| /* |
| * 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 java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.kylin.common.util.HadoopUtil; |
| import org.apache.kylin.engine.mr.JobBuilderSupport; |
| import org.apache.kylin.job.engine.JobEngineConfig; |
| import org.apache.kylin.job.exception.ExecuteException; |
| import org.apache.kylin.job.execution.AbstractExecutable; |
| import org.apache.kylin.job.execution.ExecutableContext; |
| import org.apache.kylin.job.execution.ExecuteResult; |
| import org.apache.kylin.storage.hbase.HBaseConnection; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.collect.Lists; |
| |
| /** |
| * Created by sunyerui on 15/9/17. |
| */ |
| public class HDFSPathGarbageCollectionStep extends AbstractExecutable { |
| |
| private static final Logger logger = LoggerFactory.getLogger(HDFSPathGarbageCollectionStep.class); |
| |
| public static final String TO_DELETE_PATHS = "toDeletePaths"; |
| private StringBuffer output; |
| private JobEngineConfig config; |
| |
| public HDFSPathGarbageCollectionStep() { |
| super(); |
| output = new StringBuffer(); |
| } |
| |
| @Override |
| protected ExecuteResult doWork(ExecutableContext context) throws ExecuteException { |
| try { |
| config = new JobEngineConfig(context.getConfig()); |
| List<String> toDeletePaths = getDeletePaths(); |
| dropHdfsPathOnCluster(toDeletePaths, HadoopUtil.getWorkingFileSystem()); |
| |
| if (StringUtils.isNotEmpty(context.getConfig().getHBaseClusterFs())) { |
| dropHdfsPathOnCluster(toDeletePaths, FileSystem.get(HBaseConnection.getCurrentHBaseConfiguration())); |
| } |
| } catch (IOException e) { |
| logger.error("job:" + getId() + " execute finished with exception", e); |
| output.append("\n").append(e.getLocalizedMessage()); |
| } |
| |
| return new ExecuteResult(ExecuteResult.State.SUCCEED, output.toString()); |
| } |
| |
| private void dropHdfsPathOnCluster(List<String> oldHdfsPaths, FileSystem fileSystem) throws IOException { |
| if (oldHdfsPaths != null && oldHdfsPaths.size() > 0) { |
| logger.debug("Drop HDFS path on FileSystem: " + fileSystem.getUri()); |
| output.append("Drop HDFS path on FileSystem: \"" + fileSystem.getUri() + "\" \n"); |
| for (String path : oldHdfsPaths) { |
| if (path.endsWith("*")) |
| path = path.substring(0, path.length() - 1); |
| |
| Path oldPath = Path.getPathWithoutSchemeAndAuthority(new Path(path)); |
| if (fileSystem.exists(oldPath)) { |
| fileSystem.delete(oldPath, true); |
| logger.debug("HDFS path " + oldPath + " is dropped."); |
| output.append("HDFS path " + oldPath + " is dropped.\n"); |
| } else { |
| logger.debug("HDFS path " + oldPath + " not exists."); |
| output.append("HDFS path " + oldPath + " not exists.\n"); |
| } |
| // If hbase was deployed on another cluster, the job dir is empty and should be dropped, |
| // because of rowkey_stats and hfile dirs are both dropped. |
| if (fileSystem.listStatus(oldPath.getParent()).length == 0) { |
| Path emptyJobPath = new Path(JobBuilderSupport.getJobWorkingDir(config, getJobId())); |
| emptyJobPath = Path.getPathWithoutSchemeAndAuthority(emptyJobPath); |
| if (fileSystem.exists(emptyJobPath)) { |
| fileSystem.delete(emptyJobPath, true); |
| logger.debug("HDFS path " + emptyJobPath + " is empty and dropped."); |
| output.append("HDFS path " + emptyJobPath + " is empty and dropped.\n"); |
| } |
| } |
| } |
| } |
| } |
| |
| public void setDeletePaths(List<String> deletePaths) { |
| setArrayParam(TO_DELETE_PATHS, deletePaths); |
| } |
| |
| public void setJobId(String jobId) { |
| setParam("jobId", jobId); |
| } |
| |
| public List<String> getDeletePaths() { |
| return getArrayParam(TO_DELETE_PATHS); |
| } |
| |
| public String getJobId() { |
| return getParam("jobId"); |
| } |
| |
| private void setArrayParam(String paramKey, List<String> paramValues) { |
| setParam(paramKey, StringUtils.join(paramValues, ",")); |
| } |
| |
| private List<String> getArrayParam(String paramKey) { |
| final String ids = getParam(paramKey); |
| if (ids != null) { |
| final String[] splitted = StringUtils.split(ids, ","); |
| ArrayList<String> result = Lists.newArrayListWithExpectedSize(splitted.length); |
| for (String id : splitted) { |
| result.add(id); |
| } |
| return result; |
| } else { |
| return Collections.emptyList(); |
| } |
| } |
| } |