dianfu commented on a change in pull request #9653: [FLINK-14014][python] Introduce PythonScalarFunctionRunner to handle the communication with Python worker for Python ScalarFunction execution URL: https://github.com/apache/flink/pull/9653#discussion_r323331954
########## File path: flink-python/src/main/java/org/apache/flink/python/PythonFunctionRunner.java ########## @@ -0,0 +1,60 @@ +/* + * 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.flink.python; + +import org.apache.flink.annotation.Internal; + +/** + * The base interface of runner which is responsible for the execution of Python functions. + * + * @param <IN> Type of the input elements. + */ +@Internal +public interface PythonFunctionRunner<IN> { + + /** + * Prepares the Python function runner, such as preparing the Python execution environment, etc. + */ + void open() throws Exception; Review comment: I'm in favor of keeping them as they are very important part of the functionality of PythonFunctionRunner. The integration tests will be added in FLINK-14018. I will try to add some mock test in this PR. ---------------------------------------------------------------- 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: [email protected] With regards, Apache Git Services
