【ElasticSearch】Scroll滚动查询

REST API

 

 

Java Client

BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
boolQueryBuilder.must(QueryBuilders.termQuery("enable", 1));

final Scroll scroll = new Scroll(TimeValue.timeValueMinutes(10L));
SearchRequest searchRequest = new SearchRequest("myindex");
searchRequest.scroll(scroll);
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query(boolQueryBuilder);
searchSourceBuilder.size(200);
searchRequest.source(searchSourceBuilder);
log.error("DSL:" + searchSourceBuilder.toString());

SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
String scrollId = searchResponse.getScrollId();
SearchHit[] searchHits = searchResponse.getHits().getHits();

if (ArrayUtil.isNotEmpty(searchHits)) {
    for (SearchHit searchHit : searchHits) {
        System.out.println(searchHit.getId());
    }
}
while (searchHits != null && searchHits.length > 0) {
    SearchScrollRequest scrollRequest = new SearchScrollRequest(scrollId);
    scrollRequest.scroll(scroll);
    searchResponse = restHighLevelClient.scroll(scrollRequest, RequestOptions.DEFAULT);
    scrollId = searchResponse.getScrollId();
    searchHits = searchResponse.getHits().getHits();
    if (ArrayUtil.isNotEmpty(searchHits)) {
        for (SearchHit searchHit : searchHits) {
            System.out.println(searchHit.getId());
        }
    }
}

ClearScrollRequest clearScrollRequest = new ClearScrollRequest();
clearScrollRequest.addScrollId(scrollId);
ClearScrollResponse clearScrollResponse = restHighLevelClient.clearScroll(clearScrollRequest, RequestOptions.DEFAULT);
boolean succeeded = clearScrollResponse.isSucceeded();