com.google.mr4c.hadoop.mrv1.MRv1TestBinding.java Source code

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Here is the source code for com.google.mr4c.hadoop.mrv1.MRv1TestBinding.java

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/**
  * Copyright 2014 Google Inc. All rights reserved.
  * 
  * Licensed 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 com.google.mr4c.hadoop.mrv1;

import com.google.mr4c.AlgoRunner;
import com.google.mr4c.hadoop.MR4CMRJob;
import com.google.mr4c.hadoop.HadoopAlgoRunner;
import com.google.mr4c.hadoop.HadoopTestBinding;
import com.google.mr4c.hadoop.HadoopTestUtils;
import com.google.mr4c.util.MR4CLogging;

import java.io.IOException;

import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MiniMRCluster;

import org.slf4j.Logger;

public class MRv1TestBinding implements HadoopTestBinding {

    private MiniMRCluster m_mrCluster;

    public synchronized JobConf createTestMRJobConf() throws IOException {
        if (m_mrCluster == null) {
            startMRCluster();
        }
        JobConf job = m_mrCluster.createJobConf();
        job.setJarByClass(AlgoRunner.class);
        return job;
    }

    private void startMRCluster() throws IOException {

        FileSystem fs = HadoopTestUtils.getTestDFS();
        m_mrCluster = new MiniMRCluster(1, // # of task trackers
                fs.getUri().toString(), // name node
                1 // # of directories
        );

    }

    public void runMiniMRJob(String name, MR4CMRJob bbJob) throws IOException {
        JobConf job = createTestMRJobConf();
        bbJob.applyTo(job); // Do this to keep any overrides from being lost (e.g. num tasks)
        MiniMRAlgoRunner runner = new MiniMRAlgoRunner(job, bbJob);
        runner.execute();
    }

    private static class MiniMRAlgoRunner extends HadoopAlgoRunner {

        private static final Logger s_log = MR4CLogging.getLogger(MiniMRAlgoRunner.class);

        MiniMRAlgoRunner(JobConf jobConf, MR4CMRJob bbJob) {
            super(jobConf, bbJob, s_log);
        }

        protected void doBuildJob() throws IOException {
            m_bbJob.setRemote(false);
            m_bbJob.includeEnvironmentVariable("LD_LIBRARY_PATH");
        }

    }

    public synchronized void shutdownMRCluster() {
        if (m_mrCluster != null) {
            m_mrCluster.shutdown();
            m_mrCluster = null;
        }
    }

    public boolean expectedDeprecatedFileSysProp() {
        //return true;
        return false;
    }
}