From d32b8fa0f1dc1189931dd7fb1ca3071a1d3c2c66 Mon Sep 17 00:00:00 2001
From: Shengliang Guan <slguan@taosdata.com>
Date: Thu, 8 Sep 2022 09:28:00 +0800
Subject: [PATCH] fix: information_schema and performance_schema creation time
 error

---
 source/dnode/mnode/impl/src/mndDb.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index c598b188b7..feb69bf74f 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -15,6 +15,7 @@
 
 #define _DEFAULT_SOURCE
 #include "mndDb.h"
+#include "mndCluster.h"
 #include "mndDnode.h"
 #include "mndOffset.h"
 #include "mndPrivilege.h"
@@ -1714,18 +1715,18 @@ static void mndDumpDbInfoData(SMnode *pMnode, SSDataBlock *pBlock, SDbObj *pDb,
   taosMemoryFree(buf);
 }
 
-static void setInformationSchemaDbCfg(SDbObj *pDbObj) {
+static void setInformationSchemaDbCfg(SMnode *pMnode, SDbObj *pDbObj) {
   tstrncpy(pDbObj->name, TSDB_INFORMATION_SCHEMA_DB, tListLen(pDbObj->name));
-  pDbObj->createdTime = 0;
+  pDbObj->createdTime = mndGetClusterCreateTime(pMnode);
   pDbObj->cfg.numOfVgroups = 0;
   pDbObj->cfg.strict = 1;
   pDbObj->cfg.replications = 1;
   pDbObj->cfg.precision = TSDB_TIME_PRECISION_MILLI;
 }
 
-static void setPerfSchemaDbCfg(SDbObj *pDbObj) {
+static void setPerfSchemaDbCfg(SMnode *pMnode, SDbObj *pDbObj) {
   tstrncpy(pDbObj->name, TSDB_PERFORMANCE_SCHEMA_DB, tListLen(pDbObj->name));
-  pDbObj->createdTime = 0;
+  pDbObj->createdTime = mndGetClusterCreateTime(pMnode);
   pDbObj->cfg.numOfVgroups = 0;
   pDbObj->cfg.strict = 1;
   pDbObj->cfg.replications = 1;
@@ -1756,7 +1757,7 @@ static int32_t mndRetrieveDbs(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBloc
   // Append the information_schema database into the result.
   if (!pShow->sysDbRsp) {
     SDbObj infoschemaDb = {0};
-    setInformationSchemaDbCfg(&infoschemaDb);
+    setInformationSchemaDbCfg(pMnode, &infoschemaDb);
     size_t numOfTables = 0;
     getVisibleInfosTablesNum(sysinfo, &numOfTables);
     mndDumpDbInfoData(pMnode, pBlock, &infoschemaDb, pShow, numOfRows, numOfTables, true, 0, 1);
@@ -1764,7 +1765,7 @@ static int32_t mndRetrieveDbs(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pBloc
     numOfRows += 1;
 
     SDbObj perfschemaDb = {0};
-    setPerfSchemaDbCfg(&perfschemaDb);
+    setPerfSchemaDbCfg(pMnode, &perfschemaDb);
     numOfTables = 0;
     getPerfDbMeta(NULL, &numOfTables);
     mndDumpDbInfoData(pMnode, pBlock, &perfschemaDb, pShow, numOfRows, numOfTables, true, 0, 1);