fix(tsdb): default value of tsdbPageSize

source/dnode/vnode/src/vnd/vnodeCfg.c

@@ -115,7 +115,6 @@ int vnodeEncodeConfig(const void *pObj, SJson *pJson) {
   if (tjsonAddIntegerToObject(pJson, "hashMethod", pCfg->hashMethod) < 0) return -1;
   if (tjsonAddIntegerToObject(pJson, "hashPrefix", pCfg->hashPrefix) < 0) return -1;
   if (tjsonAddIntegerToObject(pJson, "hashSuffix", pCfg->hashSuffix) < 0) return -1;
-  if (tjsonAddIntegerToObject(pJson, "tsdbPageSize", pCfg->tsdbPageSize) < 0) return -1;
 
   if (tjsonAddIntegerToObject(pJson, "syncCfg.replicaNum", pCfg->syncCfg.replicaNum) < 0) return -1;
   if (tjsonAddIntegerToObject(pJson, "syncCfg.myIndex", pCfg->syncCfg.myIndex) < 0) return -1;
@@ -256,7 +255,9 @@ int vnodeDecodeConfig(const SJson *pJson, void *pObj) {
   }
 
   tjsonGetNumberValue(pJson, "tsdbPageSize", pCfg->tsdbPageSize, code);
-  if (code < 0) pCfg->tsdbPageSize = TSDB_DEFAULT_TSDB_PAGESIZE * 1024;
+  if (code < 0 || pCfg->tsdbPageSize < TSDB_MIN_PAGESIZE_PER_VNODE) {
+    pCfg->tsdbPageSize = TSDB_DEFAULT_TSDB_PAGESIZE * 1024;
+  }
 
   return 0;
 }