Module agg 

Aggregation framework: collectors, result types, and aggregation definitions.

See [[aggregations]] and [[feature-aggregations-v010|milestone-3]].

Modules

bucket

Bucket aggregation implementations: terms, range, histogram, filter.

hll

HyperLogLog++ cardinality estimation for the cardinality aggregation.

metric

Metric aggregation implementations: avg, sum, min, max, value_count, stats.

parser

Aggregation JSON parser.

tdigest

T-digest approximate percentile estimation for the percentiles aggregation.

Structs

Bucket

A single bucket in a bucket aggregation result.

BucketResult

Result from a bucket aggregation.

HitsResult

Result from a top_hits aggregation.

MetricResult

Result from a metric aggregation (single numeric value).

RangeDef

A range definition for range aggregation.

Enums

AggregationExpression

A composable aggregation expression. The engine’s native representation. JSON is parsed into this at the edge. Analogous to ScoringExpression.

AggregationResult

Top-level aggregation result.

BucketKey

The key identifying a bucket.

CalendarInterval

Calendar-aware intervals.

DateInterval

Date histogram interval.

Traits

Aggregator

Per-segment aggregation collector. Called once per matching document.

AggregatorFactory

Creates per-segment aggregation collectors and merges their results.