Set nlist to default after drop index (#719)

* #670 Random failure of unittest db_test::SEARCH_TEST

* add an important log

* add an important log

* add an important log

* #674 server down in stability test

* add more log

* remove log

* #696 metric_type changed from IP to L2

* #696 metric_type changed from IP to L2

* #696 metric_type changed from IP to L2

core/src/db/meta/MySQLMetaImpl.cpp

@@ -1138,6 +1138,7 @@ MySQLMetaImpl::DropTableIndex(const std::string& table_id) {
             // set table index type to raw
             dropTableIndexQuery << "UPDATE " << META_TABLES
                                 << " SET engine_type = " << std::to_string(DEFAULT_ENGINE_TYPE)
+                                << " ,nlist = " << std::to_string(DEFAULT_NLIST)
                                 << " WHERE table_id = " << mysqlpp::quote << table_id << ";";
 
             ENGINE_LOG_DEBUG << "MySQLMetaImpl::DropTableIndex: " << dropTableIndexQuery.str();

core/src/db/meta/SqliteMetaImpl.cpp

@@ -733,7 +733,8 @@ SqliteMetaImpl::DropTableIndex(const std::string& table_id) {
         //set table index type to raw
         ConnectorPtr->update_all(
             set(
-                c(&TableSchema::engine_type_) = DEFAULT_ENGINE_TYPE),
+                c(&TableSchema::engine_type_) = DEFAULT_ENGINE_TYPE,
+                c(&TableSchema::nlist_) = DEFAULT_NLIST),
             where(
                 c(&TableSchema::table_id_) == table_id));