Java tutorial
/* Copyright 2013 Future TV, Inc. * * 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 tv.icntv.grade.film.grade; import com.google.common.base.Function; import com.google.common.base.Joiner; import com.google.common.base.Splitter; import com.google.common.base.Strings; import com.google.common.collect.Lists; import com.sun.istack.Nullable; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.client.Scan; import org.apache.hadoop.hbase.io.ImmutableBytesWritable; import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil; import org.apache.hadoop.io.LongWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Counter; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob; import org.apache.hadoop.mapreduce.lib.jobcontrol.JobControl; import org.apache.hadoop.util.ToolRunner; import tv.icntv.grade.film.correlate.UserHistoryMapper; import tv.icntv.grade.film.correlate.UserHistoryReducer; import tv.icntv.grade.film.core.AbstractJob; import tv.icntv.grade.film.grade.num.NumCountMapper; import tv.icntv.grade.film.grade.num.NumCountReducer; import tv.icntv.grade.film.grade.time.TimeCombiner; import tv.icntv.grade.film.grade.time.TimeMaper; import tv.icntv.grade.film.grade.time.TimeReducer; import tv.icntv.grade.film.utils.HadoopUtils; import tv.icntv.grade.film.utils.MapReduceUtils; import java.io.IOException; import java.util.Date; import java.util.List; /** * Created with IntelliJ IDEA. * User: xiaowu lei * Date: 13-11-25 * Time: ?1:52 */ @Deprecated public class GradeJob extends AbstractJob { private final String groupName = "icntv_correlate_group"; private final String countName = "icntv_count_name"; @Override public int run(String[] strings) throws Exception { Configuration configuration = this.getConf(); //num job Job numJob = new Job(configuration, "calculate film seed num job "); Path[] paths = getPaths(strings[0].split(",")); MapReduceUtils.initMapperJob(NumCountMapper.class, Text.class, LongWritable.class, this.getClass(), numJob, paths); // TableMapReduceUtil.initTableReducerJob(strings[1], NumCountReducer.class, numJob); ControlledJob controlledJob3 = new ControlledJob(configuration); controlledJob3.setJob(numJob); //time job Job timeJob = new Job(configuration, "calculate film time middle job"); MapReduceUtils.initMapperJob(TimeMaper.class, Text.class, Text.class, this.getClass(), timeJob, paths); timeJob.setCombinerClass(TimeCombiner.class); MapReduceUtils.initReducerJob(new Path(strings[2]), TimeReducer.class, timeJob); ControlledJob controlledJob4 = new ControlledJob(configuration); controlledJob4.setJob(timeJob); // //? Job correlate = new Job(configuration, "icntv correlate job"); MapReduceUtils.initMapperJob(UserHistoryMapper.class, Text.class, Text.class, this.getClass(), correlate, paths); MapReduceUtils.initReducerJob(new Path(strings[3]), UserHistoryReducer.class, correlate); ControlledJob correlateController = new ControlledJob(configuration); correlateController.setJob(correlate); // controlledJob3.getDependentJobs().add() JobControl jobControl = new JobControl("unit grade"); jobControl.addJob(controlledJob3); jobControl.addJob(controlledJob4); // jobControl.addJob(controlledJob5); jobControl.addJob(correlateController); new Thread(jobControl).start(); while (!jobControl.allFinished()) { Thread.sleep(5000); } // Counter counter =correlate.getCounters().findCounter(groupName,countName); // HadoopUtils.save(new Path(configuration.get("icntv.temp.file")),counter.getValue()); return 0; } public static void main(String[] args) throws Exception { final Configuration configuration = HBaseConfiguration.create(); configuration.addResource("grade.xml"); String tables = configuration.get("hbase.cdn.tables"); if (Strings.isNullOrEmpty(tables)) { return; } List<String> list = Lists.newArrayList(Splitter.on(",").split(tables)); List<String> results = Lists.transform(list, new Function<String, String>() { @Override public String apply(@Nullable java.lang.String input) { return String.format(configuration.get("hdfs.directory.base.db"), new Date(), input); } }); String[] arrays = new String[] { Joiner.on(",").join(results), configuration.get("film.see.num.table"), String.format(configuration.get("hdfs.directory.base.score"), new Date()), String.format(configuration.get("icntv.correlate.input"), new Date()) }; int i = ToolRunner.run(configuration, new GradeJob(), arrays); System.exit(i); } }