diff --git a/src/meta/processors/job/LeaderBalanceJobExecutor.cpp b/src/meta/processors/job/LeaderBalanceJobExecutor.cpp
index c42b65e94f8..99e25f6a63e 100644
--- a/src/meta/processors/job/LeaderBalanceJobExecutor.cpp
+++ b/src/meta/processors/job/LeaderBalanceJobExecutor.cpp
@@ -44,7 +44,7 @@ ErrorOr<nebula::cpp2::ErrorCode, bool> LeaderBalanceJobExecutor::getHostParts(Gr
                                                                               bool dependentOnZone,
                                                                               HostParts& hostParts,
                                                                               int32_t& totalParts) {
-  folly::SharedMutex::ReadHolder holder(LockUtils::lock());
+  // has been locked ouside
   const auto& prefix = MetaKeyUtils::partPrefix(spaceId);
   std::unique_ptr<kvstore::KVIterator> iter;
   auto retCode = kvstore_->prefix(kDefaultSpaceId, kDefaultPartId, prefix, &iter);