cmccabe commented on code in PR #13280: URL: https://github.com/apache/kafka/pull/13280#discussion_r1162131601
########## server-common/src/main/java/org/apache/kafka/server/immutable/ImmutableMap.java: ########## @@ -0,0 +1,47 @@ +/* + * 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. + */ + +package org.apache.kafka.server.immutable; + +import java.util.Map; + +/** + * A persistent Hash-based Map wrapper. + * java.util.Map methods that mutate in-place will throw UnsupportedOperationException + * + * @param <K> the key type + * @param <V> the value type + */ +public interface ImmutableMap<K, V> extends Map<K, V> { Review Comment: I don't feel very strongly about this either way. I like the elegance of having a separate factory instead of static functions, but I do wonder if that will make it harder to do a quick replacement of the current implementation with the Vavr implementation (or whatever) and rerun the JMH benchmarks without changing anything else. Maybe it's fine as-is, though? -- 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. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
