From 37e0fdc8247b3726c009ff9d88e39966f8438e3a Mon Sep 17 00:00:00 2001
From: Siying Dong <siying.d@fb.com>
Date: Tue, 17 Jul 2018 17:48:25 -0700
Subject: [PATCH] DBSSTTest.DeleteSchedulerMultipleDBPaths data race (#4146)

Summary:
Fix a minor data race in DBSSTTest.DeleteSchedulerMultipleDBPaths reported by TSAN
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4146

Differential Revision: D8880945

Pulled By: siying

fbshipit-source-id: 25c632f685757735c59ad4ff26b2f346a443a446
---
 db/db_sst_test.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/db/db_sst_test.cc b/db/db_sst_test.cc
index 2781c61bf..46dbd0d40 100644
--- a/db/db_sst_test.cc
+++ b/db/db_sst_test.cc
@@ -436,7 +436,7 @@ TEST_F(DBSSTTest, OpenDBWithExistingTrash) {
 // deleted from first db_path were deleted using DeleteScheduler and
 // files in the second path were not.
 TEST_F(DBSSTTest, DeleteSchedulerMultipleDBPaths) {
-  int bg_delete_file = 0;
+  std::atomic<int> bg_delete_file(0);
   rocksdb::SyncPoint::GetInstance()->SetCallBack(
       "DeleteScheduler::DeleteTrashFile:DeleteFile",
       [&](void* /*arg*/) { bg_delete_file++; });