58 lines
2.2 KiB
Plaintext
58 lines
2.2 KiB
Plaintext
[float]
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[[breaking_70_aggregations_changes]]
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=== Aggregations changes
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//NOTE: The notable-breaking-changes tagged regions are re-used in the
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//Installation and Upgrade Guide
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//tag::notable-breaking-changes[]
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// end::notable-breaking-changes[]
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[float]
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==== Deprecated `global_ordinals_hash` and `global_ordinals_low_cardinality` execution hints for terms aggregations have been removed
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These `execution_hint` are removed and should be replaced by `global_ordinals`.
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[float]
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==== `search.max_buckets` in the cluster setting
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The dynamic cluster setting named `search.max_buckets` now defaults
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to 10,000 (instead of unlimited in the previous version).
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Requests that try to return more than the limit will fail with an exception.
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[float]
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==== `missing` option of the `composite` aggregation has been removed
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The `missing` option of the `composite` aggregation, deprecated in 6.x,
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has been removed. `missing_bucket` should be used instead.
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[float]
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==== Replaced `params._agg` with `state` context variable in scripted metric aggregations
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The object used to share aggregation state between the scripts in a Scripted Metric
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Aggregation is now a variable called `state` available in the script context, rather than
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being provided via the `params` object as `params._agg`.
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[float]
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==== Make metric aggregation script parameters `reduce_script` and `combine_script` mandatory
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The metric aggregation has been changed to require these two script parameters to ensure users are
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explicitly defining how their data is processed.
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[float]
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==== `percentiles` and `percentile_ranks` now return `null` instead of `NaN`
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The `percentiles` and `percentile_ranks` aggregations used to return `NaN` in
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the response if they were applied to an empty set of values. Because `NaN` is
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not officially supported by JSON, it has been replaced with `null`.
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[float]
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==== `stats` and `extended_stats` now return 0 instead of `null` for zero docs
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When the `stats` and `extended_stats` aggregations collected zero docs (`doc_count: 0`),
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their value would be `null`. This was in contrast with the `sum` aggregation which
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would return `0`. The `stats` and `extended_stats` aggs are now consistent with
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`sum` and also return zero.
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