IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Metric aggregation initialization context

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Metric aggregation initialization context

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Use a Painless script to initialize values for use in a scripted metric aggregation. An initialization script is run prior to document collection once per shard and is optional as part of the full metric aggregation.

Variables

params (Map, read-only): User-defined parameters passed in as part of the query.
params['_agg'] (Map): Empty Map used to add values for use in a map script.

Side Effects

params['_agg'] (Map): Add values to this Map to for use in a map. Additional values must be of the type Map, List, String or primitive.

Return

void: No expected return value.

API

The standard Painless API is available.

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