php - Elasticsearch滚动API搜索 “from”

Question

我有一个脚本，该脚本基于URL索引http://example.com/sitemap.index.xml生成站点 map ，其中index是数字>0，用于定义应在每个块中包含的结果。

$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，每次我访问http://example.com/sitemap.1.xml或http://example.com/sitemap.2.xml时，从ES返回的结果都是完全相同的。它返回50结果(每个分片10个)，但似乎不计算from = 0和from = 10000的数量。

我正在使用elasticsearch-php作为E​​S库。

有任何想法吗？

Answer 1

在Java中，可以如下进行

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;
    }
}

希望能帮助到你。