Add 9.1 docs

docs/reference/release-highlights.md

@@ -9,6 +9,10 @@ These are the important new features and changes in minor releases. Every releas
 
 For a list of detailed changes, including bug fixes, see the [GitHub project release notes](https://github.com/elastic/elasticsearch-java/releases).
 
+## 9.1.0 [release-highlights-910]
+
+[Release notes](/release-notes/9-1-0.md)
+
 ## 9.0.0 [release-highlights-900]
 
 [Release notes](/release-notes/9-0-0.md)
@@ -36,4 +40,4 @@ To view release notes for earlier versions, use the version dropdown in the top
 
 #### 8.15 [_version_8_15]
 
-[Release notes](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/8.15/release-highlights.html)
+[Release notes](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/8.15/release-highlights.html)

docs/release-notes/9-0-4.md

@@ -5,7 +5,7 @@ navigation_title: "9.0.4"
 
 Discover what changed in the 9.0.4 version of the java client. 
 
-### Features and enhancements [elasticsearch-java-client-900-features-enhancements]
+### Features and enhancements [elasticsearch-java-client-904-features-enhancements]
 
 ::::{dropdown} Added callbacks to Rest5Client builder
 Rest5ClientBuilder now has the same level of in depth configuration the Legacy RestClientBuilder has, allowing to customize the underlying Apache HttpClient through callback functions; for example, this is how to configure the IOReactor's thread count:

docs/release-notes/9-1-0.md

@@ -0,0 +1,75 @@
+---
+navigation_title: "9.1.0"
+---
+# Elasticsearch Java Client 9.1.0 [elasticsearch-java-client-910]
+
+Discover what changed in the 9.1.0 version of the Java client. 
+
+### Breaking changes [elasticsearch-java-client-910-breaking-changes]
+
+::::{dropdown} Map to NamedValue Highlight.fields  
+`fields` in `Highlight` was wrongly mapped as `List<Map>`, but the server doesn't actually accept more than one value, so the type has been changed to `List<NamedValue>`.
+
+**Action**<br> Change the builder to use the correct type.
+Example with `SearchRequest`:
+- Old
+    ```java
+    esClient.search(s -> s
+        .index("*")
+        .highlight(h -> h
+            .fields(Map.of("highlighter-field", HighlightField.of(hf -> hf...)))
+        )
+    ,Void.class);
+    ```
+- New
+    ```java
+    esClient.search(s -> s
+        .index("*")
+        .highlight(h -> h
+            .fields(NamedValue.of("highlighter-field", HighlightField.of(hf -> hf...)))
+        )
+    ,Void.class);
+    ``` 
+
+::::
+
+::::{dropdown} Map to List<Map> WeightedTokensQuery.tokens  
+`tokens` in `WeightedTokensQuery` was mapped as `Map`, but the server can actually accept more than one map, so the type has been changed to `List<Map>`.
+
+**Action**<br> Nothing should be changed since the builders for List also accept a single value.  
+::::
+
+::::
+
+::::{dropdown} Class name change: IndicesBlockStatus -> AddIndicesBlockStatus in AddBlockResponse
+`IndicesBlockStatus` was renamed to `AddIndicesBlockStatus` to avoid confusion with the new `RemoveIndicesBlockStatus`
+
+**Action**<br> Replace the missing class with the new class name.   
+::::
+
+### Features and enhancements [elasticsearch-java-client-910-features-enhancements]
+
+::::{dropdown} Opentelemetry update to stable conventions   
+Following the stable release of Opentelemetry's database conventions, the client was updated to use the correct attribute names.
+More details in the PR: https://github.com/elastic/elasticsearch-java/pull/1017  
+::::
+
+::::{dropdown} GetAliasResponse exception bug fix  
+`GetAliasesResponse` is a special case because it can return both an exception and the actual response, in case 2 aliases, 1 present and 1 missing, are added to `GetAliasesRequest`. The java client was unable to parse the response and used to throw a `TransportException`, this was fixed by adding the additional alias information to the `metadata` field in `ErrorCause`:
+```java
+try{
+    client.indices().getAlias(a -> a.name("test","test2"));
+}
+catch (ElasticsearchException e){
+    Map<String, JsonData> metadata = e.error().metadata();
+    JsonData index = metadata.get("example-index");
+    Map aliases = index.to(Map.class);
+    assertEquals("test", aliases.keySet().iterator().next());
+}
+```
+More details in the PR: https://github.com/elastic/elasticsearch-java/pull/1041  
+::::
+
+### Deprecations [elasticsearch-java-client-910-deprecations]
+
+Nothing was deprecated in this version of the client. 

docs/release-notes/index.md

@@ -12,3 +12,6 @@ To check for security updates, go to [Security announcements for the Elastic sta
 
 ## 9.0.0
 [Release notes](../release-notes/9-0-0.md)
+
+## 9.0.1
+[Release notes](../release-notes/9-1-0.md)

docs/release-notes/toc.yml

@@ -3,3 +3,4 @@ toc:
   - file: known-issues.md
   - file: 9-0-0.md
   - file: 9-0-4.md
+  - file: 9-1-0.md