org.apache.accumulo.test.randomwalk.shard.SortTool.java Source code

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Here is the source code for org.apache.accumulo.test.randomwalk.shard.SortTool.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.accumulo.test.randomwalk.shard;

import java.util.Collection;

import org.apache.accumulo.core.client.mapreduce.AccumuloFileOutputFormat;
import org.apache.accumulo.core.client.mapreduce.lib.partition.KeyRangePartitioner;
import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Value;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
import org.apache.hadoop.util.Tool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SortTool extends Configured implements Tool {
    protected final Logger log = LoggerFactory.getLogger(this.getClass());
    private String outputDir;
    private String seqFile;
    private String splitFile;
    private Collection<Text> splits;

    public SortTool(String seqFile, String outputDir, String splitFile, Collection<Text> splits) {
        this.outputDir = outputDir;
        this.seqFile = seqFile;
        this.splitFile = splitFile;
        this.splits = splits;
    }

    @Override
    public int run(String[] args) throws Exception {
        Job job = Job.getInstance(getConf(), this.getClass().getSimpleName());
        job.setJarByClass(this.getClass());

        if (job.getJar() == null) {
            log.error("M/R requires a jar file!  Run mvn package.");
            return 1;
        }

        job.setInputFormatClass(SequenceFileInputFormat.class);
        SequenceFileInputFormat.setInputPaths(job, seqFile);

        job.setPartitionerClass(KeyRangePartitioner.class);
        KeyRangePartitioner.setSplitFile(job, splitFile);

        job.setMapOutputKeyClass(Key.class);
        job.setMapOutputValueClass(Value.class);

        job.setNumReduceTasks(splits.size() + 1);

        job.setOutputFormatClass(AccumuloFileOutputFormat.class);
        AccumuloFileOutputFormat.setOutputPath(job, new Path(outputDir));

        job.waitForCompletion(true);
        return job.isSuccessful() ? 0 : 1;
    }
}