org.apache.hadoop.mapreduce.jobhistory.TaskStartedEvent Maven / Gradle / Ivy
/**
* 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.mapreduce.jobhistory;
import org.apache.avro.util.Utf8;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.mapreduce.TaskID;
import org.apache.hadoop.mapreduce.TaskType;
/**
* Event to record the start of a task
*
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class TaskStartedEvent implements HistoryEvent {
private TaskStarted datum = new TaskStarted();
/**
* Create an event to record start of a task
* @param id Task Id
* @param startTime Start time of the task
* @param taskType Type of the task
* @param splitLocations Split locations, applicable for map tasks
*/
public TaskStartedEvent(TaskID id, long startTime,
TaskType taskType, String splitLocations) {
datum.taskid = new Utf8(id.toString());
datum.splitLocations = new Utf8(splitLocations);
datum.startTime = startTime;
datum.taskType = new Utf8(taskType.name());
}
TaskStartedEvent() {}
public Object getDatum() { return datum; }
public void setDatum(Object datum) { this.datum = (TaskStarted)datum; }
/** Get the task id */
public TaskID getTaskId() { return TaskID.forName(datum.taskid.toString()); }
/** Get the split locations, applicable for map tasks */
public String getSplitLocations() { return datum.splitLocations.toString(); }
/** Get the start time of the task */
public long getStartTime() { return datum.startTime; }
/** Get the task type */
public TaskType getTaskType() {
return TaskType.valueOf(datum.taskType.toString());
}
/** Get the event type */
public EventType getEventType() {
return EventType.TASK_STARTED;
}
}