new SearchShardTarget("node", new ShardId(new Index("index", "index"), i), null, OriginalIndices.NONE)
            );
            shards.add(result);
        }
        SearchRequest request = new SearchRequest();
        request.source(new SearchSourceBuilder().size(0).aggregation(AggregationBuilders.terms("test")));
        request.setBatchedReduceSize(bufferSize);