要获取的数据大小:大约20,000
问题:在python中使用下面的命令搜索弹性搜索索引数据
但没有得到任何结果。
from pyelasticsearch import ElasticSearch
es_repo = ElasticSearch(settings.ES_INDEX_URL)
search_results = es_repo.search(
query, index=advertiser_name, es_from=_from, size=_size),如果我给出的尺寸小于或等于10,000,它工作得很好,但是不能用20,000,请帮我找到这个问题的最佳解决方案。
PS:在深入挖掘ES时,发现了以下消息错误:
结果窗口太大,from + size必须小于或等于: 10000但为19999。有关请求大型数据集的更有效方法,请参见滚动API。
发布于 2018-03-16 12:47:06
对于实时使用,最好的解决方案是使用搜索后查询。您只需要一个日期字段,以及另一个唯一标识文档的字段--足够的_id字段或_uid字段了。尝试这样的方法,在我的示例中,我希望提取属于单个用户的所有文档-在我的示例中,用户字段有一个keyword datatype
from elasticsearch import Elasticsearch
es = Elasticsearch()
es_index = "your_index_name"
documento = "your_doc_type"
user = "Francesco Totti"
body2 = {
"query": {
"term" : { "user" : user }
}
}
res = es.count(index=es_index, doc_type=documento, body= body2)
size = res['count']
body = { "size": 10,
"query": {
"term" : {
"user" : user
}
},
"sort": [
{"date": "asc"},
{"_uid": "desc"}
]
}
result = es.search(index=es_index, doc_type=documento, body= body)
bookmark = [result['hits']['hits'][-1]['sort'][0], str(result['hits']['hits'][-1]['sort'][1]) ]
body1 = {"size": 10,
"query": {
"term" : {
"user" : user
}
},
"search_after": bookmark,
"sort": [
{"date": "asc"},
{"_uid": "desc"}
]
}
while len(result['hits']['hits']) < size:
res =es.search(index=es_index, doc_type=documento, body= body1)
for el in res['hits']['hits']:
result['hits']['hits'].append( el )
bookmark = [res['hits']['hits'][-1]['sort'][0], str(result['hits']['hits'][-1]['sort'][1]) ]
body1 = {"size": 10,
"query": {
"term" : {
"user" : user
}
},
"search_after": bookmark,
"sort": [
{"date": "asc"},
{"_uid": "desc"}
]
}然后,您将发现附加在result var中的所有文档。
如果您想使用scroll query - doc 这里
from elasticsearch import Elasticsearch, helpers
es = Elasticsearch()
es_index = "your_index_name"
documento = "your_doc_type"
user = "Francesco Totti"
body = {
"query": {
"term" : { "user" : user }
}
}
res = helpers.scan(
client = es,
scroll = '2m',
query = body,
index = es_index)
for i in res:
print(i)发布于 2018-03-16 12:21:56
可能是它的ElasticSearch约束。
index.max_result_window index setting which defaults to 10,000https://stackoverflow.com/questions/49320599
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