| /** |
| * 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.crunch; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import com.google.common.collect.Iterables; |
| import org.apache.crunch.impl.mem.MemPipeline; |
| import org.apache.crunch.impl.mr.MRPipeline; |
| import org.apache.crunch.materialize.MaterializableIterable; |
| import org.apache.crunch.test.Person; |
| import org.apache.crunch.test.StringWrapper; |
| import org.apache.crunch.test.TemporaryPath; |
| import org.apache.crunch.test.TemporaryPaths; |
| import org.apache.crunch.types.PTypeFamily; |
| import org.apache.crunch.types.avro.AvroTypeFamily; |
| import org.apache.crunch.types.avro.Avros; |
| import org.apache.crunch.types.writable.WritableTypeFamily; |
| import org.apache.hadoop.conf.Configuration; |
| import org.junit.Assume; |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Lists; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class MaterializeIT { |
| |
| @Rule |
| public TemporaryPath tmpDir = TemporaryPaths.create(); |
| |
| @Test |
| public void testMaterializeInput_Writables() throws IOException { |
| runMaterializeInput(new MRPipeline(MaterializeIT.class, tmpDir.getDefaultConfiguration()), |
| WritableTypeFamily.getInstance()); |
| } |
| |
| @Test |
| public void testMaterializeInput_Avro() throws IOException { |
| runMaterializeInput(new MRPipeline(MaterializeIT.class, tmpDir.getDefaultConfiguration()), |
| AvroTypeFamily.getInstance()); |
| } |
| |
| @Test |
| public void testMaterializeInput_InMemoryWritables() throws IOException { |
| runMaterializeInput(MemPipeline.getInstance(), WritableTypeFamily.getInstance()); |
| } |
| |
| @Test |
| public void testMaterializeInput_InMemoryAvro() throws IOException { |
| runMaterializeInput(MemPipeline.getInstance(), AvroTypeFamily.getInstance()); |
| } |
| |
| @Test |
| public void testMaterializeEmptyIntermediate() throws IOException { |
| runMaterializeEmptyIntermediate( |
| new MRPipeline(MaterializeIT.class, tmpDir.getDefaultConfiguration())); |
| } |
| |
| @Test |
| public void testMaterializeEmptyIntermediate_InMemory() throws IOException { |
| runMaterializeEmptyIntermediate(MemPipeline.getInstance()); |
| } |
| |
| @Test(expected = CrunchRuntimeException.class) |
| public void testMaterializeFailure() throws IOException { |
| runMaterializeWithFailure( |
| new MRPipeline(MaterializeIT.class, tmpDir.getDefaultConfiguration())); |
| } |
| |
| @Test |
| public void testMaterializeNoFailure() throws IOException { |
| Configuration conf = tmpDir.getDefaultConfiguration(); |
| conf.setBoolean("crunch.empty.materialize.on.failure", true); |
| runMaterializeWithFailure(new MRPipeline(MaterializeIT.class, conf)); |
| } |
| |
| public void runMaterializeInput(Pipeline pipeline, PTypeFamily typeFamily) throws IOException { |
| List<String> expectedContent = Lists.newArrayList("b", "c", "a", "e"); |
| String inputPath = tmpDir.copyResourceFileName("set1.txt"); |
| |
| PCollection<String> lines = pipeline.readTextFile(inputPath); |
| assertEquals(expectedContent, Lists.newArrayList(lines.materialize())); |
| pipeline.done(); |
| } |
| |
| public void runMaterializeEmptyIntermediate(Pipeline pipeline) |
| throws IOException { |
| String inputPath = tmpDir.copyResourceFileName("set1.txt"); |
| PCollection<String> empty = pipeline.readTextFile(inputPath).filter(new FilterAll<String>(false)); |
| assertTrue(Iterables.isEmpty(empty.materialize())); |
| pipeline.done(); |
| } |
| |
| public void runMaterializeWithFailure(Pipeline pipeline) throws IOException { |
| String inputPath = tmpDir.copyResourceFileName("set1.txt"); |
| PCollection<String> empty = pipeline.readTextFile(inputPath).filter(new FilterAll<String>(true)); |
| empty.materialize().iterator(); |
| pipeline.done(); |
| } |
| |
| static class FilterAll<T> extends FilterFn<T> { |
| |
| private final boolean throwException; |
| |
| public FilterAll(boolean throwException) { |
| this.throwException = throwException; |
| } |
| |
| @Override |
| public boolean accept(T input) { |
| if (throwException) { |
| throw new RuntimeException("This is an exception"); |
| } |
| return false; |
| } |
| } |
| |
| static class StringToStringWrapperPersonPairMapFn extends MapFn<String, Pair<StringWrapper, Person>> { |
| |
| @Override |
| public Pair<StringWrapper, Person> map(String input) { |
| Person person = new Person(); |
| person.name = input; |
| person.age = 42; |
| person.siblingnames = Lists.<CharSequence> newArrayList(); |
| return Pair.of(new StringWrapper(input), person); |
| } |
| |
| } |
| |
| @Test |
| public void testMaterializeAvroPersonAndReflectsPair_GroupedTable() throws IOException { |
| Assume.assumeTrue(Avros.CAN_COMBINE_SPECIFIC_AND_REFLECT_SCHEMAS); |
| Pipeline pipeline = new MRPipeline(MaterializeIT.class); |
| MaterializableIterable<Pair<StringWrapper, Person>> mi = (MaterializableIterable) pipeline |
| .readTextFile(tmpDir.copyResourceFileName("set1.txt")) |
| .parallelDo(new StringToStringWrapperPersonPairMapFn(), |
| Avros.pairs(Avros.reflects(StringWrapper.class), Avros.records(Person.class))) |
| .materialize(); |
| |
| // We just need to make sure this doesn't crash |
| assertEquals(4, Iterables.size(mi)); |
| assertTrue(mi.getPipelineResult().succeeded()); |
| } |
| } |