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@@ -80,7 +80,7 @@ Aggregates and stores fields in the rollup.
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+
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.Properties of `groups`
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[%collapsible%open]
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-====
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+=====
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`date_histogram`::
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(Required,
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<<search-aggregations-bucket-datehistogram-aggregation,`date_histogram`
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@@ -89,7 +89,7 @@ Groups documents based on a provided time interval.
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+
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.Properties of `date_histogram`
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[%collapsible%open]
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-=====
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+======
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`field`::
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(Required, string)
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<<date,`date`>> or <<date_nanos,`date_nanos`>> field containing a timestamp. If
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@@ -111,7 +111,7 @@ resulting rollup index.
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Time zone for the `field`. Valid values are ISO 8601 UTC offsets, such as
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`+01:00` or `-08:00`, and IANA time zone IDs, such as `America/Los_Angeles`.
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Defaults to `+00:00` (UTC).
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-=====
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+======
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`histogram`::
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(Optional, <<search-aggregations-bucket-histogram-aggregation,`histogram`
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@@ -120,7 +120,7 @@ Groups and stores <<number,numeric>> field values based on a provided interval.
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+
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.Properties of `histogram`
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[%collapsible%open]
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-=====
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+======
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`fields`::
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(Required*, array of strings)
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Array of <<number,numeric>> fields to group. If you specify a `histogram`
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@@ -130,7 +130,7 @@ object, this property is required.
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(Required*, integer)
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Numeric interval used to group the `fields`. If you specify a `histogram`
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object, this property is required.
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-=====
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+======
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`terms`::
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(Optional, <<search-aggregations-bucket-terms-aggregation,`terms`
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@@ -139,16 +139,16 @@ Stores values for <<keyword,keyword family>> and <<number,numeric>> fields.
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+
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.Properties of `terms`
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[%collapsible%open]
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-=====
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+======
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`fields`::
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(Required*, array of strings)
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Array of <<keyword,keyword family>> and <<number,numeric>> fields to store. If
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you specify a `terms` object, this property is required.
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+
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TIP: Avoid storing high-cardinality fields. High-cardinality fields can greatly
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-increase the size of the resulting rollup index.
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+increase the size of resulting rollup index.
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+======
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=====
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-====
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`metrics`::
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(Optional, array of objects)
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@@ -156,7 +156,7 @@ Collects and stores metrics for <<number,numeric>> fields.
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+
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.Properties of `metrics` objects
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[%collapsible%open]
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-====
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+=====
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`field`::
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(Required*, string)
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<<number,Numeric>> field to collect metrics for. If you specify a `metrics`
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@@ -177,7 +177,7 @@ required.
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NOTE: The `avg` metric stores both the `sum` and `value_count` values. This lets
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you accurately average rollups over larger time intervals. For example, you can
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accurately roll up hourly averages into daily averages.
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-====
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+=====
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`page_size`::
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(Optional, integer)
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James Rodewig