From 0b33fdbec1c10b7380a46f7c88123cd9cb06e6e8 Mon Sep 17 00:00:00 2001
From: Minglei Jin <mljin@taosdata.com>
Date: Thu, 3 Jun 2021 18:15:36 +0800
Subject: [PATCH] [TD-4412]<fix>: add new configuration parameter for db option
 cachelast

---
 src/common/src/tglobal.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index ed91695569..786c612d61 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -887,6 +887,16 @@ static void doInitGlobalConfig(void) {
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);
 
+  cfg.option = "cachelast";
+  cfg.ptr = &tsCacheLastRow;
+  cfg.valType = TAOS_CFG_VTYPE_INT8;
+  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
+  cfg.minValue = TSDB_MIN_DB_CACHE_LAST_ROW;
+  cfg.maxValue = TSDB_MAX_DB_CACHE_LAST_ROW;
+  cfg.ptrLength = 0;
+  cfg.unitType = TAOS_CFG_UTYPE_NONE;
+  taosInitConfigOption(cfg);
+
   cfg.option = "mqttHostName";
   cfg.ptr = tsMqttHostName;
   cfg.valType = TAOS_CFG_VTYPE_STRING;
-- 
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