From 5af651db24beffa019a0721e3e57b001e2275e21 Mon Sep 17 00:00:00 2001
From: Aaron Gao <gzh@fb.com>
Date: Wed, 19 Oct 2016 13:37:51 -0700
Subject: [PATCH] fix data race in compact_files_test

Summary: fix data race

Test Plan: compact_files_test

Reviewers: sdong, yiwu, andrewkr

Reviewed By: andrewkr

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D65259
---
 db/compact_files_test.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/db/compact_files_test.cc b/db/compact_files_test.cc
index 8f046d14e..051cca8a4 100644
--- a/db/compact_files_test.cc
+++ b/db/compact_files_test.cc
@@ -50,7 +50,10 @@ class FlushedFileCollector : public EventListener {
     }
     return result;
   }
-  void ClearFlushedFiles() { flushed_files_.clear(); }
+  void ClearFlushedFiles() {
+    std::lock_guard<std::mutex> lock(mutex_);
+    flushed_files_.clear();
+  }
 
  private:
   std::vector<std::string> flushed_files_;