From 8aa7a3dc091a70279974c7ec4e019e7010b530f2 Mon Sep 17 00:00:00 2001
From: Ted Yu <yuzhihong@gmail.com>
Date: Thu, 16 Jan 2020 17:34:45 -0800
Subject: [PATCH] mvcc: log error if tmpdb is not removed (#11523)

Co-authored-by: yutedz <54038175+yutedz@users.noreply.github.com>
---
 mvcc/backend/backend.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/mvcc/backend/backend.go b/mvcc/backend/backend.go
index c1a7ed75f..73a84020f 100644
--- a/mvcc/backend/backend.go
+++ b/mvcc/backend/backend.go
@@ -391,7 +391,13 @@ func (b *backend) defrag() error {
 	err = defragdb(b.db, tmpdb, defragLimit)
 	if err != nil {
 		tmpdb.Close()
-		os.RemoveAll(tmpdb.Path())
+		if rmErr := os.RemoveAll(tmpdb.Path()); rmErr != nil {
+			if b.lg != nil {
+				b.lg.Error("failed to remove dirs under tmpdb", zap.Error(rmErr))
+			} else {
+				plog.Errorf("failed to remove dirs under tmpdb (%s)", rmErr)
+			}
+		}
 		return err
 	}