com.digitalpebble.behemoth.es.ESIndexerJob.java Source code

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Here is the source code for com.digitalpebble.behemoth.es.ESIndexerJob.java

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package com.digitalpebble.behemoth.es;

/**
 * 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.
 */

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.MapWritable;
import org.apache.hadoop.mapred.FileInputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.SequenceFileInputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.elasticsearch.hadoop.mr.EsOutputFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.digitalpebble.behemoth.BehemothConfiguration;

/**
 * Sends annotated documents to ElasticSearch for indexing
 */

public class ESIndexerJob extends Configured implements Tool {
    private static final Logger LOG = LoggerFactory.getLogger(ESIndexerJob.class);

    public ESIndexerJob() {
    }

    public ESIndexerJob(Configuration conf) {
        super(conf);
    }

    public static void main(String args[]) throws Exception {
        int res = ToolRunner.run(BehemothConfiguration.create(), new ESIndexerJob(), args);
        System.exit(res);
    }

    public int run(String[] args) throws Exception {

        if (args.length != 1) {
            String syntax = "com.digitalpebble.behemoth.ESIndexerJob input";
            System.err.println(syntax);
            return -1;
        }

        Path inputPath = new Path(args[0]);

        JobConf job = new JobConf(getConf());

        job.setJarByClass(this.getClass());

        job.setJobName("Indexing " + inputPath + " into ElasticSearch");

        job.setInputFormat(SequenceFileInputFormat.class);

        job.setMapOutputValueClass(MapWritable.class);

        job.setMapperClass(BehemothToESMapper.class);

        job.setSpeculativeExecution(false); // disable speculative execution
        // when writing to ES

        // job.set("es.resource", "radio/artists"); // index used for storing
        // data
        job.setOutputFormat(EsOutputFormat.class); // use dedicated output
        // format

        FileInputFormat.addInputPath(job, inputPath);

        // no reducer : send straight to elasticsearch at end of mapping
        job.setNumReduceTasks(0);

        try {
            long start = System.currentTimeMillis();
            JobClient.runJob(job);
            long finish = System.currentTimeMillis();
            if (LOG.isInfoEnabled()) {
                LOG.info("ESIndexerJob completed. Timing: " + (finish - start) + " ms");
            }
        } catch (Exception e) {
            LOG.error("Exception while running job", e);
            return -1;
        }
        return 0;
    }
}