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ASF GitHub Bot commented on FLINK-7065: --------------------------------------- Github user XuPingyong commented on a diff in the pull request: https://github.com/apache/flink/pull/4273#discussion_r131918248 --- Diff: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/environment/StreamGraphExecutor.java --- @@ -0,0 +1,52 @@ +/* + * 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.streaming.api.environment; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.api.common.Executor; +import org.apache.flink.api.common.ExecutorFactory; +import org.apache.flink.api.common.JobExecutionResult; +import org.apache.flink.streaming.api.graph.StreamGraph; + +/** + * A StreamGraphExecutor executes a StreamGraph. + * + * <p>The specific implementation (such as the org.apache.flink.client.LocalExecutor + * and org.apache.flink.client.RemoteExecutor) is created by {@link ExecutorFactory}</p> + * + */ +@Internal +public interface StreamGraphExecutor extends Executor { + + /** + * Execute the given program. + * + * <p>If the executor has not been started before, then this method will start the + * executor and stop it after the execution has completed. This implies that one needs + * to explicitly start the executor for all programs where multiple dataflow parts + * depend on each other. Otherwise, the previous parts will no longer + * be available, because the executor immediately shut down after the execution.</p> + * + * @param streamGraph The streamGraph to execute. + * @return The execution result, containing for example the net runtime of the program, and the accumulators. + * + * @throws Exception Thrown, if job submission caused an exception. + */ + JobExecutionResult executeStreamGraph(StreamGraph streamGraph) throws Exception; --- End diff -- Like PlanExecutor, Exception is still be throwed, which may be mixed with multi exception types. > separate the flink-streaming-java module from flink-clients > ------------------------------------------------------------ > > Key: FLINK-7065 > URL: https://issues.apache.org/jira/browse/FLINK-7065 > Project: Flink > Issue Type: Improvement > Components: DataStream API > Reporter: Xu Pingyong > Assignee: Xu Pingyong > > Motivation: > It is not good that "flink-streaming-java" module depends on > "flink-clients". Flink-clients should see something in "flink-streaming-java". > Related Change: > 1. LocalStreamEnvironment and RemoteStreamEnvironment can also execute > a job by the executors(LocalExecutor and RemoteExecutor). Introduce > StreamGraphExecutor which executors a streamGraph as PlanExecutor executors > the plan. StreamGraphExecutor and PlanExecutor all extend Executor. > 2. Introduce StreamExecutionEnvironmentFactory which works similarly > to ContextEnvironmentFactory in flink-clients. > When a object of ContextEnvironmentFactory, > OptimizerPlanEnvironmentFactory or PreviewPlanEnvironmentFactory is set into > ExecutionEnvironment(by calling initializeContextEnvironment), the relevant > StreamEnvFactory is alsot set into StreamExecutionEnvironment. It is similar > when calling unsetContext. > -- This message was sent by Atlassian JIRA (v6.4.14#64029)