Fixing 9.0.0 release notes

Author: brianseeders

docs/release-notes/breaking-changes.md

@@ -16,7 +16,92 @@ To learn how to upgrade, check out <upgrade docs>.
 
 ## 9.0.0 [elasticsearch-900-breaking-changes]
 
-No breaking changes in this version.
+Aggregations:
+* Remove date histogram boolean support [#118484](https://github.com/elastic/elasticsearch/pull/118484)
+
+Allocation:
+* Increase minimum threshold in shard balancer [#115831](https://github.com/elastic/elasticsearch/pull/115831)
+* Remove `cluster.routing.allocation.disk.watermark.enable_for_single_data_node` setting [#114207](https://github.com/elastic/elasticsearch/pull/114207)
+* Remove cluster state from `/_cluster/reroute` response [#114231](https://github.com/elastic/elasticsearch/pull/114231) (issue: {es-issue}88978[#88978])
+
+Analysis:
+* Snowball stemmers have been upgraded [#114146](https://github.com/elastic/elasticsearch/pull/114146)
+* The 'german2' stemmer is now an alias for the 'german' snowball stemmer [#113614](https://github.com/elastic/elasticsearch/pull/113614)
+* The 'persian' analyzer has stemmer by default [#113482](https://github.com/elastic/elasticsearch/pull/113482) (issue: {es-issue}113050[#113050])
+* The Korean dictionary for Nori has been updated [#114124](https://github.com/elastic/elasticsearch/pull/114124)
+
+Authentication:
+* Configuring a bind DN in an LDAP or Active Directory (AD) realm without a corresponding bind password
+will prevent node from starting [#118366](https://github.com/elastic/elasticsearch/pull/118366)
+
+Cluster Coordination:
+* Remove unsupported legacy value for `discovery.type` [#112903](https://github.com/elastic/elasticsearch/pull/112903)
+
+EQL:
+* Set allow_partial_search_results=true by default [#120267](https://github.com/elastic/elasticsearch/pull/120267)
+
+Extract&Transform:
+* Restrict Connector APIs to manage/monitor_connector privileges [#119863](https://github.com/elastic/elasticsearch/pull/119863)
+
+Highlighting:
+* Remove support for deprecated `force_source` highlighting parameter [#116943](https://github.com/elastic/elasticsearch/pull/116943)
+
+Indices APIs:
+* Apply more strict parsing of actions in bulk API [#115923](https://github.com/elastic/elasticsearch/pull/115923)
+* Remove deprecated local attribute from alias APIs [#115393](https://github.com/elastic/elasticsearch/pull/115393)
+* Remove the ability to read frozen indices [#120108](https://github.com/elastic/elasticsearch/pull/120108)
+* Remove unfreeze REST endpoint [#119227](https://github.com/elastic/elasticsearch/pull/119227)
+
+Infra/Core:
+* Change Elasticsearch timeouts to 429 response instead of 5xx [#116026](https://github.com/elastic/elasticsearch/pull/116026)
+* Limit `ByteSizeUnit` to 2 decimals [#120142](https://github.com/elastic/elasticsearch/pull/120142)
+* Remove `client.type` setting [#118192](https://github.com/elastic/elasticsearch/pull/118192) (issue: {es-issue}104574[#104574])
+* Remove any references to org.elasticsearch.core.RestApiVersion#V_7 [#118103](https://github.com/elastic/elasticsearch/pull/118103)
+
+Infra/Logging:
+* Change `deprecation.elasticsearch` keyword to `elasticsearch.deprecation` [#117933](https://github.com/elastic/elasticsearch/pull/117933) (issue: {es-issue}83251[#83251])
+
+Infra/Metrics:
+* Deprecated tracing.apm.* settings got removed. [#119926](https://github.com/elastic/elasticsearch/pull/119926)
+
+Infra/REST API:
+* Output a consistent format when generating error json [#90529](https://github.com/elastic/elasticsearch/pull/90529) (issue: {es-issue}89387[#89387])
+
+Ingest Node:
+* Remove `ecs` option on `user_agent` processor [#116077](https://github.com/elastic/elasticsearch/pull/116077)
+* Remove ignored fallback option on GeoIP processor [#116112](https://github.com/elastic/elasticsearch/pull/116112)
+
+Logs:
+* Conditionally enable logsdb by default for data streams matching with logs-*-* pattern. [#121049](https://github.com/elastic/elasticsearch/pull/121049) (issue: {es-issue}106489[#106489])
+
+Machine Learning:
+* Disable machine learning on macOS x86_64 [#104125](https://github.com/elastic/elasticsearch/pull/104125)
+
+Mapping:
+* Remove support for type, fields, `copy_to` and boost in metadata field definition [#118825](https://github.com/elastic/elasticsearch/pull/118825)
+* Turn `_source` meta fieldmapper's mode attribute into a no-op [#119072](https://github.com/elastic/elasticsearch/pull/119072) (issue: {es-issue}118596[#118596])
+
+Search:
+* Adjust `random_score` default field to `_seq_no` field [#118671](https://github.com/elastic/elasticsearch/pull/118671)
+* Change Semantic Text To Act Like A Normal Text Field [#120813](https://github.com/elastic/elasticsearch/pull/120813)
+* Remove legacy params from range query [#116970](https://github.com/elastic/elasticsearch/pull/116970)
+
+Snapshot/Restore:
+* Remove deprecated `xpack.searchable.snapshot.allocate_on_rolling_restart` setting [#114202](https://github.com/elastic/elasticsearch/pull/114202)
+
+TLS:
+* Remove TLSv1.1 from default protocols [#121731](https://github.com/elastic/elasticsearch/pull/121731)
+
+Transform:
+* Remove `data_frame_transforms` roles [#117519](https://github.com/elastic/elasticsearch/pull/117519)
+
+Vector Search:
+* Remove old `_knn_search` tech preview API in v9 [#118104](https://github.com/elastic/elasticsearch/pull/118104)
+
+Watcher:
+* Removing support for types field in watcher search [#120748](https://github.com/elastic/elasticsearch/pull/120748)
+
+
 
 ## 9.1.0 [elasticsearch-910-breaking-changes]