From 3a35632d586a9a12115ff7204db6e2b8ee855e15 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 4 Feb 2020 10:37:14 -0800
Subject: [PATCH] sync before closing file

merge changes from https://github.com/stlpmo-jn/seaweedfs/commit/1747fc2d523a42af6cade446c56317d840bd2c67
---
 weed/storage/needle_map_leveldb.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/weed/storage/needle_map_leveldb.go b/weed/storage/needle_map_leveldb.go
index ef8571e83..3bb258559 100644
--- a/weed/storage/needle_map_leveldb.go
+++ b/weed/storage/needle_map_leveldb.go
@@ -128,8 +128,17 @@ func (m *LevelDbNeedleMap) Delete(key NeedleId, offset Offset) error {
 }
 
 func (m *LevelDbNeedleMap) Close() {
-	m.indexFile.Close()
-	m.db.Close()
+	indexFileName := m.indexFile.Name()
+	if err := m.indexFile.Sync(); err != nil {
+		glog.Warningf("sync file %s failed: %v", indexFileName, err)
+	}
+	if err := m.indexFile.Close(); err != nil {
+		glog.Warningf("close index file %s failed: %v", indexFileName, err)
+	}
+
+	if err := m.db.Close(); err != nil {
+		glog.Warningf("close levelDB failed: %v", err)
+	}
 }
 
 func (m *LevelDbNeedleMap) Destroy() error {