Top metrics aggregation #

A metrics aggregation that returns metric values from the leading matching documents — a cheaper alternative to top_hits when you only need field values, not whole documents.

Engine note: sort is accepted for compatibility; the current implementation returns the metrics of the first size matching documents.

Example #

Parameters for top_metrics #

• metrics
  (Required, object array) field entries whose values are returned.
• sort
  (Optional, array) Sort clause selecting the “top” documents.
• size
  (Optional, integer, default: 1) How many top entries to return.