| /* |
| * 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.kylin.engine.mr.steps; |
| |
| import java.util.Locale; |
| import org.apache.commons.cli.Options; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.kylin.common.KylinConfig; |
| import org.apache.kylin.cube.CubeInstance; |
| import org.apache.kylin.cube.CubeManager; |
| import org.apache.kylin.cube.CubeSegment; |
| import org.apache.kylin.engine.mr.IMROutput2; |
| import org.apache.kylin.engine.mr.MRUtil; |
| import org.apache.kylin.engine.mr.common.BatchConstants; |
| import org.apache.kylin.metadata.model.Segments; |
| |
| public class MergeCuboidJob extends CuboidJob { |
| |
| @Override |
| public int run(String[] args) throws Exception { |
| Options options = new Options(); |
| |
| try { |
| options.addOption(OPTION_JOB_NAME); |
| options.addOption(OPTION_CUBE_NAME); |
| options.addOption(OPTION_SEGMENT_ID); |
| options.addOption(OPTION_INPUT_PATH); |
| options.addOption(OPTION_OUTPUT_PATH); |
| parseOptions(options, args); |
| |
| String input = getOptionValue(OPTION_INPUT_PATH); |
| String output = getOptionValue(OPTION_OUTPUT_PATH); |
| String cubeName = getOptionValue(OPTION_CUBE_NAME).toUpperCase(Locale.ROOT); |
| String segmentID = getOptionValue(OPTION_SEGMENT_ID); |
| |
| CubeManager cubeMgr = CubeManager.getInstance(KylinConfig.getInstanceFromEnv()); |
| CubeInstance cube = cubeMgr.getCube(cubeName); |
| CubeSegment cubeSeg = cube.getSegmentById(segmentID); |
| |
| // start job |
| String jobName = getOptionValue(OPTION_JOB_NAME); |
| logger.info("Starting: " + jobName); |
| job = Job.getInstance(getConf(), jobName); |
| |
| setJobClasspath(job, cube.getConfig()); |
| |
| // add metadata to distributed cache |
| Segments<CubeSegment> allSegs = cube.getMergingSegments(cubeSeg); |
| allSegs.add(cubeSeg); |
| attachSegmentsMetadataWithDict(allSegs, job.getConfiguration()); |
| |
| // Mapper |
| job.setMapperClass(MergeCuboidMapper.class); |
| job.setMapOutputKeyClass(Text.class); |
| job.setMapOutputValueClass(Text.class); |
| |
| // Reducer |
| job.setReducerClass(CuboidReducer.class); |
| job.setOutputKeyClass(Text.class); |
| job.setOutputValueClass(Text.class); |
| |
| //set dfs.replication |
| job.getConfiguration().set("dfs.replication", KylinConfig.getInstanceFromEnv().getCuboidDfsReplication()); |
| |
| // set inputs |
| IMROutput2.IMRMergeOutputFormat outputFormat = MRUtil.getBatchMergeOutputSide2(cubeSeg).getOutputFormat(); |
| outputFormat.configureJobInput(job, input); |
| addInputDirs(input, job); |
| |
| // set output |
| outputFormat.configureJobOutput(job, output, cubeSeg); |
| |
| // set job configuration |
| job.getConfiguration().set(BatchConstants.CFG_CUBE_NAME, cubeName); |
| job.getConfiguration().set(BatchConstants.CFG_CUBE_SEGMENT_ID, segmentID); |
| |
| return waitForCompletion(job); |
| } finally { |
| if (job != null) |
| cleanupTempConfFile(job.getConfiguration()); |
| } |
| } |
| |
| } |