| /** |
| * 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.hadoop.mapred; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| /** |
| * This is used to track task completion events on |
| * job tracker. |
| */ |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class TaskCompletionEvent |
| extends org.apache.hadoop.mapreduce.TaskCompletionEvent { |
| @InterfaceAudience.Public |
| @InterfaceStability.Stable |
| static public enum Status {FAILED, KILLED, SUCCEEDED, OBSOLETE, TIPFAILED}; |
| |
| public static final TaskCompletionEvent[] EMPTY_ARRAY = |
| new TaskCompletionEvent[0]; |
| /** |
| * Default constructor for Writable. |
| * |
| */ |
| public TaskCompletionEvent() { |
| super(); |
| } |
| |
| /** |
| * Constructor. eventId should be created externally and incremented |
| * per event for each job. |
| * @param eventId event id, event id should be unique and assigned in |
| * incrementally, starting from 0. |
| * @param taskId task id |
| * @param status task's status |
| * @param taskTrackerHttp task tracker's host:port for http. |
| */ |
| public TaskCompletionEvent(int eventId, |
| TaskAttemptID taskId, |
| int idWithinJob, |
| boolean isMap, |
| Status status, |
| String taskTrackerHttp){ |
| super(eventId, taskId, idWithinJob, isMap, org.apache.hadoop.mapreduce. |
| TaskCompletionEvent.Status.valueOf(status.name()), taskTrackerHttp); |
| } |
| |
| static TaskCompletionEvent downgrade( |
| org.apache.hadoop.mapreduce.TaskCompletionEvent event) { |
| return new TaskCompletionEvent(event.getEventId(), |
| TaskAttemptID.downgrade(event.getTaskAttemptId()),event.idWithinJob(), |
| event.isMapTask(), Status.valueOf(event.getStatus().name()), |
| event.getTaskTrackerHttp()); |
| } |
| /** |
| * Returns task id. |
| * @return task id |
| * @deprecated use {@link #getTaskAttemptId()} instead. |
| */ |
| @Deprecated |
| public String getTaskId() { |
| return getTaskAttemptId().toString(); |
| } |
| |
| /** |
| * Returns task id. |
| * @return task id |
| */ |
| public TaskAttemptID getTaskAttemptId() { |
| return TaskAttemptID.downgrade(super.getTaskAttemptId()); |
| } |
| |
| /** |
| * Returns enum Status.SUCESS or Status.FAILURE. |
| * @return task tracker status |
| */ |
| public Status getTaskStatus() { |
| return Status.valueOf(super.getStatus().name()); |
| } |
| |
| /** |
| * Sets task id. |
| * @param taskId |
| * @deprecated use {@link #setTaskAttemptId(TaskAttemptID)} instead. |
| */ |
| @Deprecated |
| public void setTaskId(String taskId) { |
| this.setTaskAttemptId(TaskAttemptID.forName(taskId)); |
| } |
| |
| /** |
| * Sets task id. |
| * @param taskId |
| */ |
| protected void setTaskAttemptId(TaskAttemptID taskId) { |
| super.setTaskAttemptId(taskId); |
| } |
| |
| /** |
| * Set task status. |
| * @param status |
| */ |
| protected void setTaskStatus(Status status) { |
| super.setTaskStatus(org.apache.hadoop.mapreduce. |
| TaskCompletionEvent.Status.valueOf(status.name())); |
| } |
| |
| /** |
| * Set the task completion time |
| * @param taskCompletionTime time (in millisec) the task took to complete |
| */ |
| protected void setTaskRunTime(int taskCompletionTime) { |
| super.setTaskRunTime(taskCompletionTime); |
| } |
| |
| /** |
| * set event Id. should be assigned incrementally starting from 0. |
| * @param eventId |
| */ |
| protected void setEventId(int eventId) { |
| super.setEventId(eventId); |
| } |
| |
| /** |
| * Set task tracker http location. |
| * @param taskTrackerHttp |
| */ |
| protected void setTaskTrackerHttp(String taskTrackerHttp) { |
| super.setTaskTrackerHttp(taskTrackerHttp); |
| } |
| } |