flink-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From mbalassi <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-2423] [streaming] ITCase for checkpoint...
Date Tue, 04 Aug 2015 08:47:08 GMT
Github user mbalassi commented on a diff in the pull request:

    https://github.com/apache/flink/pull/980#discussion_r36168137
  
    --- Diff: flink-tests/src/test/java/org/apache/flink/test/checkpointing/StreamCheckpointNotifierITCase.java
---
    @@ -0,0 +1,429 @@
    +/*
    + * 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.checkpointing;
    +
    +import org.apache.flink.api.common.functions.FilterFunction;
    +import org.apache.flink.api.common.functions.RichMapFunction;
    +import org.apache.flink.api.common.functions.RichReduceFunction;
    +import org.apache.flink.api.common.state.OperatorState;
    +import org.apache.flink.configuration.ConfigConstants;
    +import org.apache.flink.configuration.Configuration;
    +import org.apache.flink.streaming.api.checkpoint.CheckpointNotifier;
    +import org.apache.flink.streaming.api.checkpoint.Checkpointed;
    +import org.apache.flink.streaming.api.datastream.DataStream;
    +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
    +import org.apache.flink.streaming.api.functions.co.RichCoFlatMapFunction;
    +import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;
    +import org.apache.flink.streaming.api.functions.source.ParallelSourceFunction;
    +import org.apache.flink.streaming.api.functions.source.RichSourceFunction;
    +import org.apache.flink.test.util.ForkableFlinkMiniCluster;
    +import org.apache.flink.util.Collector;
    +import org.junit.AfterClass;
    +import org.junit.BeforeClass;
    +import org.junit.Test;
    +
    +import java.io.IOException;
    +import java.util.ArrayList;
    +import java.util.HashMap;
    +import java.util.HashSet;
    +import java.util.List;
    +import java.util.Map;
    +import java.util.Random;
    +
    +import static org.junit.Assert.assertFalse;
    +import static org.junit.Assert.assertTrue;
    +import static org.junit.Assert.fail;
    +
    +/**
    + * Integration test for the {@link CheckpointNotifier} interface. The test ensures that
    + * {@link CheckpointNotifier#notifyCheckpointComplete(long)} is called for some completed
    + * checkpoints, that it is called at most once for any checkpoint id and that it is not
    + * called for a deliberately failed checkpoint.
    + *
    + * <p>
    + * Note that as a result of doing the checks on the task level there is no way to verify
    + * that the {@link CheckpointNotifier#notifyCheckpointComplete(long)} is called for every
    + * successfully completed checkpoint.
    + */
    +@SuppressWarnings("serial")
    +public class StreamCheckpointNotifierITCase {
    +
    +	private static final int NUM_TASK_MANAGERS = 2;
    +	private static final int NUM_TASK_SLOTS = 3;
    +	private static final int PARALLELISM = NUM_TASK_MANAGERS * NUM_TASK_SLOTS;
    +
    +	private static ForkableFlinkMiniCluster cluster;
    +
    +	@BeforeClass
    +	public static void startCluster() {
    +		try {
    +			Configuration config = new Configuration();
    +			config.setInteger(ConfigConstants.LOCAL_INSTANCE_MANAGER_NUMBER_TASK_MANAGER, NUM_TASK_MANAGERS);
    +			config.setInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, NUM_TASK_SLOTS);
    +			config.setString(ConfigConstants.DEFAULT_EXECUTION_RETRY_DELAY_KEY, "0 ms");
    +			config.setInteger(ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY, 12);
    +
    +			cluster = new ForkableFlinkMiniCluster(config, false);
    +		}
    +		catch (Exception e) {
    +			e.printStackTrace();
    +			fail("Failed to start test cluster: " + e.getMessage());
    +		}
    +	}
    +
    +	@AfterClass
    +	public static void shutdownCluster() {
    +		try {
    +			cluster.shutdown();
    +			cluster = null;
    +		}
    +		catch (Exception e) {
    +			e.printStackTrace();
    +			fail("Failed to stop test cluster: " + e.getMessage());
    +		}
    +	}
    +
    +
    +
    +	/**
    +	 * Runs the following program:
    +	 *
    +	 * <pre>
    +	 *     [ (source)->(filter)->(map) ] -> [ (co-map) ] -> [ (map) ] ->
[ (groupBy/reduce)->(sink) ]
    +	 * </pre>
    +	 */
    +	@Test
    +	public void runCheckpointedProgram() {
    +
    +		final long NUM_STRINGS = 10000000L;
    +		assertTrue("Broken test setup", NUM_STRINGS % 40 == 0);
    +
    +		try {
    +			StreamExecutionEnvironment env = StreamExecutionEnvironment.createRemoteEnvironment(
    +					"localhost", cluster.getJobManagerRPCPort());
    +			env.setParallelism(PARALLELISM);
    +			env.enableCheckpointing(500);
    +			env.getConfig().disableSysoutLogging();
    +
    +			DataStream<String> stream = env.addSource(new StringGeneratingSourceFunction(NUM_STRINGS));
    +
    +			stream
    +					// -------------- first vertex, chained to the src ----------------
    +					.filter(new StringRichFilterFunction())
    +
    +					// -------------- second vertex, applying the co-map ----------------
    +					.connect(stream).flatMap(new LeftIdentityCoRichFlatMapFunction())
    +
    +					// -------------- third vertex - the stateful one that also fails ----------------
    +					.map(new StringPrefixCountRichMapFunction())
    +					.startNewChain()
    +					.map(new IdentityMapFunction())
    +
    +							// -------------- fourth vertex - reducer and the sink ----------------
    +					.groupBy("prefix")
    +					.reduce(new OnceFailingReducer(NUM_STRINGS))
    +					.addSink(new RichSinkFunction<PrefixCount>() {
    +
    --- End diff --
    
    This sink is not needed any more.


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

Mime
View raw message