Implement top_metrics agg (#51155) #52366
Merged
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The
top_metrics
agg is kind of liketop_hits
but it only works ondoc values so it should be faster.
At this point it is fairly limited in that it only supports a single,
numeric sort and a single, numeric metric. And it only fetches the "very
topest" document worth of metric. We plan to support returning a
configurable number of top metrics, requesting more than one metric and
more than one sort. And, eventually, non-numeric sorts and metrics. The
trick is doing those things fairly efficiently.
Co-Authored by: Zachary Tong zach@elastic.co