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Metric aggregation combine context
editMetric aggregation combine context
editUse a Painless script to combine values for use in a scripted metric aggregation. A combine script is run once per shard following a map script and is optional as part of a full metric aggregation.
Variables
-
params
(Map
, read-only) - User-defined parameters passed in as part of the query.
-
state
(Map
) -
Map
with values available from the prior map script.
Return
-
List
,Map
,String
, or primitive - A value collected for use in a reduce script. If no reduce script is specified, the value is used as part of the result.
API
The standard Painless API is available.