[GitHub] flink pull request #4510: [FLINK-7124] [flip-6] Add test to verify rescaling...

[tillrohrmann <gi...@git.apache.org>]

Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4510#discussion_r137005513
  
    --- Diff: flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/ExecutionGraphRescalingTest.java ---
    @@ -0,0 +1,235 @@
    +/*
    + * 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.runtime.executiongraph;
    +
    +import org.apache.flink.api.common.ExecutionConfig;
    +import org.apache.flink.configuration.Configuration;
    +import org.apache.flink.metrics.groups.UnregisteredMetricsGroup;
    +import org.apache.flink.runtime.akka.AkkaUtils;
    +import org.apache.flink.runtime.checkpoint.StandaloneCheckpointRecoveryFactory;
    +import org.apache.flink.runtime.executiongraph.restart.NoRestartStrategy;
    +import org.apache.flink.runtime.io.network.partition.ResultPartitionType;
    +import org.apache.flink.runtime.jobgraph.DistributionPattern;
    +import org.apache.flink.runtime.jobgraph.JobGraph;
    +import org.apache.flink.runtime.jobgraph.JobVertex;
    +import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
    +import org.apache.flink.runtime.jobmanager.scheduler.Scheduler;
    +import org.apache.flink.runtime.testingUtils.TestingUtils;
    +
    +import org.junit.Ignore;
    +import org.junit.Test;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +import java.util.Arrays;
    +import java.util.Collections;
    +
    +import static org.junit.Assert.assertEquals;
    +import static org.junit.Assert.fail;
    +
    +/**
    + * This class contains tests that verify when rescaling a {@link JobGraph},
    + * constructed {@link ExecutionGraph}s are correct.
    + */
    +public class ExecutionGraphRescalingTest {
    +
    +	private static final Logger TEST_LOGGER = LoggerFactory.getLogger(ExecutionGraphRescalingTest.class);
    +
    +	@Test
    +	public void testExecutionGraphArbitraryDopConstructionTest() throws Exception {
    +
    +		final Configuration config = new Configuration();
    +
    +		final JobVertex[] jobVertices = createVerticesForSimpleBipartiteJobGraph();
    +		final JobGraph jobGraph = new JobGraph(jobVertices);
    +
    +		// TODO rescaling the JobGraph is currently only supported if the
    +		// TODO configured parallelism is ExecutionConfig.PARALLELISM_AUTO_MAX.
    +		// TODO this limitation should be removed.
    --- End diff --
    
    Why is this the case? I think we should remove this limitation as stated by your TODO.


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