refine

Former-commit-id: e0bb1ee1ff6c7bdac13ebe2d06ec45acb9db3d20

cpp/src/db/DBImpl.h

@@ -95,7 +95,7 @@ private:
 
     MetaPtr pMeta_;
     MemManagerPtr pMemMgr_;
-    
+
 }; // DBImpl
 
 

cpp/src/db/Options.h

@@ -15,6 +15,10 @@ namespace engine {
 
 class Env;
 
+static constexpr uint64_t ONE_KB = 1024;
+static constexpr uint64_t ONE_MB = ONE_KB*ONE_KB;
+static constexpr uint64_t ONE_GB = ONE_KB*ONE_MB;
+
 struct ArchiveConf {
     using CriteriaT = std::map<std::string, int>;
 
@@ -42,7 +46,7 @@ struct Options {
     Options();
     uint16_t  memory_sync_interval = 1;             //unit: second
     uint16_t  merge_trigger_number = 2;
-    size_t  index_trigger_size = 1024*1024*1024;    //unit: byte
+    size_t  index_trigger_size = ONE_GB;            //unit: byte
     Env* env;
     DBMetaOptions meta;
 }; // Options

cpp/src/server/RequestTask.cpp

@@ -37,8 +37,8 @@ namespace {
             opt.memory_sync_interval = (uint16_t)config.GetInt32Value(CONFIG_DB_FLUSH_INTERVAL, 10);
             opt.meta.path = db_path + "/db";
             int64_t index_size = config.GetInt64Value(CONFIG_DB_INDEX_TRIGGER_SIZE);
-            if(index_size > 0) {//ensure larger than zero
-                opt.index_trigger_size = (size_t)index_size;
+            if(index_size > 0) {//ensure larger than zero, unit is MB
+                opt.index_trigger_size = (size_t)index_size * engine::ONE_MB;
             }
 
             CommonUtil::CreateDirectory(opt.meta.path);