Elasticsearch 滚动 api 搜索“来自”

Question

我有一个基于 url 索引 http://example.com/sitemap.index.xml 生成站点地图的脚本，其中 index 是一个数字 >0，它定义了每个块中应包含哪些结果。

$chunk = 10000;
$counter = 0;

$scroll = $es->search(array(
    "index" => "index",
    "type" => "type",
    "scroll" => "1m",
    "search_type" => "scan",
    "size" => 10,
    "from" => $chunk * ($index - 1)
));
$sid = $scroll['_scroll_id'];

while($counter < $chunk){
    $docs = $es->scroll(array(
        "scroll_id" => $sid,
        "scroll" => "1m"
    ));
    $sid = $docs['_scroll_id'];
    $counter += count($docs['hits']['hits']);
}

// ...

现在每次访问http://example.com/sitemap.1.xml 或http://example.com/sitemap.2.xml ES 返回的结果都是一样的。它返回 50 结果（每个分片 10 个），但似乎没有计算 from = 0、from = 10000。

我使用elasticsearch-php 作为 ES 库。

有什么想法吗？

Answer 1

在Java中，可以这样做

QueryBuilder query = QueryBuilders.matchAllQuery();
SearchResponse scrollResp = Constants.client.prepareSearch(index)
        .setTypes(type).setSearchType(SearchType.SCAN)
        .setScroll(new TimeValue(600000)).setQuery(query)
        .setSize(500).execute().actionGet();
while (true) {
    scrollResp = Constants.client
            .prepareSearchScroll(scrollResp.getScrollId())
            .setScroll(new TimeValue(600000)).execute().actionGet();
    System.out.println("Record count :"
            + scrollResp.getHits().getHits().length);
    total = total + scrollResp.getHits().getHits().length;
    System.out.println("Total record count: " + total);
    for (SearchHit hit : scrollResp.getHits()) {
    //handle the hit
    }
    // Break condition: No hits are returned
    if (scrollResp.getHits().getHits().length == 0) {
        System.out.println("All records are fetched");
        break;
    }
}

希望对你有帮助。