KYLIN-4833 create hfile on hadoop hdfs and distcp to hbase hdfs #1494
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * 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.storage.hbase.steps; | ||
|
|
||
| import com.google.common.collect.Lists; | ||
| import org.apache.commons.cli.Options; | ||
| import org.apache.hadoop.conf.Configuration; | ||
| import org.apache.hadoop.fs.FileSystem; | ||
| import org.apache.hadoop.fs.Path; | ||
| import org.apache.hadoop.mapred.JobContext; | ||
| import org.apache.hadoop.tools.DistCp; | ||
| import org.apache.hadoop.tools.DistCpOptions; | ||
| import org.apache.hadoop.util.ToolRunner; | ||
| import org.apache.kylin.common.KylinConfig; | ||
| import org.apache.kylin.common.util.HadoopUtil; | ||
| import org.apache.kylin.cube.CubeInstance; | ||
| import org.apache.kylin.cube.CubeManager; | ||
| import org.apache.kylin.engine.mr.common.AbstractHadoopJob; | ||
| import org.apache.kylin.engine.mr.common.BatchConstants; | ||
| import org.apache.kylin.storage.hbase.HBaseConnection; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import java.util.List; | ||
|
|
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| /** | ||
| * @author fengpod | ||
| */ | ||
| public class HFileDistcpJob extends AbstractHadoopJob { | ||
|
|
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| protected static final Logger logger = LoggerFactory.getLogger(HFileDistcpJob.class); | ||
|
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| public int run(String[] args) throws Exception { | ||
| Options options = new Options(); | ||
|
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| try { | ||
| options.addOption(OPTION_CUBE_NAME); | ||
| options.addOption(OPTION_JOB_NAME); | ||
| options.addOption(OPTION_INPUT_PATH); | ||
| options.addOption(OPTION_OUTPUT_PATH); | ||
| options.addOption(OPTION_HTABLE_NAME); | ||
| parseOptions(options, args); | ||
|
|
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| // use current hbase configuration | ||
| Configuration configuration = new Configuration(); | ||
| HBaseConnection.addHBaseClusterNNHAConfiguration(configuration); | ||
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| Path input = new Path(getOptionValue(OPTION_INPUT_PATH)); | ||
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| Path output = new Path(getOptionValue(OPTION_OUTPUT_PATH)); | ||
| FileSystem fs = HadoopUtil.getFileSystem(output, configuration); | ||
| if (fs.exists(output) == false) { | ||
| fs.mkdirs(output); | ||
| } | ||
|
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| String cubeName = getOptionValue(OPTION_CUBE_NAME); | ||
| CubeManager cubeMgr = CubeManager.getInstance(KylinConfig.getInstanceFromEnv()); | ||
| CubeInstance cube = cubeMgr.getCube(cubeName); | ||
|
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| List<Path> sourceList = Lists.newArrayList(); | ||
| sourceList.add(input); | ||
| DistCpOptions distCpOptions = new DistCpOptions(sourceList, output); | ||
| distCpOptions.setMapBandwidth(cube.getConfig().getDistCPMapBandWidth()); | ||
| distCpOptions.setMaxMaps(cube.getConfig().getDistCPMaxMapNum()); | ||
| distCpOptions.setOverwrite(true); | ||
| distCpOptions.setBlocking(true); | ||
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| configuration.set(JobContext.JOB_NAME, getOptionValue(OPTION_JOB_NAME)); | ||
| DistCp distCp = new DistCp(configuration, distCpOptions); | ||
|
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| job = distCp.execute(); | ||
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| // set job configuration | ||
| job.getConfiguration().set(BatchConstants.CFG_CUBE_NAME, cubeName); | ||
| // add metadata to distributed cache | ||
| attachCubeMetadata(cube, job.getConfiguration()); | ||
| } catch (Exception e){ | ||
| throw e; | ||
| }finally { | ||
| if (job != null) | ||
| cleanupTempConfFile(job.getConfiguration()); | ||
| } | ||
| return 0; | ||
| } | ||
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| public static void main(String[] args) throws Exception { | ||
| int exitCode = ToolRunner.run(new HFileDistcpJob(), args); | ||
| System.exit(exitCode); | ||
| } | ||
|
|
||
| } | ||
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remove commented code if not needed , will help in code readability going forward.