73 lines
3.4 KiB
Plaintext
73 lines
3.4 KiB
Plaintext
[float]
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[[breaking_80_search_changes]]
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=== Search 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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==== Removal of types
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The `/{index}/{type}/_search`, `/{index}/{type}/_msearch`, `/{index}/{type}/_search/template` and `/{index}/{type}/_msearch/template` REST endpoints have been removed in favour of `/{index}/_search`, `/{index}/_msearch`, `/{index}/_search/template` and `/{index}/_msearch/template`; since indexes no longer contain types, these typed endpoints are obsolete..
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The `/{index}/{type}/_termvectors`, `/{index}/{type}/{id}/_termvectors` and `/{index}/{type}/_mtermvectors` REST endpoints have been removed in favour of `/{index}/_termvectors`, `/{index}/{id}/_termvectors` and `/{index}/_mtermvectors`; since indexes no longer contain types, these typed endpoints are obsolete..
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The `/{index}/{type}/{doc}` and `/{index}/{type}/_mget` REST endpoints have been removed in favour of `/{index}/_doc/{doc}` and `/{index}/_mget`; since indexes no longer contain types, these typed endpoints are obsolete.
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[float]
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==== Removal of queries
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The `common` query, deprecated in 7.x, has been removed in 8.0.
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The same functionality can be achieved by the `match` query if the total number of hits is not tracked.
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[float]
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===== Removal of query parameters
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The `cutoff_frequency` parameter, deprecated in 7.x, has been removed in 8.0 from `match` and `multi_match` queries.
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The same functionality can be achieved without any configuration provided that the total number of hits is not tracked.
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[float]
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===== Removal of sort parameters
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The `nested_filter` and `nested_path` options, deprecated in 6.x, have been removed in favor of the `nested` context.
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[float]
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===== Shard allocation awareness in Search and Get requests
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{es} will no longer prefer using shards in the same location (with the same awareness attribute values) to process
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`_search` and `_get` requests. Adaptive replica selection (activated by default in this version) will route requests
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more efficiently using the service time of prior inter-node communications.
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[float]
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==== Removal of sparse vector fields
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The `sparse_vector` field type was deprecated in 7.6 and is now removed in
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8.0. We have not seen much interest in this experimental field type, and don't
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see a clear use case as it's currently designed. If you have feedback or
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suggestions around sparse vector functionality, please let us know through
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GitHub or the 'discuss' forums.
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[float]
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==== Update to vector function signatures
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The vector functions of the form `function(query, doc['field'])` were
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deprecated in 7.6, and are now removed in 8.x. The form
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`function(query, 'field')` should be used instead. For example,
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`cosineSimilarity(query, doc['field'])` is replaced by
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`cosineSimilarity(query, 'field')`.
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[float]
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==== Object format for `indices_boost`
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The `indices_boost` option in the search request used to accept the boosts
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both as an object and as an array. The object format has been deprecated since
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5.2 and is now removed in 8.0.
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[float]
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==== Removal of `use_field_mapping` for docvalues fields
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In 7.0, we began formatting `docvalue_fields` by default using each field's
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mapping definition. To ease the transition from 6.x, we added the format
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option `use_field_mapping`. This parameter was deprecated in 7.0, and is now
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removed in 8.0.
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