code: public BatchResult addBatch(ApplicationDefinition appDef, String shardName, OlapBatch batch) {
          Utils.require(shardName.equals(MONO_SHARD_NAME), "Shard name must be: " + MONO_SHARD_NAME);
          return OLAPService.instance().addBatch(appDef, shardName, batch);
      }
docs: Store name should always be MONO_SHARD_NAME for OLAPMono.