private SearchRequest buildRequest(ESUpdateNode node) {
SearchRequest searchRequest = new SearchRequest();
searchRequest.indices(node.indices());
searchRequest.types(Constants.DEFAULT_MAPPING_TYPE);
searchRequest.preference("_primary");
searchRequest.routing(node.whereClause().clusteredBy().orNull());
try {
searchRequest.source(queryBuilder.convert(node), false);
} catch (IOException e) {