| /* |
| * 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.beam.runners.dataflow.worker; |
| |
| import static org.apache.beam.sdk.transforms.windowing.PaneInfo.NO_FIRING; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.NoSuchElementException; |
| import org.apache.beam.runners.dataflow.worker.PartitioningShuffleReader.PartitioningShuffleReaderIterator; |
| import org.apache.beam.runners.dataflow.worker.util.common.worker.ExecutorTestUtils; |
| import org.apache.beam.runners.dataflow.worker.util.common.worker.ShuffleEntry; |
| import org.apache.beam.runners.dataflow.worker.util.common.worker.Sink; |
| import org.apache.beam.sdk.coders.BigEndianIntegerCoder; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.KvCoder; |
| import org.apache.beam.sdk.coders.StringUtf8Coder; |
| import org.apache.beam.sdk.options.PipelineOptionsFactory; |
| import org.apache.beam.sdk.transforms.windowing.IntervalWindow; |
| import org.apache.beam.sdk.util.WindowedValue; |
| import org.apache.beam.sdk.values.KV; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists; |
| import org.joda.time.Instant; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for PartitioningShuffleReader. */ |
| @RunWith(JUnit4.class) |
| public class PartitioningShuffleReaderTest { |
| private static final List<WindowedValue<KV<Integer, String>>> NO_KVS = Collections.emptyList(); |
| |
| private static final Instant timestamp = new Instant(123000); |
| private static final IntervalWindow window = new IntervalWindow(timestamp, timestamp.plus(1000)); |
| |
| private static final List<WindowedValue<KV<Integer, String>>> KVS = |
| Arrays.asList( |
| WindowedValue.of(KV.of(1, "in 1a"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(1, "in 1b"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(2, "in 2a"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(2, "in 2b"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(3, "in 3"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(4, "in 4a"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(4, "in 4b"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(4, "in 4c"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(4, "in 4d"), timestamp, Lists.newArrayList(window), NO_FIRING), |
| WindowedValue.of(KV.of(5, "in 5"), timestamp, Lists.newArrayList(window), NO_FIRING)); |
| |
| private void runTestReadFromShuffle(List<WindowedValue<KV<Integer, String>>> expected) |
| throws Exception { |
| Coder<WindowedValue<KV<Integer, String>>> elemCoder = |
| WindowedValue.getFullCoder( |
| KvCoder.of(BigEndianIntegerCoder.of(), StringUtf8Coder.of()), |
| IntervalWindow.getCoder()); |
| |
| BatchModeExecutionContext executionContext = |
| BatchModeExecutionContext.forTesting(PipelineOptionsFactory.create(), "STAGE"); |
| // Write to shuffle with PARTITION_KEYS ShuffleSink. |
| ShuffleSink<KV<Integer, String>> shuffleSink = |
| new ShuffleSink<>( |
| PipelineOptionsFactory.create(), |
| null, |
| ShuffleSink.ShuffleKind.PARTITION_KEYS, |
| elemCoder, |
| executionContext, |
| TestOperationContext.create()); |
| |
| TestShuffleWriter shuffleWriter = new TestShuffleWriter(); |
| |
| List<Long> actualSizes = new ArrayList<>(); |
| try (Sink.SinkWriter<WindowedValue<KV<Integer, String>>> shuffleSinkWriter = |
| shuffleSink.writer(shuffleWriter, "dataset")) { |
| for (WindowedValue<KV<Integer, String>> value : expected) { |
| actualSizes.add(shuffleSinkWriter.add(value)); |
| } |
| } |
| List<ShuffleEntry> records = shuffleWriter.getRecords(); |
| Assert.assertEquals(expected.size(), records.size()); |
| Assert.assertEquals(shuffleWriter.getSizes(), actualSizes); |
| |
| // Read from shuffle with PartitioningShuffleReader. |
| PartitioningShuffleReader<Integer, String> partitioningShuffleReader = |
| new PartitioningShuffleReader<>( |
| PipelineOptionsFactory.create(), |
| null, |
| null, |
| null, |
| elemCoder, |
| executionContext, |
| TestOperationContext.create()); |
| ExecutorTestUtils.TestReaderObserver observer = |
| new ExecutorTestUtils.TestReaderObserver(partitioningShuffleReader); |
| |
| TestShuffleReader shuffleReader = new TestShuffleReader(); |
| List<Integer> expectedSizes = new ArrayList<>(); |
| for (ShuffleEntry record : records) { |
| expectedSizes.add(record.length()); |
| shuffleReader.addEntry(record); |
| } |
| |
| List<WindowedValue<KV<Integer, String>>> actual = new ArrayList<>(); |
| Assert.assertFalse(shuffleReader.isClosed()); |
| try (PartitioningShuffleReaderIterator<Integer, String> iter = |
| partitioningShuffleReader.iterator(shuffleReader)) { |
| for (boolean more = iter.start(); more; more = iter.advance()) { |
| actual.add(iter.getCurrent()); |
| } |
| Assert.assertFalse(iter.advance()); |
| try { |
| iter.getCurrent(); |
| Assert.fail("should have failed"); |
| } catch (NoSuchElementException exn) { |
| // As expected. |
| } |
| } |
| Assert.assertTrue(shuffleReader.isClosed()); |
| |
| Assert.assertEquals(expected, actual); |
| Assert.assertEquals(expectedSizes, observer.getActualSizes()); |
| } |
| |
| @Test |
| public void testReadEmptyShuffleData() throws Exception { |
| runTestReadFromShuffle(NO_KVS); |
| } |
| |
| @Test |
| public void testReadNonEmptyShuffleData() throws Exception { |
| runTestReadFromShuffle(KVS); |
| } |
| } |