| /** |
| * 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.hcatalog.templeton; |
| |
| import java.io.IOException; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.mapred.JobID; |
| import org.apache.hadoop.mapred.JobProfile; |
| import org.apache.hadoop.mapred.JobStatus; |
| import org.apache.hadoop.mapred.JobTracker; |
| import org.apache.hadoop.mapred.TempletonJobTracker; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hcatalog.templeton.tool.JobState; |
| |
| /** |
| * Fetch the status of a given job id in the queue. |
| */ |
| public class StatusDelegator extends TempletonDelegator { |
| private static final Log LOG = LogFactory.getLog(StatusDelegator.class); |
| |
| public StatusDelegator(AppConfig appConf) { |
| super(appConf); |
| } |
| |
| public QueueStatusBean run(String user, String id) |
| throws NotAuthorizedException, BadParam, IOException { |
| UserGroupInformation ugi = UserGroupInformation.createRemoteUser(user); |
| TempletonJobTracker tracker = null; |
| JobState state = null; |
| try { |
| tracker = new TempletonJobTracker(ugi, |
| JobTracker.getAddress(appConf), |
| appConf); |
| JobID jobid = StatusDelegator.StringToJobID(id); |
| if (jobid == null) |
| throw new BadParam("Invalid jobid: " + id); |
| state = new JobState(id, Main.getAppConfigInstance()); |
| return StatusDelegator.makeStatus(tracker, jobid, state); |
| } catch (IllegalStateException e) { |
| throw new BadParam(e.getMessage()); |
| } finally { |
| if (tracker != null) |
| tracker.close(); |
| if (state != null) |
| state.close(); |
| } |
| } |
| |
| public static QueueStatusBean makeStatus(TempletonJobTracker tracker, |
| JobID jobid, |
| String childid, |
| JobState state) |
| throws BadParam, IOException { |
| JobID bestid = jobid; |
| if (childid != null) |
| bestid = StatusDelegator.StringToJobID(childid); |
| |
| JobStatus status = tracker.getJobStatus(bestid); |
| JobProfile profile = tracker.getJobProfile(bestid); |
| |
| if (status == null || profile == null) { |
| if (bestid != jobid) { // Corrupt childid, retry. |
| LOG.error("Corrupt child id " + childid + " for " + jobid); |
| bestid = jobid; |
| status = tracker.getJobStatus(bestid); |
| profile = tracker.getJobProfile(bestid); |
| } |
| } |
| |
| if (status == null || profile == null) // No such job. |
| throw new BadParam("Could not find job " + bestid); |
| |
| return new QueueStatusBean(state, status, profile); |
| } |
| |
| public static QueueStatusBean makeStatus(TempletonJobTracker tracker, |
| JobID jobid, |
| JobState state) |
| throws BadParam, IOException { |
| return makeStatus(tracker, jobid, state.getChildId(), state); |
| } |
| |
| /** |
| * A version of JobID.forName with our app specific error handling. |
| */ |
| public static JobID StringToJobID(String id) |
| throws BadParam { |
| try { |
| return JobID.forName(id); |
| } catch (IllegalArgumentException e) { |
| throw new BadParam(e.getMessage()); |
| } |
| } |
| } |