| /** |
| * 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 java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.io.Writable; |
| |
| /** |
| * A class that represents the communication between the tasktracker and child |
| * tasks w.r.t the map task completion events. It also indicates whether the |
| * child task should reset its events index. |
| */ |
| public class MapTaskCompletionEventsUpdate implements Writable { |
| TaskCompletionEvent[] events; |
| boolean reset; |
| |
| public MapTaskCompletionEventsUpdate() { } |
| |
| public MapTaskCompletionEventsUpdate(TaskCompletionEvent[] events, |
| boolean reset) { |
| this.events = events; |
| this.reset = reset; |
| } |
| |
| public boolean shouldReset() { |
| return reset; |
| } |
| |
| public TaskCompletionEvent[] getMapTaskCompletionEvents() { |
| return events; |
| } |
| |
| public void write(DataOutput out) throws IOException { |
| out.writeBoolean(reset); |
| out.writeInt(events.length); |
| for (TaskCompletionEvent event : events) { |
| event.write(out); |
| } |
| } |
| |
| public void readFields(DataInput in) throws IOException { |
| reset = in.readBoolean(); |
| events = new TaskCompletionEvent[in.readInt()]; |
| for (int i = 0; i < events.length; ++i) { |
| events[i] = new TaskCompletionEvent(); |
| events[i].readFields(in); |
| } |
| } |
| } |