Scroll java API timeout setting seemingly no effact

Elastic Stack Elasticsearch
1

Hi, I wrote a program get data use the java scroll API, when set timeout equals 1 second, it seems elasticsearch used about 60 seconds to timeout. I used elasticsearch2.3.1.
here is my code, any suggestion? thanks

@Test
public void testDuelIndexOrder() {
    Client client = ElasticClient.getClient();
    SearchResponse scroll = client.prepareSearch("ice")
            .setSize(1)
            .setQuery(QueryBuilders.matchQuery("taskId", "1"))
            .addSort(SortBuilders.fieldSort("age"))
            .setScroll("1s")
            .get();
    int scrollDocs = 0;
    try {
        while (true) {
            try {
                Thread.sleep(20000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            if (scroll.getHits().hits().length == 0) {
                break;
            }
            for (int i = 0; i < scroll.getHits().hits().length; ++i) {
                SearchHit scrollHit = scroll.getHits().getAt(i);
            }
            scrollDocs += scroll.getHits().hits().length;
            scroll = client.prepareSearchScroll(scroll.getScrollId()).setScroll("1s").get();
        }
    } catch (AssertionError e) {
        e.printStackTrace();
    }finally {
        System.out.println(scrollDocs);
        client.close();
    }
}
2

There is not much sense in using scroll life times < 1 minute because the scroll housekeeper thread is running each minute.

If you want to kill your scroll context before the housekeeper thread catches up, send an explicit clear operation https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-scroll.html#_clear_scroll_api

3

thanks a lot