Question

运行此代码

try:
    connections.create_connection(hosts=[ES_IP], timeout=ES_TIMEOUT, http_auth=(USERNAME, PASSWORD))
    print "Connected to elasticsearch node "+ES_IP
    #logging.info("Connected to elasticsearch node "+ES_IP)
except:
    print "Connection refused by elasticsearch node "+ES_IP
    #logging.error("Connection refused by elasticsearch node "+ES_IP)
    return -1
else:
    s=Search(index = "*-indices-alias")
    a = A('matrix_stats',field=['ERABESTABADDATTNBRQCI1','ERABESTABADDATTNBRQCI6'])
    s.aggs.bucket('statistics',a)
    pprint(str(s.to_dict()))

我收到此错误

Traceback (most recent call last):
  File "elastic_query.py", line 45, in <module>
run_agg_dsl_query()
  File "elastic_query.py", line 41, in run_agg_dsl_query
    a = A('matrix_stats',field= 
['ERABESTABADDATTNBRQCI1','ERABESTABADDATTNBRQCI6'])
  File "/usr/local/lib/python2.7/dist-packages/elasticsearch_dsl/aggs.py", line 42, in A
    return Agg.get_dsl_class(name_or_agg)(**params)
  File "/usr/local/lib/python2.7/dist-packages/elasticsearch_dsl/utils.py", line 216, in get_dsl_class
     raise UnknownDslObject('DSL class `%s` does not exist in %s.' % (name, cls._type_name))
elasticsearch_dsl.exceptions.UnknownDslObject: DSL class `matrix_stats` does not exist in agg.

如果我将“ matrix_stats”替换为“ terms”，查询将生成为

"{'query': {'match_all': {}}, 'aggs': {'statistics': {'terms': {'field': ['ERABESTABADDATTNBRQCI1', 'ERABESTABADDATTNBRQCI6']}}}}"

但我希望查询生成为

"{'query': {'match_all': {}}, 'aggs': {'statistics': {'matrix_stats': {'field': ['ERABESTABADDATTNBRQCI1', 'ERABESTABADDATTNBRQCI6']}}}}"

elasticsearch-DSL库当前不支持matrix_stats吗？如果是，是否可以期望将来增加矩阵聚合？如果没有的话，那将是我不熟悉的东西。

感谢您的帮助。谢谢，

Answer 1

dsl尚不支持此聚合，很抱歉。要使其可用，您始终可以通过以下方式自行定义：

from elasticsearch_dsl.aggs import Agg

class MatrixStats(Agg):
    name = 'matrix_stats'

然后它应该工作。

elasticsearch-dsl库中不存在matrix_stats

1 个答案: