这是我使用python客户端发现的最佳解决方案

  # Initialize the scroll
  page = es.search(
  index = 'yourIndex',
  doc_type = 'yourType',
  scroll = '2m',
  search_type = 'scan',
  size = 1000,
  body = {
    # Your query's body
    })
  sid = page['_scroll_id']
  scroll_size = page['hits']['total']

  # Start scrolling
  while (scroll_size > 0):
    print "Scrolling..."
    page = es.scroll(scroll_id = sid, scroll = '2m')
    # Update the scroll ID
    sid = page['_scroll_id']
    # Get the number of results that we returned in the last scroll
    scroll_size = len(page['hits']['hits'])
    print "scroll size: " + str(scroll_size)
    # Do something with the obtained page

https://gist.github.com/drorata/146ce50807d16fd4a6aa

使用java客户端

import static org.elasticsearch.index.query.QueryBuilders.*;

QueryBuilder qb = termQuery("multi", "test");

SearchResponse scrollResp = client.prepareSearch(test)
        .addSort(FieldSortBuilder.DOC_FIELD_NAME, SortOrder.ASC)
        .setScroll(new TimeValue(60000))
        .setQuery(qb)
        .setSize(100).execute().actionGet(); //100 hits per shard will be returned for each scroll
//Scroll until no hits are returned
do {
    for (SearchHit hit : scrollResp.getHits().getHits()) {
        //Handle the hit...
    }

    scrollResp = client.prepareSearchScroll(scrollResp.getScrollId()).setScroll(new TimeValue(60000)).execute().actionGet();
} while(scrollResp.getHits().getHits().length != 0); // Zero hits mark the end of the scroll and the while loop.

https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-search-scrolling.html

简单!你可以使用size和from参数!

http://localhost:9200/[your index name]/_search?size=1000&from=0

然后逐渐改变，直到你得到所有的数据。

如果仍然有人像我一样寻找从Elasticsearch中检索的所有数据，下面是我所做的。此外，所有的数据意味着，所有的索引和所有的文档类型。我使用的是Elasticsearch 6.3

curl -X GET "localhost:9200/_search?pretty=true" -H 'Content-Type: application/json' -d'
{
    "query": {
        "match_all": {}
    }
}
'

Elasticsearch参考

使用server:9200/_stats也可以获得所有别名的统计信息。就像每个别名的大小和元素数量一样，这非常有用，并提供了有用的信息

要从所有索引中返回所有记录，您可以执行:

curl -XGET http://35.195.120.21:9200/_all/_search?size=50&pretty

输出:

  "took" : 866,
  "timed_out" : false,
  "_shards" : {
    "total" : 25,
    "successful" : 25,
    "failed" : 0
  },
  "hits" : {
    "total" : 512034694,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "grafana-dash",
      "_type" : "dashboard",
      "_id" : "test",
      "_score" : 1.0,
       ...

http://127.0.0.1:9200/foo/_search/?size=1000&pretty=1
                                   ^

请注意size参数，它将每个分片显示的命中数从默认值(10)增加到1000。

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-from-size.html