/*
* 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.giraph.hive;
import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;
import org.apache.giraph.io.internal.WrappedVertexOutputFormat;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapred.HackJobContext;
import org.apache.hadoop.mapred.HackTaskAttemptContext;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.TaskAttemptID;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.OutputCommitter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import com.google.common.collect.Maps;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
public class Helpers {
public static InputStream getResource(String name) {
return Helpers.class.getClassLoader().getResourceAsStream(name);
}
public static Map<Integer, Double> parseIntDoubleResults(Iterable<String> results) {
Map<Integer, Double> values = Maps.newHashMap();
for (String line : results) {
String[] tokens = line.split("\\s+");
int id = Integer.valueOf(tokens[0]);
double value = Double.valueOf(tokens[1]);
values.put(id, value);
}
return values;
}
public static Map<Integer, Integer> parseIntIntResults(Iterable<String> results) {
Map<Integer, Integer> values = Maps.newHashMap();
for (String line : results) {
String[] tokens = line.split("\\s+");
int id = Integer.valueOf(tokens[0]);
int value = Integer.valueOf(tokens[1]);
values.put(id, value);
}
return values;
}
public static void commitJob(GiraphConfiguration conf)
throws IOException, InterruptedException {
ImmutableClassesGiraphConfiguration iconf = new ImmutableClassesGiraphConfiguration(conf);
WrappedVertexOutputFormat outputFormat = iconf.createWrappedVertexOutputFormat();
JobConf jobConf = new JobConf(conf);
TaskAttemptContext
taskContext = new HackTaskAttemptContext(jobConf, new TaskAttemptID());
OutputCommitter outputCommitter = outputFormat.getOutputCommitter(
taskContext);
JobContext jobContext = new HackJobContext(jobConf, taskContext.getJobID());
outputCommitter.commitJob(jobContext);
}
public static JobContext makeJobContext(Configuration conf) {
JobConf jobConf = new JobConf(conf);
TaskAttemptContext
taskContext = new HackTaskAttemptContext(jobConf, new TaskAttemptID());
return new HackJobContext(jobConf, taskContext.getJobID());
}
}