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0a85d1fe03
These are breaking changes that were present in the release notes but the PR didn't include any "narrative long form" description for the docs.
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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