/*
* Ivory: A Hadoop toolkit for web-scale information retrieval
*
* 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 ivory.app;
import ivory.core.Constants;
import ivory.core.RetrievalEnvironment;
import ivory.core.preprocess.BuildDictionary;
import ivory.core.preprocess.BuildIntDocVectors;
import ivory.core.preprocess.BuildIntDocVectorsForwardIndex;
import ivory.core.preprocess.BuildTermDocVectors;
import ivory.core.preprocess.BuildTermDocVectorsForwardIndex;
import ivory.core.preprocess.ComputeGlobalTermStatistics;
import ivory.core.tokenize.GalagoTokenizer;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.log4j.Logger;
import cern.colt.Arrays;
import edu.umd.cloud9.collection.clue.ClueWarcDocnoMapping;
import edu.umd.cloud9.collection.clue.ClueWarcDocnoMappingBuilder;
public class PreprocessClueWebEnglish extends Configured implements Tool {
private static final Logger LOG = Logger.getLogger(PreprocessClueWebEnglish.class);
public static int[] SEGMENT_COUNTS = new int[] { 0, 50220423, 51577077, 50547493, 52311060,
50756858, 50559093, 52472358, 49545346, 50738874, 45175228 };
public static int[] DOCNO_OFFSETS = new int[] { 0, 0, 50220423, 101797500, 152344993, 204656053,
255412911, 305972004, 358444362, 407989708, 458728582 };
public static final String SEGMENT = "segment";
/**
* Runs this tool.
*/
@SuppressWarnings({ "static-access" }) @Override
public int run(String[] args) throws Exception {
Options options = new Options();;
options.addOption(OptionBuilder.withArgName("path").hasArg()
.withDescription("(required) collection path").create(PreprocessCollection.COLLECTION_PATH));
options.addOption(OptionBuilder.withArgName("path").hasArg()
.withDescription("(required) index path").create(PreprocessCollection.INDEX_PATH));
options.addOption(OptionBuilder.withArgName("num").hasArg()
.withDescription("(required) segment").create(SEGMENT));
CommandLine cmdline;
CommandLineParser parser = new GnuParser();
try {
cmdline = parser.parse(options, args);
} catch (ParseException exp) {
System.err.println("Error parsing command line: " + exp.getMessage());
return -1;
}
if (!cmdline.hasOption(PreprocessCollection.COLLECTION_PATH) ||
!cmdline.hasOption(PreprocessCollection.INDEX_PATH) ||
!cmdline.hasOption(SEGMENT)) {
System.out.println("args: " + Arrays.toString(args));
HelpFormatter formatter = new HelpFormatter();
formatter.setWidth(120);
formatter.printHelp(this.getClass().getName(), options);
ToolRunner.printGenericCommandUsage(System.out);
return -1;
}
String collection = cmdline.getOptionValue(PreprocessCollection.COLLECTION_PATH);
String indexPath = cmdline.getOptionValue(PreprocessCollection.INDEX_PATH);
int segment = Integer.parseInt(cmdline.getOptionValue(SEGMENT));
LOG.info("Tool name: " + PreprocessClueWebEnglish.class.getSimpleName());
LOG.info(" - collection path: " + collection);
LOG.info(" - index path: " + indexPath);
LOG.info(" - segement: " + segment);
Configuration conf = getConf();
FileSystem fs = FileSystem.get(conf);
// Create the index directory if it doesn't already exist.
Path p = new Path(indexPath);
if (!fs.exists(p)) {
LOG.info("index path doesn't exist, creating...");
fs.mkdirs(p);
} else {
LOG.info("Index directory " + p + " already exists!");
return -1;
}
RetrievalEnvironment env = new RetrievalEnvironment(indexPath, fs);
Path mappingFile = env.getDocnoMappingData();
new ClueWarcDocnoMappingBuilder().build(new Path(collection), mappingFile, conf);
conf.set(Constants.CollectionName, "ClueWeb:English:Segment" + segment);
conf.set(Constants.CollectionPath, collection);
conf.set(Constants.IndexPath, indexPath);
conf.set(Constants.InputFormat, SequenceFileInputFormat.class.getCanonicalName());
conf.set(Constants.Tokenizer, GalagoTokenizer.class.getCanonicalName());
conf.set(Constants.DocnoMappingClass, ClueWarcDocnoMapping.class.getCanonicalName());
conf.set(Constants.DocnoMappingFile, env.getDocnoMappingData().toString());
conf.setInt(Constants.DocnoOffset, DOCNO_OFFSETS[segment]);
conf.setInt(Constants.MinDf, 10);
conf.setInt(Constants.MaxDf, Integer.MAX_VALUE);
new BuildTermDocVectors(conf).run();
new ComputeGlobalTermStatistics(conf).run();
new BuildDictionary(conf).run();
new BuildIntDocVectors(conf).run();
new BuildIntDocVectorsForwardIndex(conf).run();
new BuildTermDocVectorsForwardIndex(conf).run();
return 0;
}
/**
* Dispatches command-line arguments to the tool via the {@code ToolRunner}.
*/
public static void main(String[] args) throws Exception {
ToolRunner.run(new PreprocessClueWebEnglish(), args);
}
}