Size = 0 w/ query_then_fetch vs count search_type

Hi:

For some reason I remember someone saying (might have been during a
training or git issue) that ElasticSearch would optimize a query_then_fetch
search with size=0 to a count search. But now I can't find anywhere on the
interwebs or in a quick search through the code. Does anyone know if this
is the case or if it really is more important to specify count search_type
rather than size=0 (in this instance, it's in the context of wanting to do
an aggregation and I don't care about the hits).

Thanks in advance
Andy O

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/b349267e-c01b-4fcb-9b2d-c80a14e5015f%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.