StackableDB should pass ResetStats()

Summary: Closes https://github.com/facebook/rocksdb/pull/2190

Differential Revision: D4922688

Pulled By: siying

fbshipit-source-id: eaa3d122f8d389ae0508ec8b61f7780fd8b0a7ef

include/rocksdb/utilities/stackable_db.h

@@ -307,6 +307,9 @@ class StackableDB : public DB {
     return db_->SetDBOptions(new_options);
   }
 
+  using DB::ResetStats;
+  virtual Status ResetStats() override { return db_->ResetStats(); }
+
   using DB::GetPropertiesOfAllTables;
   virtual Status GetPropertiesOfAllTables(
       ColumnFamilyHandle* column_family,

utilities/transactions/transaction_test.cc

@@ -136,6 +136,8 @@ TEST_P(TransactionTest, DoubleEmptyWrite) {
 }
 
 TEST_P(TransactionTest, SuccessTest) {
+  ASSERT_OK(db->ResetStats());
+
   WriteOptions write_options;
   ReadOptions read_options;
   string value;