Hello, I am writing an analytics application that makes heavy use of aggregations. My situation seems suited to parent/child. I have relatively few parents (hundreds) and a lot more children (tens of millions). The has_parent query or filter provide an elegant way to perform the sort of queries…

Why is has_parent so slow? and can anything be done?

Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant logo are trademarks of the Apache Software Foundation in the United States and/or other countries.

Why is has_parent so slow? and can anything be done?