kowshik commented on a change in pull request #9001: URL: https://github.com/apache/kafka/pull/9001#discussion_r465572011
########## File path: clients/src/main/resources/common/message/UpdateFeaturesResponse.json ########## @@ -0,0 +1,33 @@ +// Licensed to the Apache Software Foundation (ASF) under one or more +// contributor license agreements. See the NOTICE file distributed with +// this work for additional information regarding copyright ownership. +// The ASF licenses this file to You under the Apache License, Version 2.0 +// (the "License"); you may not use this file except in compliance with +// the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +{ + "apiKey": 50, + "type": "response", + "name": "UpdateFeaturesResponse", + "validVersions": "0", + "flexibleVersions": "0+", + "fields": [ Review comment: I don't see that we consistently use a top level error code, so I will leave it as it is. ########## File path: clients/src/main/java/org/apache/kafka/clients/admin/Admin.java ########## @@ -1214,6 +1215,71 @@ default AlterClientQuotasResult alterClientQuotas(Collection<ClientQuotaAlterati */ AlterClientQuotasResult alterClientQuotas(Collection<ClientQuotaAlteration> entries, AlterClientQuotasOptions options); + /** + * Describes finalized as well as supported features. By default, the request is issued to any + * broker. It can be optionally directed only to the controller via DescribeFeaturesOptions + * parameter. This is particularly useful if the user requires strongly consistent reads of + * finalized features. + * <p> + * The following exceptions can be anticipated when calling {@code get()} on the future from the + * returned {@link DescribeFeaturesResult}: + * <ul> + * <li>{@link org.apache.kafka.common.errors.TimeoutException} + * If the request timed out before the describe operation could finish.</li> + * </ul> + * <p> + * @param options the options to use + * + * @return the {@link DescribeFeaturesResult} containing the result + */ + DescribeFeaturesResult describeFeatures(DescribeFeaturesOptions options); + + /** + * Applies specified updates to finalized features. This operation is not transactional so it + * may succeed for some features while fail for others. + * <p> + * The API takes in a map of finalized feature name to {@link FeatureUpdate} that needs to be + * applied. Each entry in the map specifies the finalized feature to be added or updated or + * deleted, along with the new max feature version level value. This request is issued only to + * the controller since the API is only served by the controller. The return value contains an + * error code for each supplied {@link FeatureUpdate}, and the code indicates if the update + * succeeded or failed in the controller. + * <ul> + * <li>Downgrade of feature version level is not a regular operation/intent. It is only allowed + * in the controller if the {@link FeatureUpdate} has the allowDowngrade flag set - setting this + * flag conveys user intent to attempt downgrade of a feature max version level. Note that + * despite the allowDowngrade flag being set, certain downgrades may be rejected by the + * controller if it is deemed impossible.</li> + * <li>Deletion of a finalized feature version is not a regular operation/intent. It could be + * done by setting the allowDowngrade flag to true in the {@link FeatureUpdate}, and, setting + * the max version level to be less than 1.</li> + * </ul> + *<p> + * The following exceptions can be anticipated when calling {@code get()} on the futures + * obtained from the returned {@link UpdateFeaturesResult}: + * <ul> + * <li>{@link org.apache.kafka.common.errors.ClusterAuthorizationException} + * If the authenticated user didn't have alter access to the cluster.</li> + * <li>{@link org.apache.kafka.common.errors.InvalidRequestException} Review comment: Answered below. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
