Elasticsearch dsl删除错误

Question

我在使用elasticsearch dsl删除项目时遇到问题。当我试图过滤我的数据时，它很容易，像这样的东西效果很好。

def searchId(fileId):
s = Search().filter('term', fileId=fileId)
# for hit in s:
#     print(str(hit.foreignKey))
response=s.execute()
# print(response.hits.total)
return response

扫描也可以：

def scanning():
s = Search()
i = 0
for hit in s.scan():
    if hit.domain == 'Messages':
        i+=1
        print(str(hit.fileId) + " : " + str(hit.domain) + " : " + str(i))

但是当我想删除这样的项目时：

def deleteId(fileId):
s = Search().query('match', fileId=fileId)
response = s.delete()
return "Done"

我出错了：

    Traceback (most recent call last):
  File "", line 1, in 
  File "/home/o.solop/DataSearchEngine/datasearch/elasticapp/search.py", line 96, in deleteId
    response = s.delete()
  File "/usr/local/lib/python2.7/dist-packages/elasticsearch_dsl/search.py", line 660, in delete
    **self._params
  File "/usr/local/lib/python2.7/dist-packages/elasticsearch/client/utils.py", line 73, in _wrapped
    return func(*args, params=params, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/elasticsearch/client/__init__.py", line 887, in delete_by_query
    raise ValueError("Empty value passed for a required argument.")
ValueError: Empty value passed for a required argument.

Answer 1

我在搜索构造函数中错过了一个索引。我应该这样做：

def deleteId(fileId):
 s = Search(index='my_index_name').query('match', fileId=fileId)
 response = s.delete()

Elasticsearch ch-dsl使用delete_by_queryAPI，如我的错误消息中所示，它需要知道针对哪个索引执行删除。