[TS-981]<fix>(other): allow config offlineInterval dynamically

src/client/src/tscSQLParser.c

@@ -7265,6 +7265,7 @@ int32_t validateDNodeConfig(SMiscInfo* pOptions) {
   const int tokenMonitor = 3;
   const int tokenDebugFlag = 4;
   const int tokenDebugFlagEnd = 20;
+  const int tokenOfflineInterval = 21;
   const SDNodeDynConfOption cfgOptions[] = {
       {"resetLog", 8},    {"resetQueryCache", 15},  {"balance", 7},     {"monitor", 7},
       {"debugFlag", 9},   {"monDebugFlag", 12},     {"vDebugFlag", 10}, {"mDebugFlag", 10},
@@ -7272,6 +7273,7 @@ int32_t validateDNodeConfig(SMiscInfo* pOptions) {
       {"uDebugFlag", 10}, {"tsdbDebugFlag", 13},    {"sDebugflag", 10}, {"rpcDebugFlag", 12},
       {"dDebugFlag", 10}, {"mqttDebugFlag", 13},    {"wDebugFlag", 10}, {"tmrDebugFlag", 12},
       {"cqDebugFlag", 11},
+      {"offlineInterval", 15},
   };
 
   SStrToken* pOptionToken = taosArrayGet(pOptions->a, 1);
@@ -7303,6 +7305,14 @@ int32_t validateDNodeConfig(SMiscInfo* pOptions) {
       return TSDB_CODE_TSC_INVALID_OPERATION;  // options value is invalid
     }
     return TSDB_CODE_SUCCESS;
+  } else if ((strncasecmp(cfgOptions[tokenOfflineInterval].name, pOptionToken->z, pOptionToken->n) == 0) &&
+             (cfgOptions[tokenOfflineInterval].len == pOptionToken->n)) {
+    SStrToken* pValToken = taosArrayGet(pOptions->a, 2);
+    int32_t    val = strtol(pValToken->z, NULL, 10);
+    if (val < 1 || val > 600) {
+      return TSDB_CODE_TSC_INVALID_OPERATION;  // options value is invalid
+    }
+    return TSDB_CODE_SUCCESS;
   } else {
     SStrToken* pValToken = taosArrayGet(pOptions->a, 2);