ElasticSearch 2.x parent-child performance


(Sundar V) #1

In the definite guide here - https://www.elastic.co/guide/en/elasticsearch/guide/current/parent-child-performance.html - there is a statement that the performance of parent-child queries can be 5-10 times slower than nested queries.

It says that there are plans to use doc values instead, for better performance. Is there an improvement on this area in 2.x

Thanks,
Sundar.


(Adrien Grand) #2

See https://github.com/elastic/elasticsearch/pull/6511. There are improvements, but parent/child is still much slower than nested queries, which are themselves much slower than regular queries.


(system) #3