[TD-374] update code while alter database maxTables

src/mnode/inc/mgmtVgroup.h

@@ -29,6 +29,7 @@ void    mgmtIncVgroupRef(SVgObj *pVgroup);
 void    mgmtDecVgroupRef(SVgObj *pVgroup);
 void    mgmtDropAllDbVgroups(SDbObj *pDropDb, bool sendMsg);
 void    mgmtDropAllDnodeVgroups(SDnodeObj *pDropDnode);
+void    mgmtUpdateAllDbVgroups(SDbObj *pAlterDb);
 
 void *  mgmtGetNextVgroup(void *pIter, SVgObj **pVgroup);
 void    mgmtUpdateVgroup(SVgObj *pVgroup);

src/mnode/src/mgmtDb.c

@@ -96,6 +96,7 @@ static int32_t mgmtDbActionUpdate(SSdbOper *pOper) {
     memcpy(pSaved, pDb, pOper->rowSize);
     free(pDb);
   }
+  mgmtUpdateAllDbVgroups(pSaved);
   mgmtDecDbRef(pSaved);
   return TSDB_CODE_SUCCESS;
 }

src/mnode/src/mgmtVgroup.c

@@ -121,6 +121,19 @@ static int32_t mgmtVgroupActionDelete(SSdbOper *pOper) {
   return TSDB_CODE_SUCCESS;
 }
 
+static void mgmtVgroupUpdateIdPool(SVgObj *pVgroup) {
+  int32_t oldTables = taosIdPoolMaxSize(pVgroup->idPool);
+  SDbObj *pDb = pVgroup->pDb;
+  if (pDb != NULL) {
+    if (pDb->cfg.maxTables != oldTables) {
+      mPrint("vgId:%d tables change from %d to %d", pVgroup->vgId, oldTables, pDb->cfg.maxTables);
+      taosUpdateIdPool(pVgroup->idPool, pDb->cfg.maxTables);
+      int32_t size = sizeof(SChildTableObj *) * pDb->cfg.maxTables;
+      pVgroup->tableList = (SChildTableObj **)realloc(pVgroup->tableList, size);
+    }
+  }
+}
+
 static int32_t mgmtVgroupActionUpdate(SSdbOper *pOper) {
   SVgObj *pNew = pOper->pObj;
   SVgObj *pVgroup = mgmtGetVgroup(pNew->vgId);
@@ -146,20 +159,11 @@ static int32_t mgmtVgroupActionUpdate(SSdbOper *pOper) {
     }
   }
 
-  int32_t oldTables = taosIdPoolMaxSize(pVgroup->idPool);
-  SDbObj *pDb = pVgroup->pDb;
-  if (pDb != NULL) {
-    if (pDb->cfg.maxTables != oldTables) {
-      mPrint("vgId:%d tables change from %d to %d", pVgroup->vgId, oldTables, pDb->cfg.maxTables);
-      taosUpdateIdPool(pVgroup->idPool, pDb->cfg.maxTables);
-      int32_t size = sizeof(SChildTableObj *) * pDb->cfg.maxTables;
-      pVgroup->tableList = (SChildTableObj **)realloc(pVgroup->tableList, size);
-    }
-  }
+  mgmtVgroupUpdateIdPool(pVgroup);
 
   mgmtDecVgroupRef(pVgroup);
 
-  mTrace("vgId:%d, is updated, numOfVnode:%d tables:%d", pVgroup->vgId, pVgroup->numOfVnodes, pDb == NULL ? 0 : pDb->cfg.maxTables);
+  mTrace("vgId:%d, is updated, numOfVnode:%d", pVgroup->vgId, pVgroup->numOfVnodes);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -762,6 +766,28 @@ void mgmtDropAllDnodeVgroups(SDnodeObj *pDropDnode) {
   sdbFreeIter(pIter);
 }
 
+void mgmtUpdateAllDbVgroups(SDbObj *pAlterDb) {
+  void *  pIter = NULL;
+  SVgObj *pVgroup = NULL;
+
+  mPrint("db:%s, all vgroups will be update in sdb", pAlterDb->name);
+
+  while (1) {
+    pIter = mgmtGetNextVgroup(pIter, &pVgroup);
+    if (pVgroup == NULL) break;
+
+    if (pVgroup->pDb == pAlterDb) {
+      mgmtVgroupUpdateIdPool(pVgroup);
+    }
+
+    mgmtDecVgroupRef(pVgroup);
+  }
+
+  sdbFreeIter(pIter);
+
+  mPrint("db:%s, all vgroups is updated in sdb", pAlterDb->name);
+}
+
 void mgmtDropAllDbVgroups(SDbObj *pDropDb, bool sendMsg) {
   void *  pIter = NULL;
   int32_t numOfVgroups = 0;

tests/script/general/db/alter_tables_v1.sim

@@ -49,7 +49,7 @@ endi
 
 print ============================ step3
 
-sql create database db maxTables 20
+sql alter database db maxTables 20
 sleep 1000
 
 sql create table db.t10 using db.st tags(0)
@@ -87,7 +87,7 @@ endi
 
 print ============================ step5
 
-sql create database db maxTables 30
+sql alter database db maxTables 30
 sleep 1000
 
 sql create table db.t20 using db.st tags(0)
@@ -185,7 +185,7 @@ endi
 
 print ============================ step9
 
-sql create database db maxTables 40
+sql alter database db maxTables 40
 sleep 1000
 
 sql create table db.t30 using db.st tags(0)