我在Elasticsearch中有一个小数据库,出于测试目的,我想把所有记录拉回来。我正在尝试使用表单的URL…
http://localhost:9200/foo/_search?pretty=true&q={'matchAll':{''}}
有人能给我你要用来完成这个的URL吗?
我在Elasticsearch中有一个小数据库,出于测试目的,我想把所有记录拉回来。我正在尝试使用表单的URL…
http://localhost:9200/foo/_search?pretty=true&q={'matchAll':{''}}
有人能给我你要用来完成这个的URL吗?
当前回答
Size参数将显示的命中数从默认值(10)增加到500。
http://localhost:9200/[indexName]/_search?pretty=true&size=500&q=*:*
将from逐步更改为获取所有数据。
http://localhost:9200/[indexName]/_search?size=500&from=0
其他回答
这是完成你想要的查询, (我建议使用Kibana,因为它有助于更好地理解查询)
GET my_index_name/my_type_name/_search
{
"query":{
"match_all":{}
},
size : 20,
from : 3
}
要获得所有的记录,你必须使用“match_all”查询。
Size是你想要获取的记录的数目(一种限制)。 默认情况下,ES只返回10条记录
从就像跳过,跳过前3个记录。
如果您想获取所有的记录,只需使用“total”字段的值 一旦你从Kibana命中这个查询的结果,并使用“大小”。
使用python包elasticsearch-dsl的简单解决方案:
from elasticsearch_dsl import Search
from elasticsearch_dsl import connections
connections.create_connection(hosts=['localhost'])
s = Search(index="foo")
response = s.scan()
count = 0
for hit in response:
# print(hit.to_dict()) # be careful, it will printout every hit in your index
count += 1
print(count)
参见https://elasticsearch-dsl.readthedocs.io/en/latest/api.html#elasticsearch_dsl.Search.scan。
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
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,
...
来自Kibana DevTools的:
GET my_index_name/_search
{
"query": {
"match_all": {}
}
}