Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/1066#discussion_r39253434
--- Diff:
flink-tests/src/test/java/org/apache/flink/test/javaApiOperators/RemoteEnvironmentITCase.java
---
@@ -0,0 +1,164 @@
+/*
+ * 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.test.javaApiOperators;
+
+import org.apache.flink.api.common.functions.RichMapPartitionFunction;
+import org.apache.flink.api.common.io.GenericInputFormat;
+import org.apache.flink.api.common.operators.util.TestNonRichInputFormat;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.java.io.LocalCollectionOutputFormat;
+import org.apache.flink.client.program.ProgramInvocationException;
+import org.apache.flink.configuration.ConfigConstants;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.core.io.GenericInputSplit;
+import org.apache.flink.test.util.ForkableFlinkMiniCluster;
+import org.apache.flink.util.Collector;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
+@SuppressWarnings("serial")
+public class RemoteEnvironmentITCase {
+
+ private static final int TM_SLOTS = 4;
+
+ private static final int NUM_TM = 1;
+
+ private static final int USER_DOP = 2;
+
+ private static final String INVALID_STARTUP_TIMEOUT = "0.001 ms";
+
+ private static final String VALID_STARTUP_TIMEOUT = "100 s";
+
+ private static ForkableFlinkMiniCluster cluster;
+
+ @BeforeClass
+ public static void setupCluster() {
+ try {
+ Configuration config = new Configuration();
+
config.setInteger(ConfigConstants.LOCAL_NUMBER_TASK_MANAGER, NUM_TM);
+
config.setInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, TM_SLOTS);
+ cluster = new ForkableFlinkMiniCluster(config, false);
+ cluster.start();
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ fail("Error starting test cluster: " + e.getMessage());
+ }
+ }
+
+ @AfterClass
+ public static void tearDownCluster() {
+ try {
+ cluster.stop();
+ }
+ catch (Throwable t) {
+ t.printStackTrace();
+ fail("Cluster shutdown caused an exception: " +
t.getMessage());
+ }
+ }
+
+ /**
+ * Ensure that that Akka configuration parameters can be set.
+ */
+ @Test(expected=IllegalArgumentException.class)
+ public void testInvalidAkkaConfiguration() throws Throwable {
+ Configuration config = new Configuration();
+ config.setString(ConfigConstants.AKKA_STARTUP_TIMEOUT,
INVALID_STARTUP_TIMEOUT);
+
+ final ExecutionEnvironment env =
ExecutionEnvironment.createRemoteEnvironment(
+ cluster.hostname(),
+ cluster.getLeaderRPCPort(),
+ config
+ );
+ env.getConfig().disableSysoutLogging();
+
+ DataSet<String> result = env.createInput(new
TestNonRichInputFormat());
+ result.output(new LocalCollectionOutputFormat<String>(new
ArrayList<String>()));
+ try {
+ env.execute();
+ Assert.fail("Program should not run successfully, cause
of invalid akka settings.");
+ } catch (ProgramInvocationException ex) {
+ throw ex.getCause();
+ }
+ }
+
+ /**
+ * Ensure that the program parallelism can be set even if the
configuration is supplied.
+ */
+ @Test
+ public void testUserSpecificParallelism() throws Exception {
+ Configuration config = new Configuration();
+ config.setString(ConfigConstants.AKKA_STARTUP_TIMEOUT,
VALID_STARTUP_TIMEOUT);
+
+ final ExecutionEnvironment env =
ExecutionEnvironment.createRemoteEnvironment(
+ cluster.hostname(),
+ cluster.getLeaderRPCPort(),
+ config
+ );
+ env.setParallelism(USER_DOP);
+ env.getConfig().disableSysoutLogging();
+
+ DataSet<Integer> result = env.createInput(new
ParallelismDependentInputFormat())
+ .rebalance()
+ .mapPartition(new
RichMapPartitionFunction<Integer, Integer>() {
+ @Override
+ public void
mapPartition(Iterable<Integer> values, Collector<Integer> out) throws Exception
{
+
out.collect(getRuntimeContext().getIndexOfThisSubtask());
+ }
+ });
+ List<Integer> resultCollection = new ArrayList<Integer>();
+ result.output(new
LocalCollectionOutputFormat<Integer>(resultCollection));
--- End diff --
Here you can also use `result.collect()` to obtain a list of integers.
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