74 lines
2.6 KiB
Plaintext
74 lines
2.6 KiB
Plaintext
[[search-aggregations-bucket]]
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== Bucket Aggregations
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Bucket aggregations don't calculate metrics over fields like the metrics aggregations do, but instead, they create
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buckets of documents. Each bucket is associated with a criterion (depending on the aggregation type) which determines
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whether or not a document in the current context "falls" into it. In other words, the buckets effectively define document
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sets. In addition to the buckets themselves, the `bucket` aggregations also compute and return the number of documents
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that "fell into" each bucket.
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Bucket aggregations, as opposed to `metrics` aggregations, can hold sub-aggregations. These sub-aggregations will be
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aggregated for the buckets created by their "parent" bucket aggregation.
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There are different bucket aggregators, each with a different "bucketing" strategy. Some define a single bucket, some
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define fixed number of multiple buckets, and others dynamically create the buckets during the aggregation process.
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NOTE: The maximum number of buckets allowed in a single response is limited by a
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dynamic cluster setting named
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<<search-settings-max-buckets,`search.max_buckets`>>. It defaults to 65,535,
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requests that try to return more than the limit will fail with an exception.
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include::bucket/adjacency-matrix-aggregation.asciidoc[]
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include::bucket/autodatehistogram-aggregation.asciidoc[]
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include::bucket/children-aggregation.asciidoc[]
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include::bucket/composite-aggregation.asciidoc[]
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include::bucket/datehistogram-aggregation.asciidoc[]
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include::bucket/daterange-aggregation.asciidoc[]
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include::bucket/diversified-sampler-aggregation.asciidoc[]
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include::bucket/filter-aggregation.asciidoc[]
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include::bucket/filters-aggregation.asciidoc[]
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include::bucket/geodistance-aggregation.asciidoc[]
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include::bucket/geohashgrid-aggregation.asciidoc[]
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include::bucket/geotilegrid-aggregation.asciidoc[]
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include::bucket/global-aggregation.asciidoc[]
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include::bucket/histogram-aggregation.asciidoc[]
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include::bucket/iprange-aggregation.asciidoc[]
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include::bucket/missing-aggregation.asciidoc[]
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include::bucket/nested-aggregation.asciidoc[]
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include::bucket/parent-aggregation.asciidoc[]
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include::bucket/range-aggregation.asciidoc[]
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include::bucket/rare-terms-aggregation.asciidoc[]
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include::bucket/reverse-nested-aggregation.asciidoc[]
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include::bucket/sampler-aggregation.asciidoc[]
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include::bucket/significantterms-aggregation.asciidoc[]
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include::bucket/significanttext-aggregation.asciidoc[]
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include::bucket/terms-aggregation.asciidoc[]
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include::bucket/variablewidthhistogram-aggregation.asciidoc[]
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include::bucket/range-field-note.asciidoc[]
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