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@@ -0,0 +1,284 @@
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+[[release-notes-8.1.0]]
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+== {es} version 8.1.0
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+
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+coming[8.1.0]
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+
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+Also see <<breaking-changes-8.1,Breaking changes in 8.1>>.
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+
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+[[breaking-8.1.0]]
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+[float]
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+=== Breaking changes
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+
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+Geo::
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+* Fields API should return normalize geometries {es-pull}80649[#80649] (issues: {es-issue}79232[#79232], {es-issue}63739[#63739])
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+
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+[[bug-8.1.0]]
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+[float]
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+=== Bug fixes
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+
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+Aggregations::
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+* Fix: reduce float and half-float values to their stored precision {es-pull}83213[#83213]
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+* Reenable `BooleanTermsIT` {es-pull}83421[#83421] (issue: {es-issue}83351[#83351])
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+
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+Allocation::
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+* Fix `updateMinNode` condition {es-pull}80403[#80403] (issue: {es-issue}41194[#41194])
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+* Make `*.routing.allocation.*` list-based setting {es-pull}80420[#80420] (issue: {es-issue}77773[#77773])
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+* Permit metadata updates on flood-stage-blocked indices {es-pull}81781[#81781]
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+* Reroute after cluster recovery {es-pull}82856[#82856] (issue: {es-issue}82456[#82456])
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+
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+Authorization::
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+* Capture anonymous roles when creating API keys {es-pull}81427[#81427] (issue: {es-issue}81024[#81024])
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+* Extend fleet-server service account privileges {es-pull}82600[#82600]
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+
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+Autoscaling::
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+* Fix autoscaling of follower data streams {es-pull}83302[#83302] (issue: {es-issue}82857[#82857])
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+
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+Geo::
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+* Handle bounds properly when grid tiles crosses the dateline {es-pull}83348[#83348] (issue: {es-issue}83299[#83299])
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+
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+Infra/Core::
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+* Copy `trace.id` in threadcontext stash {es-pull}83218[#83218]
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+
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+Infra/Scripting::
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+* Fix duplicated allow lists upon script engine creation {es-pull}82820[#82820] (issue: {es-issue}82778[#82778])
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+* Fix plumbing in double and keyword runtime fields for the scripting fields API {es-pull}83392[#83392]
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+
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+Machine Learning::
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+* Correctly capture min stats for `inference.ingest_processors` in ML usage {es-pull}82352[#82352]
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+* Fail queued inference requests with cause if the process crashes {es-pull}81584[#81584]
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+* Fix NLP tokenization `never_split` handling around punctuation {es-pull}82982[#82982]
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+* Fix `ZeroShotClassificationConfig` update mixing fields {es-pull}82848[#82848]
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+* Fixes `categorize_text` parameter validation to be parse order independent {es-pull}82628[#82628] (issue: {es-issue}82629[#82629])
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+* Return `zxx` for `lang_ident_model_1` if no valid text is found for language identification {es-pull}82746[#82746] (issue: {es-issue}81933[#81933])
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+* Validate vocabulary on model deployment {es-pull}81548[#81548] (issue: {es-issue}81470[#81470])
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+
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+Mapping::
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+* Add support for sub-fields to `search_as_you_type` fields {es-pull}82430[#82430] (issue: {es-issue}56326[#56326])
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+* Better exception message for `MappingParser.parse` {es-pull}80696[#80696]
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+
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+Network::
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+* Throw `NoSeedNodeLeftException` on proxy failure {es-pull}80961[#80961] (issue: {es-issue}80898[#80898])
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+
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+Recovery::
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+* Add missing `indices.recovery.internal_action_retry_timeout` to list of settings {es-pull}83354[#83354]
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+* Add missing max overcommit factor to list of (dynamic) settings {es-pull}83350[#83350]
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+
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+SQL::
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+* Fix txt format for empty result sets {es-pull}83376[#83376]
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+
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+Search::
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+* Returns valid PIT when no index matched {es-pull}83424[#83424]
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+
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+Security::
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+* Add validation for API key role descriptors {es-pull}82049[#82049] (issue: {es-issue}67311[#67311])
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+
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+Snapshot/Restore::
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+* Adjust `LinuxFileSystemNatives.allocatedSizeInBytes` for aarch64 architectures {es-pull}81376[#81376] (issues: {es-issue}80437[#80437], {es-issue}81362[#81362])
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+* Distinguish "missing repository" from "missing repository plugin" {es-pull}82457[#82457] (issue: {es-issue}81758[#81758])
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+* Move get snapshots serialization to management pool {es-pull}83215[#83215]
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+
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+TSDB::
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+* Fix time series timestamp meta missing {es-pull}80695[#80695]
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+
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+Transform::
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+* Fix NPE in transform version check {es-pull}81756[#81756]
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+* Fix condition on which the transform stops processing buckets {es-pull}82852[#82852]
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+* Prevent stopping of transforms due to threadpool limitation {es-pull}81912[#81912] (issue: {es-issue}81796[#81796])
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+
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+[[deprecation-8.1.0]]
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+[float]
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+=== Deprecations
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+
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+CRUD::
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+* Bulk actions JSON must be well-formed {es-pull}78876[#78876] (issue: {es-issue}43774[#43774])
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+
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+Cluster Coordination::
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+* Remove last few mentions of Zen discovery {es-pull}80410[#80410]
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+
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+[[enhancement-8.1.0]]
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+[float]
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+=== Enhancements
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+
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+Aggregations::
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+* Add an aggregator for IPv4 and IPv6 subnets {es-pull}82410[#82410]
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+* Fail shards early when we can detect a type missmatch {es-pull}79869[#79869] (issue: {es-issue}72276[#72276])
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+* Optimize `significant_text` aggregation to only parse the field it requires from `_source` {es-pull}79651[#79651]
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+
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+Allocation::
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+* Identify other node in `SameShardAllocDec` message {es-pull}82890[#82890] (issue: {es-issue}80767[#80767])
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+* Make `AllocationService#adaptAutoExpandReplicas` Faster {es-pull}83092[#83092]
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+* Speed up same host check {es-pull}80767[#80767]
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+
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+Analysis::
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+* Expose Japanese completion filter to kuromoji analysis plugin {es-pull}81858[#81858]
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+
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+Authentication::
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+* Enable `run_as` for all authentication schemes {es-pull}79809[#79809]
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+* Return API key name in `_authentication` response {es-pull}78946[#78946] (issue: {es-issue}70306[#70306])
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+
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+Authorization::
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+* Avoid loading authorized indices when requested indices are all concrete names {es-pull}81237[#81237]
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+* Optimize DLS bitset building for `matchAll` query {es-pull}81030[#81030] (issue: {es-issue}80904[#80904])
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+
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+Cluster Coordination::
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+* Add detail to slow cluster state warning message {es-pull}83221[#83221]
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+* Batch Index Settings Update Requests {es-pull}82896[#82896] (issue: {es-issue}79866[#79866])
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+* Improve node-join task descriptions {es-pull}80090[#80090]
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+* Make `PeerFinder` log messages happier {es-pull}83222[#83222]
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+* More compact serialization of metadata {es-pull}82608[#82608] (issue: {es-issue}77466[#77466])
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+* Paginate persisted cluster state {es-pull}78875[#78875]
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+* Reduce verbosity-increase timeout to 3 minutes {es-pull}81118[#81118]
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+* Use network recycler for publications {es-pull}80650[#80650] (issue: {es-issue}80111[#80111])
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+
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+Data streams::
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+* Defer reroute when autocreating datastream {es-pull}82412[#82412] (issue: {es-issue}82159[#82159])
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+
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+ILM+SLM::
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+* Expose the index age in ILM explain output {es-pull}81273[#81273] (issue: {es-issue}64429[#64429])
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+
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+Indices APIs::
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+* Batch auto create index cluster state updates {es-pull}82159[#82159]
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+* Expose 'features' option in Get Index API {es-pull}83083[#83083] (issue: {es-issue}82948[#82948])
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+* Expose index health and status to the `_stats` API {es-pull}81954[#81954] (issue: {es-issue}80413[#80413])
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+* Force merge REST API support `wait_for_completion` {es-pull}80463[#80463] (issues: {es-issue}80129[#80129], {es-issue}80129[#80129])
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+
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+Infra/Circuit Breakers::
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+* Allow dynamically changing the `use_real_memory` setting {es-pull}78288[#78288] (issue: {es-issue}77324[#77324])
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+
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+Infra/Core::
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+* Use `VarHandles` for number conversions {es-pull}80367[#80367] (issue: {es-issue}78823[#78823])
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+* Use `VarHandles` in `ByteUtils` {es-pull}80442[#80442] (issue: {es-issue}78823[#78823])
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+* `FilterPathBasedFilter` support match fieldname with dot {es-pull}83178[#83178] (issues: {es-issue}83148[#83148], {es-issue}83152[#83152])
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+
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+Infra/REST API::
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+* Allow for customised content-type validation {es-pull}80906[#80906] (issue: {es-issue}80482[#80482])
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+
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+Infra/Scripting::
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+* Add '$' syntax as a shortcut for 'field' in Painless {es-pull}80518[#80518]
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+* Add `BinaryDocValuesField` to replace `BytesRef` `(ScriptDocValues)` {es-pull}79760[#79760]
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+* Add a geo point field for the scripting fields api {es-pull}81395[#81395]
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+* Add date fields to the scripting fields api {es-pull}81272[#81272]
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+* Add half float mapping to the scripting fields API {es-pull}82294[#82294]
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+* Add scaled float to the scripting fields API {es-pull}82275[#82275]
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+* Add support for `GeoShape` to the scripting fields API {es-pull}81617[#81617]
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+* Fields API for IP mapped type {es-pull}81396[#81396]
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+* Fields API for byte, double, float, integer, long, short {es-pull}81126[#81126] (issue: {es-issue}79105[#79105])
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+* Fields API for flattened mapped type {es-pull}82590[#82590]
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+* Fields API for x-pack `constant_keyword` {es-pull}82292[#82292]
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+* Fields API for x-pack version, doc version, seq no, mumur3 {es-pull}81476[#81476]
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+* Improve support for joda datetime to java datetime in Painless {es-pull}83099[#83099]
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+* Keyword fields API support {es-pull}81266[#81266]
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+* Make wildcard accessible from the scripting field API {es-pull}82763[#82763]
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+* Ordinal field data plumbing {es-pull}80970[#80970] (issue: {es-issue}79105[#79105])
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+* Support boolean fields in Fields API {es-pull}80043[#80043] (issue: {es-issue}79105[#79105])
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+* Time series compile and cache evict metrics {es-pull}79078[#79078] (issue: {es-issue}62899[#62899])
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+
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+Infra/Settings::
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+* Optimize duplicated code block in `MetadataUpdateSettingsService` {es-pull}82048[#82048]
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+
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+Machine Learning::
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+* Add ability to update the truncation option at inference {es-pull}80267[#80267]
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+* Add error counts to trained model stats {es-pull}82705[#82705]
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+* Add latest search interval to datafeed stats {es-pull}82620[#82620] (issue: {es-issue}82405[#82405])
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+* Adds new MPNet tokenization for NLP models {es-pull}82234[#82234]
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+* Force delete trained models {es-pull}80595[#80595]
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+* Improve error message on starting scrolling datafeed with no matching indices {es-pull}81069[#81069] (issue: {es-issue}81013[#81013])
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+* Report thread settings per node for trained model deployments {es-pull}81723[#81723] (issue: {es-issue}81149[#81149])
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+* Set default value of 30 days for model prune window {es-pull}81377[#81377]
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+* Track token positions and use source string to tag NER entities {es-pull}81275[#81275]
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+* Warn when creating job with an unusual bucket span {es-pull}82145[#82145] (issue: {es-issue}81645[#81645])
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+
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+Mapping::
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+* Allow doc-values only search on geo_point fields {es-pull}83395[#83395]
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+* Implement all queries on doc-values only keyword fields {es-pull}83404[#83404]
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+* Optimize source filtering in `SourceFieldMapper` {es-pull}81970[#81970] (issues: {es-issue}77154[#77154], {es-issue}81575[#81575])
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+
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+Monitoring::
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+* Add Enterprise Search monitoring index templates {es-pull}82743[#82743]
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+
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+Network::
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+* Report close connection exceptions at INFO {es-pull}81768[#81768] (issues: {es-issue}51612[#51612], {es-issue}66473[#66473])
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+* Serialize outbound messages on netty buffers {es-pull}80111[#80111]
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+* Track histogram of transport handling times {es-pull}80581[#80581] (issue: {es-issue}80428[#80428])
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+
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+Recovery::
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+* Adjust `indices.recovery.max_bytes_per_sec` according to external settings {es-pull}82819[#82819]
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+
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+SQL::
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+* Extend Tableau connector to reconnect with catalog {es-pull}81321[#81321]
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+
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+Search::
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+* Add `scripted_metric` agg context to `unsigned_long` {es-pull}64422[#64422] (issue: {es-issue}64347[#64347])
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+* Add field usage support for vectors {es-pull}80608[#80608]
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+* Allow doc-values only search on boolean fields {es-pull}82925[#82925] (issues: {es-issue}82409[#82409], {es-issue}81210[#81210], {es-issue}52728[#52728])
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+* Allow doc-values only search on date types {es-pull}82602[#82602] (issues: {es-issue}82409[#82409], {es-issue}81210[#81210], {es-issue}52728[#52728])
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+* Allow doc-values only search on ip fields {es-pull}82929[#82929] (issues: {es-issue}82409[#82409], {es-issue}81210[#81210], {es-issue}52728[#52728])
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+* Allow doc-values only search on keyword fields {es-pull}82846[#82846] (issues: {es-issue}82409[#82409], {es-issue}81210[#81210], {es-issue}52728[#52728])
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+* Allow doc-values only search on number types {es-pull}82409[#82409] (issues: {es-issue}81210[#81210], {es-issue}52728[#52728])
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+* Rewrite `match` and `match_phrase` queries to `term` queries on `keyword` fields {es-pull}82612[#82612] (issue: {es-issue}82515[#82515])
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+* Short cut if reader has point values {es-pull}80268[#80268]
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+* Support combining `_shards` preference param with `<custom-string>` {es-pull}80024[#80024] (issue: {es-issue}80021[#80021])
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+
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+Security::
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+* Activate user profile API {es-pull}82400[#82400]
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+* Add an initial `ProfileService` for user profiles {es-pull}81899[#81899]
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+* Add new system index for user profile documents {es-pull}81355[#81355]
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+* Add update user profile data API {es-pull}82772[#82772]
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+* Add user profile API for get profile by UID {es-pull}81910[#81910]
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+* Update Kibana system user privileges {es-pull}82781[#82781]
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+
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+Snapshot/Restore::
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+* Add Linux x86-64bits native method to retrieve the number of allocated bytes on disk for a file {es-pull}80437[#80437] (issue: {es-issue}79698[#79698])
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+
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+Stats::
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+* Add index pressure stats in cluster stats {es-pull}80303[#80303] (issue: {es-issue}79788[#79788])
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+* Optimize `getIndices` in `IndicesSegmentResponse` {es-pull}80064[#80064]
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+* Speed up `MappingStats` Computation on Coordinating Node {es-pull}82830[#82830]
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+
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+TSDB::
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+* Add `_tsid` field to `time_series` indices {es-pull}80276[#80276]
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+* Make time boundaries settings required in TSDB indices {es-pull}81146[#81146]
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+
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+Transform::
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+* Introduce `deduce_mappings` transform setting {es-pull}82256[#82256] (issue: {es-issue}82559[#82559])
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+* Make it possible to clear retention policy on an existing transform {es-pull}82703[#82703] (issue: {es-issue}82560[#82560])
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+* Report transforms without config as erroneous {es-pull}81141[#81141] (issue: {es-issue}80955[#80955])
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+
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+[[feature-8.1.0]]
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+[float]
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+=== New features
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+
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+Authentication::
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+* Initial version of JWT Realm {es-pull}82175[#82175]
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+* Introduce domain setting to associate realms {es-pull}81968[#81968]
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+
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+Distributed::
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+* Add desired nodes API {es-pull}82975[#82975]
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+
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+Geo::
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+* New `GeoHexGrid` aggregation {es-pull}82924[#82924]
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+
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+Health::
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+* Model for the new health reporting api {es-pull}83398[#83398]
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+
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+TSDB::
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+* Handle `fields.with.dots` in `routing_path` {es-pull}83148[#83148]
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+
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+Transform::
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+* Add transform reset API {es-pull}79828[#79828] (issue: {es-issue}75768[#75768])
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+
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+[[upgrade-8.1.0]]
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+[float]
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+=== Upgrades
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+
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+Geo::
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+* Update vector tiles google protobuf to 3.16.1 {es-pull}83402[#83402]
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+
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+Network::
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+* Upgrade to Netty 4.1.73 {es-pull}82844[#82844]
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+
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+Packaging::
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+* Bump bundled JDK to 17.0.2+8 {es-pull}83243[#83243] (issue: {es-issue}83242[#83242])
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+
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James Rodewig