message: added limit to serviceMapDependencies query to druid
diff: @@ -517,7 +517,7 @@ func GetServices(client *SqlClient, query *model.GetServicesParams) (*[]model.Se
  func GetServiceMapDependencies(client *SqlClient, query *model.GetServicesParams) (*[]model.ServiceMapDependencyResponseItem, error) {
  - sqlQuery := fmt.Sprintf(`SELECT SpanId, ParentSpanId, ServiceName FROM %s WHERE "__time" >= '%s' AND "__time" <= '%s' ORDER BY __time DESC`, constants.DruidDatasource, query.StartTime, query.EndTime)
  + sqlQuery := fmt.Sprintf(`SELECT SpanId, ParentSpanId, ServiceName FROM %s WHERE "__time" >= '%s' AND "__time" <= '%s' ORDER BY __time DESC LIMIT 100000`, constants.DruidDatasource, query.StartTime, query.EndTime)
  // zap.S().Debug(sqlQuery)
  