From ce2c49899d380ad92f49a0e669579eb8f1ad802d Mon Sep 17 00:00:00 2001
From: John Sully <john@csquare.ca>
Date: Wed, 10 Nov 2021 05:29:13 +0000
Subject: [PATCH] Fix snapshot count mismatch due to race

Former-commit-id: b4175c9bf82cbec047b94403e2a3700f4544b4f1
---
 src/storage/rocksdb.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/storage/rocksdb.cpp b/src/storage/rocksdb.cpp
index c947628d5..07f08e77c 100644
--- a/src/storage/rocksdb.cpp
+++ b/src/storage/rocksdb.cpp
@@ -170,6 +170,7 @@ bool RocksDBStorageProvider::enumerate(callback fn) const
 
 const IStorage *RocksDBStorageProvider::clone() const
 {
+    std::unique_lock<fastlock> l(m_lock);
     const rocksdb::Snapshot *psnapshot = const_cast<RocksDBStorageProvider*>(this)->m_spdb->GetSnapshot();
     return new RocksDBStorageProvider(m_pfactory, const_cast<RocksDBStorageProvider*>(this)->m_spdb, const_cast<RocksDBStorageProvider*>(this)->m_spcolfamily, psnapshot, m_count);
 }