scan() does not give me all hits

Hi! I’m using the scan method to retrieve a large number of search results

s = Search(using=connection, index=index, doc_type="doc")
q = Q({"multi_match": {"query": 'example_search', "fields": ['title', 'body'], "type":"phrase",
                  "minimum_should_match":"100%", "analyzer":'standard'}})
s = s.query(q)
hits = []
for hit in s.scan():
     hits.append({"doc_id": hit.doc_id, "found_term": 'example_search'})

I currently have the impression that the scan search is not returning all hits from my index. I had a look at the documentation of elasticsearch_dsl and elasticsearch but I don’t really understand if there is a parameter I should change or pass (maybe the scrolling parameter?) in order to assure that all hits in all documents will be returned… Any ideas on what might cause the problem?

[honzakral]

You can only iterate on the returned object once, if you want to iterate again you need to call scan again.

[davidgacc]

@HonzaKral I’m using Search() and scan() inside a function that is returning a result of the records. When I’m trying to iterate for the second time in the result, I’m not getting a result. Only for the first time works. Any ideas?