org.apache.tez.mapreduce.hadoop.TestConfigTranslationMRToTez.java Source code

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Here is the source code for org.apache.tez.mapreduce.hadoop.TestConfigTranslationMRToTez.java

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/**
 * 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.tez.mapreduce.hadoop;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.mapred.JobConf;
import org.apache.tez.runtime.library.common.ConfigUtils;
import org.junit.Test;

public class TestConfigTranslationMRToTez {

    @Test(timeout = 5000)
    // Tests derived keys - i.e. the actual key is not set, but the value is 
    // derived from a fallback key.
    public void testComplexKeys() {

        JobConf confVertex1 = new JobConf();

        confVertex1.set(MRJobConfig.MAP_OUTPUT_KEY_CLASS, IntWritable.class.getName());

        confVertex1.unset(MRJobConfig.KEY_COMPARATOR);
        confVertex1.unset(MRJobConfig.GROUP_COMPARATOR_CLASS);

        MRHelpers.translateMRConfToTez(confVertex1);

        assertEquals(IntWritable.Comparator.class.getName(),
                ConfigUtils.getIntermediateOutputKeyComparator(confVertex1).getClass().getName());
        assertEquals(IntWritable.Comparator.class.getName(),
                ConfigUtils.getIntermediateInputKeyComparator(confVertex1).getClass().getName());
    }

    @Test(timeout = 5000)
    public void testMRToTezKeyTranslation() {
        JobConf confVertex1 = new JobConf();
        confVertex1.set(MRJobConfig.MAP_OUTPUT_KEY_CLASS, IntWritable.class.getName());
        confVertex1.set(MRJobConfig.MAP_OUTPUT_VALUE_CLASS, LongWritable.class.getName());
        confVertex1.setBoolean(MRJobConfig.MAP_OUTPUT_COMPRESS, true);

        MRHelpers.translateMRConfToTez(confVertex1);

        // Verify translation
        assertEquals(IntWritable.class.getName(), ConfigUtils.getIntermediateOutputKeyClass(confVertex1).getName());
        assertEquals(LongWritable.class.getName(),
                ConfigUtils.getIntermediateOutputValueClass(confVertex1).getName());
        assertEquals(IntWritable.class.getName(), ConfigUtils.getIntermediateInputKeyClass(confVertex1).getName());
        assertEquals(LongWritable.class.getName(),
                ConfigUtils.getIntermediateInputValueClass(confVertex1).getName());
        assertTrue(ConfigUtils.shouldCompressIntermediateOutput(confVertex1));
        assertTrue(ConfigUtils.isIntermediateInputCompressed(confVertex1));
    }
}