(ctx context.Context, oldPath util.FullPat
 	oldDir, _ := oldPath.DirAndName()
 	if mc.visitedBoundary.HasVisited(util.FullPath(oldDir)) {
 		if oldPath != "" {
-			if err := mc.actualStore.DeleteEntry(ctx, oldPath); err != nil {
-				return err
+			if oldPath == newEntry.FullPath {
+				// skip the unnecessary deletion
+				// leave the update to the following InsertEntry operation
+			} else {
+				if err := mc.actualStore.DeleteEntry(ctx, oldPath); err != nil {
+					return err
+				}
 			}
 		}
 	} else {