mirror of
https://github.com/elastic/elasticsearch.git
synced 2025-04-25 15:47:23 -04:00
9e3384ebc9
Adds a multi_terms aggregation support. The multi terms aggregation works very similarly to the terms aggregation but supports multiple terms. The goal of this PR is to add the basic functionality so it is not optimized at the moment. It will be done in follow up PRs. Closes #65623
75 lines
2.6 KiB
Text
75 lines
2.6 KiB
Text
[[search-aggregations-bucket]]
|
|
== Bucket aggregations
|
|
|
|
Bucket aggregations don't calculate metrics over fields like the metrics aggregations do, but instead, they create
|
|
buckets of documents. Each bucket is associated with a criterion (depending on the aggregation type) which determines
|
|
whether or not a document in the current context "falls" into it. In other words, the buckets effectively define document
|
|
sets. In addition to the buckets themselves, the `bucket` aggregations also compute and return the number of documents
|
|
that "fell into" each bucket.
|
|
|
|
Bucket aggregations, as opposed to `metrics` aggregations, can hold sub-aggregations. These sub-aggregations will be
|
|
aggregated for the buckets created by their "parent" bucket aggregation.
|
|
|
|
There are different bucket aggregators, each with a different "bucketing" strategy. Some define a single bucket, some
|
|
define fixed number of multiple buckets, and others dynamically create the buckets during the aggregation process.
|
|
|
|
NOTE: The maximum number of buckets allowed in a single response is limited by a
|
|
dynamic cluster setting named
|
|
<<search-settings-max-buckets,`search.max_buckets`>>. It defaults to 65,535.
|
|
Requests that try to return more than the limit will fail with an exception.
|
|
|
|
include::bucket/adjacency-matrix-aggregation.asciidoc[]
|
|
|
|
include::bucket/autodatehistogram-aggregation.asciidoc[]
|
|
|
|
include::bucket/children-aggregation.asciidoc[]
|
|
|
|
include::bucket/composite-aggregation.asciidoc[]
|
|
|
|
include::bucket/datehistogram-aggregation.asciidoc[]
|
|
|
|
include::bucket/daterange-aggregation.asciidoc[]
|
|
|
|
include::bucket/diversified-sampler-aggregation.asciidoc[]
|
|
|
|
include::bucket/filter-aggregation.asciidoc[]
|
|
|
|
include::bucket/filters-aggregation.asciidoc[]
|
|
|
|
include::bucket/geodistance-aggregation.asciidoc[]
|
|
|
|
include::bucket/geohashgrid-aggregation.asciidoc[]
|
|
|
|
include::bucket/geotilegrid-aggregation.asciidoc[]
|
|
|
|
include::bucket/global-aggregation.asciidoc[]
|
|
|
|
include::bucket/histogram-aggregation.asciidoc[]
|
|
|
|
include::bucket/iprange-aggregation.asciidoc[]
|
|
|
|
include::bucket/missing-aggregation.asciidoc[]
|
|
|
|
include::bucket/multi-terms-aggregation.asciidoc[]
|
|
|
|
include::bucket/nested-aggregation.asciidoc[]
|
|
|
|
include::bucket/parent-aggregation.asciidoc[]
|
|
|
|
include::bucket/range-aggregation.asciidoc[]
|
|
|
|
include::bucket/rare-terms-aggregation.asciidoc[]
|
|
|
|
include::bucket/reverse-nested-aggregation.asciidoc[]
|
|
|
|
include::bucket/sampler-aggregation.asciidoc[]
|
|
|
|
include::bucket/significantterms-aggregation.asciidoc[]
|
|
|
|
include::bucket/significanttext-aggregation.asciidoc[]
|
|
|
|
include::bucket/terms-aggregation.asciidoc[]
|
|
|
|
include::bucket/variablewidthhistogram-aggregation.asciidoc[]
|
|
|
|
include::bucket/range-field-note.asciidoc[]
|